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7/24/2019 Directory of All Active Sailplane Models in the United States (Soaring, May 1964)
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DIRECTORY
OF
ALL
CTIVE SAILPLANE
MODELS
IN THE
UNITED STATES
INTRODUCTION
Soaring is
done
with sailplanes so
most soaring enthusiasts are inter
ested in these machines as
their
means to experience flight
without
applied
power.
The
Soaring Soci
ety of America is pleased to present
this Directory of All Active Sail
plane
Models in the
United
tates.
t is
not intended
to be
another
The World's Sailplanes
but
rather
an identification and comparison
issue
and handy
reference.
The
ob
ject is to give for each sailplane a
photo, basic specifications and per
formance figures, a little informa
tion
about the
design
and
refer
ences indicating
where more
infor
mation may be found.
It
should be
possible to take this issue to
any
U.S. soaring site
and
identify all
sailplanes being flown there.
The statistics are a combination
of those compiled from F Ns
United States Civil Aircraft Regis
ter, dated June 1, 1963,
and
SSA
records. Active to FAA means
having had a periodic inspection
within the
past
five years. Sail
planes known by
SSA
to
have be
come inactive were deleted and
only those
which are
expected to
fly in 1964
are
included.
Those
un
der
construction are not considered
here but
SSA
would
like to learn
of them for future reference.
Economy
of
presentation was a
primary consideration. Where pos
sible, photoengravings used in pre
vious issues were saved for this
purpose.
Even
so,
it
was necessary
to go considerably over budget
for new photoengravings and to
add
enough pages to include all the
sailplane models.
SCHWEIZER AIRCRAFT CORP
•
This company has
become
the
backbone of American soaring
by
producing Over half of the active
sailplanes in this country. Three
Schweizer brothers are responsible
and head the company, Ernest as
president and
designer
of the
sail
planes, Paul as V-P, and William.
Model designations
are
ex
plained
as follows: for
the
example
of SGU 2-22, the first letter stands
MAY 964
by LLOYD M.
LICHER,
Editor
t
would be
appreciated i
any
errors
or
omissions
noted
would
be
called to
the attention of SSA
so
file information could
be corrected
and rectification
made,
i
appropri
ate. Information on new sailplanes
becoming
active in
the
U.S. in
the
future will be printed in subsequent
issues as it is received.
Finally, collective thanks are ex
tended
to all those
who
responded
to our solicitation of information
for this issue. Their co-operation
made it possible.
THE AVERAGE SAILPLANE
For
purposes of
description
it
will be useful to
define
here the
average sailplane, general char
acteristics
which
apply to most of
the sailplanes, departures from
which
will
be
noted for specific
models if not obvious from the
photo.
The average
sailplane is
single-place, has two-piece, full
cantilever wings (no struts) of ta
pered planform, a conventiona l
empennage
or tail (separate verti
cal and horizontal
surfaces) with
fixed fin and stabilizer, spoilers,
and a fixed wheel aft of a skid for
the undercarriage.
A
TC
will signify
the model has
an Approved Type
Certificate, and EXP.
means
li
censed in the experimental cate
gory.
STATISTICS
There are very close to 760 ac
tive sailplanes in
the
U.S.
at
this
time, plus
an estimated
100 inactive
and another 140 under construc
tion, making a total of 1000. All
the active Schweizer models num
ber
400,
more
than half
of
those
flying. Active Schweizer I-26's
BOX 147. ELMIRA. N. Y 14902
for Schweizer, the second letter is
for type of aircraft
(Glider), the
third
letter is for type of glider
( Utility; S indicates sailplane), the
first digit is for the number of
seats,
and
the last
number
is for
the consecutive design.
Numbered
designs no
longer
active include a
primary glider built in 1930, a num
her of
utility gliders built in the
30's, some
cargo and troop
trans
port gliders huilt during
the
war,
number 175, or 23 of the 750 ac
tive ships. Models
with
10
or
more
flying are as follows:
Schweizer 1-26 .___ 115
Schweizer 2-22
(all
models) 72
L-K . .
..
61
Schweizer 1-23 (all
models)
56
Schweizer TG-3A .41
Ka-6 . ... 37
R
24
Schweizer TG-2 23 -
Schweizer 1-19 22
Ka - 8B . .. . 19
Cherokee II _____________
17
Bowlus Baby 16
Briegleb BG-12 _ .. . 15
Ka-7 .........
_
_ 14
Another 28 models have two or
more copies flying and
there
are
66 one-of-a-kinds.
The
total
num
ber
of
different
models is
then
108.
PRESENTATION
In general,
the
models will
be
presented in the order of
their
quantity,
with some deviations to
keep all those of one manufacturer
or designer
together.
The
order will
be,
approximately, as follows:
Schweizer, Schleicher, other U.S.
models with two or more flying,
all
other
foreign models, flying
wings,
and
other U.S. one-of
a-kinds.
REFERENCES
References where further infor
mation on
a model
may be
found
will
be coded
as follows:
The World's Sailplanes, Vol. I
______________
\VS-I
The
World's Sailplanes, Vol. II
____________ WS-II
oaring magazine
_____
month(s)-year
page .... p.
CHEMUNG
COUNTY AIRPORTJ
and
27, 28,
.30
and 31
are recent
powered airplane designs.
Blocks of
aircraft
registration
numbers have been assigned to
the
company by FAA from time to
time and most
of
the 1-19's, earl
2-22's,
and
early I-23's are
in
91800-91899 range.
Then
followed
the 3800A-3900A range, which in
cludes most of the early I-20's,
some 8600R's, 10300's and 270f'11.'s.
5
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SCHWEIZER SGU 1-7
N23026
SPECIFICATIONS
Span
• 36 H.
Area 133.5sq.H.
Aspect
ratio
9.6
Airfoi l . . . . . . •
NACA
2415
Empty weight
243
lb.
Payload. . . 180 ,lb.
Gross weight. 423
lb.
Wing loading
, 3.2
Ib.lsq.
H.
Structure: metal/fabric,
I-spar,
constant
chord, I-strut-braced wings; metal/fabric
tail, steel-tube/fabric fuselage.
PERFORMANCE
L/D max ..
. .17.5 @ 45 mph
Min. sink 3.5 fps @ 40 mph
6 fps sink
@
50
mph
The 1-7
is
like a scaled-down
2-22 although
it is part of the 2-22's lineage. Two were
built in 1937 but the one pictured is the
only one left . be e a use
the other
one
was
chopped up for iunk by someone
who
didn't
Phofo
y Laurence
Eccles.ton
know what it was
I
Owners
are Chip
and
Pete
Burr
and
Don
Pedigo
who
base
it
at Named
"Pterodactyl"
(Alley Oop riding
one
Tehachapi, Calif. White
with yellow trim.
decorates the rudder). EXP.
Photo by S.
A.
Aldol
Twelve two-place 2-8's were
built
from 1938
'ferred to as TG-2's, remaining in
demand
to
VVW
II and then 45 military versions
on the
used
market.
ATC.
(the army TG-2 and Navy LNS-I)
were
Holds national 2-place
distance
record
of
built.
Sold surplus later,
they
are still re-
309.678 mi. set by Did.- Johnson in 1946.
SCHWEIZER
S S
2-8
TG-2
SPECIFICATIONS
Span 52 H.
Area 214 sq.
H.
Aspect
ratio.
12.6
Airfoil
NACA 4412
Empty weight 450 lb.
Payload
410 lb.
Gross weight
860
lb.
Wing
loading .4.0
Ib.lsq.
ft.
Structure: metal/fabric, I-spar,
I-strut
braced
wings; metal/fabric
tail; steel
tube/fabric fuselage.
PERFORMANCE
L/D
max.
Min. sink
6
fps sink
@
2.7
23
@
42 mph
5 fps @ 40
mph
68
mph
OTHER
No. built . .57
No. still
active.
23
References: WS-I p. 1 84; I 1-38 p. 4, detailed
description; N-D 46, p. 10, record flight
described;
J-A 58, po 25, descri,ption,
specs
SCHWEIZER SGS 2-12
TG-3A
SPECIFICATIONS
Span
54
ft.
Area 237 sq. ft.
Aspect
ratio
12.3
Airfoil
NACA 4416
Empty
weight
.860 lb.
Payload
340 lb.
Gross weight
1200
lb.
Wing loading
5.05 Ib.lsq.
ft.
Structure: wood/fabric
wings
and
tail,
steel
tube/fabric fuselage.
PERFORMANCE
L/D
max.
24
@
52
mph
Min. sink
3
fps @ 45
mph
6
fps
sink
@
72 mph
OTHER
No.
built
114
No. still active
4
References:
WS-I,
p. 185:
M-J 44,
p. 8,
rt -
cle,
specs, 3-view .
Holds
national 2-place
feminie
altitude gain
record of 10,797 ft. set by Betsy
Wood
ward.
Photo by Monte Adkins
Des'igned
as a two-place military
trainer
in
owners may
purchase
copies of
the
military
1942, three XTG-3', were
built
and then the
manuals
(flight
operating,
erection and
nose was
I'engthened
for the TG-3A version.
maintenance, and repair
instructions)
from
They have
been
active in
the
used sailplane
SSA
for
25f/set . Spoilers on top and
bottom
market
after being sold as surplus.
TG-3A
of
wings. ATC.
SOARING
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Photo by de Perine
First flew in 1946. A long-wing version of
the
1-19.
Plan' were offered for
the
new
wings and
canopy
but only one (N2708A,
now owned by
David
Welle, of E lmira, N.Y.)
SCHWEIZER S S 1·21
SPECIFICATIONS
SCHWEIZER SGU 1·19
SPECIFICATIONS
Span
36 ft.
Area .170 sq. ft.
Aspect
ratio 7.9
Airfoil NACA 43012A
Empty
weight. .320 lb.
Payload 230 lb.
Gross weight 550
lb.
Wing
loading 3.25 Ib.lsq. ft.
Structure: wood/fabric,
2-spar, constant
chord,
2-strut-braced
wings;
metal/fabric
tail;
steel-tube/fabric fuselage.
PERFORMANCE
UD max.
16@42mph
Min. sink
.3.5 fp, @ 35
mph
6 fps sink @ 58 mph
OTHER
No. built
.50
No.
still
active
22
References: WS-I, p. 185; S-O 44, p. 10 arti
cle,
'pee
3-view; N-D 52, p. 6, Miss.
State 'ow
drag
version, curve,.
Span
51 ft.
Area .165
'q.
ft.
A,pect ratio
15.75
Airfoil,
NACA 23012,
43012A, 23009
Empty
weight
470 lb.
Payload
..
250
lb.
Gross weight
.720 lb.
Wing loading
4.36
Ib.l
'q .
ft.
Structure:
all-metal,
,ome fabric on tail and
T.E. of wing.
PERFORMANCE
L/D max
7 @ 50
mph
Min. ,ink 2.5
fp,
@
45 mph
6
fps
ink @
75 mph
OTHER
No. built 2
No. still active 2
References: WS-I, p. 178; S-O 46, p. 8 arti
cle, 3-view,
performance;
M-J 48, p. 2
article from AIR TRAILS.
Built in 1947, won
the National,
that
year
flown by Dick Comey,
and
again in 1957
flown by Stan SmHh of Newark, Del., who
still owns N91856. Bob Moore of Richland,
Wash., owns
the
other one,
N91861. in
which he earned his Dia.
badge.
Comey's
300 miles in 1947 wa' a
National
distance
record at the time. No market at $3600
MAY 1964
Photo
by
Robert Lee Moore
First flew in 1944. Produced with open cock
his 1-19; he soared it 190 mi. for
Gold di,t. l
pit but
many owners have
added
canopie,.
Dia.
g,,.I,
fljght de'cription
ref.
7-62, p. 6.
Picture i, Jim Hard of Richl and,
Wa,h.,
in ATC.
in the
U.S.
wa,
modified besides
the factory
prototype
I
N91840, now owned by Gene
Breeden
of
Yineland, N.J.). Some Canadians
price in 1947 so a simpler model, the 1-23,
was produced instead.
Smith's
was modified
to lower the ,eat
and canopy.
fOeatures
SCHWEIZER SGU 1·20
SPECIFICATIONS
Span 43 ft.
Area
182
sq.
ft.
A'pect
ratio
10.15
Airfoil NACA 43012A
Empty weight . .400 lb.
Payload 230 lb.
Gross
weight
630 lb.
Wing
loading
3.5 Ib.l,q. ft.
Structure:
wood/fabric,
2-spar, 2-strut-braced
wing,;
metal/fabric tail; steel-tube/fabric
fuselage.
PERFORMANCE
L/D max
.18.5 @ 42
mph
Min. ,ink 3 fps @ 35 mph
6
fps
sink @
60 mph
OTHER
No. built
2
No. still
active
2
References: WS-I. p.
185; N-D 48, p.
i. ad
vertisement
converted
one,
also (ref. 7-60, p. 12).
One
wa'
flown 138 miles in 1947. EXP.
Photo by Rudy Allemann
triple
spoilers (2 on
top,
I on
bottom of
each wing) and water ballast tanks (266
lb.) in wings. EXP.
7
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The 2-22 was
introduced
in 1945
and
has
since become the most-used two-place
trainer in
America.
It has been developed
through
A, B.
C.
D
and
E models.
the
E
now in production. 51 standards were built
with 450-lb.
empty
weight and 830-lb.
gross.
The A was a redesign for the Air Academy;
nose lengthened. full canopy, 900-lb.
gross,
3 built. The B is
a
standard modified
for
900-lb.
gross.
The C (pictured) was a pro
duction
model
incorporating
A
and
B
changes plus smaller ailerons; 103 built, in
cluding 28 kits. The D is a standard modified
SCHWEIZER
S S
1-23
SPECIFICATIONS
Span
43.83 ft.
Area
149 sq. ft.
Aspect
ratio
.12.88
Airfoil
NACA 43012A, 23009
Empty weight
385 lb.
Payload
.275
lb.
Gross
weight
660 lb.
Wing
loading
4.43 Ib./sq. ft.
Structure:
all-metal.
P(;RFORMANCE
U
max
.27 @ 45 mph
Min. sink
2.3
fps
@ 40 mph
6-fps sink @
8 0 mph
OTHER
No.
built .20
No. ,till active (in U.S.). 14
References: WS-I. p. 178: S-O 48. p. 8. arti
cle, curves, 3-view.
The
standard
1-23 (ATC) introduced in
1948, and its later versions. the H C. D
E
F G
and
H.
has become America's most
numerous performance
sailplane.
A standard,
flown by Bill Ivans. for 10 years held the
wor ld altitude records of 42, 100/30, 00
ft.
-for small ailerons. The E is the latest pro
duction
model with larger spoilers, roomier
cockpit. new
canopy and
wing root change
to
provide for
skylight:
33 built
so far.
in
cluding 4 kits. The number still active in the
U.S. is probably
somewhat
more
than the
72 indicated
but
much
of
the
difference be
tween that and the 190
built represent
units
built
for
the
Air
Force
at
taxpayer expense
as foreign aid'
for
Indonesia. Also.
Cana
dian clubs
have some
and
a few are in
other countries
such
as
Argentina.
Australia
and Sweden. A
TC.
Paul Bikle
owned
a standard. N91877,
and
extended the wing
tips (ref.
J-F 55. p. 14).
Only one
B
N91880 (EXP.), a long.wing
SCHWEIZER
S U
2-22E
SPECIFICATIONS
Span . .43 H
Area
210 sq. ft.
Aspect
ratio
8.61
Airfoil NACA 43012A
Empty weight .470 lb.
Payload .430 lb.
Gross weight 900
lb.
Wing loading
4.8
Ib.lsq.
ft.
Structure:
metal/fabric. I-spar.
constant
chord, I-strut-braced
wings;
m'etal/fabric
tail; steel-tube/fabric
fuselage.
PERFORMANCE
L/D max (solo)
17@47mph
Min. sink
3.5 fps @ 37 mph
6·fps
sink @
58 mph
OTHER
No. built
.190
No. still active (in U.S.)
72
References: WS·I. p. 186;
M-A
46. p. 12.
article. 3-view.
Price: $3695; uncovered. $2895;
kit.
$2950;
dry
kit.
$2795.
standard. was built. and only one C. N91881
(EXP.), a long-wing with heavier skins and
spar.
Photo by
Emil
Lehecka
In
1953 the 1-23D
(ATC)
was introduced. a
production
version
of
an
improved B One
flown by Paul MacCready, Jr
..
won the 1953
Nationals.
and another
was flown 455.5 mi.
by
Joe
Lincoln
to
earn the Barringer
Trophy
or 1960.
One E.
N91893 (EXP.). a
long
wing D with balanced spoiler/dive brakes,
was
built in
1954
and
hold s
the current
world altitude records of 46.267/42.303 ft.,
flown by Paul Bikle. It is now owned by the
Antelope Valley Soaring Club.
One F.
N91897
(EXP.L
was built. a heavy-skin. butt
skin-joint E. now owned by Ted Pfeiffer
of
Ridgewood,
N.Y.
SCHWEIZER SGS 1·23D
SPECIFICATIONS
Span
.50
ft.
Area
160.6
sq.
ft.
Aspect
ratio
15.58
Airfoil ..
NACA
43012A, 23009
Empty weight
,
.465
lb.
Payload 285 lib.
Gross
weight
750 lb.
Wing loading
4.67 Ib.lsq. ft.
Structure: all-metal.
PERFORMANCE
U
max
30
@ 48 mph
Min. sink . .
2 fps @ 36
mph
6-fps sink @ .
,82
mp
OTHER
No. built 12
No. still active (in U.S.)
.10
References: WS-I. p. 178.
S O R I N G
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SCHWEIZER S S 1-23G
SCHWEIZER SGS 1-23H
SPECIFICATIONS
Span
52.8 ft.
Area
. 164 sq. ft.
Aspect
ratio
16.9
Airfoil
NACA
430,12A, 23009
Empty
weight.
479 lb.
Payload
271 lb.
Gross
weight
750 lb.
Wing
loading
.4.56 Ib.lsq.
ft.
Structure:
all-metal.
PERFORMANCE
LID max
31@46mph
Min sink
1.95 fps @
40 mph
b-fps
sink
@
83
mph
OTHER
No. built
8
G's,
7
H',
No. still active
8
G's,
6 H's
References: WS-lI, p. 234.
Price $6495; primed only,
no
instruments or
extras, $6195.
SCHWEIZER S S 1-23H-15
SPECIFICATIONS
Span
49.17 ft.
Area
159.4
sq.
ft.
Aspect ratio
15.12
Airfoil
NACA 43012A,
23009
Empty
weight
.470 lb.
Payload
280 lb.
Gross weight
750 lb.
Wing
loading
4.70 Ib.lsq.
ft.
Structure: a!l-metal.
PERFORMANCE
LID max
29 @ 50
mph
Min. sink
2.2 fps @
37
mph
6-fps sink @
85
mph
OTHER
No.
built
. 15
No. still
active
15
References: WS-II, p, 235.
Price: $6195; primed only, no instruments
or extras, $5895.
Photo
by
Oita
Aldott
The 1-23G IATC) was a 1954
production
model with
the
longer wing of the E and F
make up the current production H (ATC)
and
a larger vertical tail of slightly
different
model. The
H-15
(ATCl is an H with the
shape. Other minor
changes,
including re
wing
tips removed and
is an FA/laSTlY
movable
winq tips and
balanced
dive brakes,
Standard
Class
sailplane.
Photo
by Matt Hoffmann
Pictured here is
the
one
standard 1-23
that
Calif., who have it for sale. However,
has
been flat-topped, N91870, now
owned
Schweizer does
not
encourage such modifi·
by John WiliiamslHelen Dick of San Diego,
cations.
Photo by Nathan Frank
The 1-24 was a spare-time co-operative
owns it.
Mode Gold
dist.lDia.
goal
on first
project
between Schweizer and
Howie
Burr
x-C. It -features a straight-tapered wing with
when he worked for
the company in
1953.
dive brakes. White with Daygl'o vertical tail.
He lives in Glendale,
Calif.,
now and still
EXP.
SCHWEIZER SGS 1-24
N91888
SPECIFICATIONS
Span 55,5 ft.
Area
180
sq.
ft.
Aspect r ~ t
17.10
.6,idoil
.
NACA
430
12A,
23009
Empty
weight 585
lb.
Payload
.200
lb.
Gross weight
785 lb.
Wing loading
.4.35 Ib.lsq. ft.
Structure: all-metal.
PERFORMANCE
LID
max
30@50mph
Min. sink
.2
fps
@
46 mph
6-fps sink @
83 mph
OTHER
Designers
.. Howard
Burr, Ernest Schweizer
References: WS-I, p. 180; S-O 53, p. 20.
SCHWEIZER SGS 2-25
N91892
SPECIFICATIONS
Span.
.
60
ft.
Area
.
231
sq.
ft.
Aspect ratio
.15.88
Airfoil
NACA 430 12A
Empty weight
734
lb.
Payload
386
lb.
Gross weight
1120 lb.
Wing loading
4.85
Ib.lsq.
ft.
Structure:
all-metal.
PERFORMANCE
LI max
(solo) .30
@ 46
mph
Min. sink
(solo)
1.95
fps
@ 34
mph
.
6-fps sink @ (solo) 83 mph
OTHER
References: WS·I, p. 181; M·A 55, p.
2,
article curves specs.
One two-place 2-25 was built in 1954 but
MAY 964
the
market
did
not
warrant producing it in weight 1450 lb.,
increasing
the LID max. to
quantity. Now owned by
George
Arents, Jr.,
32 @
65
mph.
Triple
spoilers (2 on top,
of
Miami, Fla., who has
added
weights to
I on bottom of each wing). Dark
blue
with
make
the
empty weight 1050 Ib, and
gross
silver trim. EXP.
9
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SCHWEIZER SGS 1-26
SPECIFICATIONS
Span .40 ft.
Area . 160 sq.
ft.
Aspect ratio
10
Airfoil NACA 43012A
Empty weight .355
lb.
Payload .220
lb.
Gross
weight
575 lb.
Wing loading
3.59
Ib.lsq.
ft.
Structure' metal/fabric wings and tail, steel
tube/fabric
fuselage.
PERFORMANCE
LID max
23 @ 49 m ph
Min. sink
2.7 fps @ 40 mph
6-fps
sink @
74 mph
OTHER
No. built
252
No.
now
active
(in U.S.)
,173
References: WS-I, p.
180;
M-A
54,
p.
23,
report; S-O
54, p. 30,
article;
M-J 56,
p. b
progress
reporI; N-D 55, p. 22, first
Regatta
story;
M-A
57, p.
2 article on
constructing
a kit; 11-62, article on quick
assembly; 10-63,
,alu'fe to the design,
long
flight stories, Regatta.
Price: $3595;
uncovered,
$2745;
kit,
$2395;
dry $2295.
By
far
the most popular and
numerous
sail
plane in America today
(23%
of
total
active), the
1-26 has. since 1954,
introduced
a
significant
one-design
concept.
Nurtured
by a formal 1-26
Association, the design
pr mises to con tinue
growing
in popularity
and provide
a ,ignificant percentage
of
the
soaring
done
in America. The 1-26 holds
the
hoto
by
David Bowers
national feminine
distance
and goal records
of
273.28
and
96.4
mi., set by
Rose Marie
Licher (ref. 10-63,
p. 6) and Jean
Arnold,
respectively. Wally Scott
flew
one 443.5
mi.
(ref.
10-63, p.
15). The difference between
the
252
produced and the
173 now
active
in
the U.S. is accounted
for by
kits
being
finished by buyers, 1 in Ecuador, 12 in Can
ada, 30 in Indonesia (more
of
that foreign
aid at taxpayer expense), and a few de
stroyed. Schweizer
designates
four models,
the standard as factory completed (22
built), the A as standard kits (114 built),
the
B as
factory
completed with wings all
metal
covered increasing empty
and gross
weights
by 25 lb.
each
(87
built),
and the
C as kit B s (29
built).
ATC.
The
one
odd 1-26, N3883A is pictured
here. for identification purposes,
with its
original
owner, Dave
McNay,
who
had it
flat-topped (ref. N D 58, p. 2, curves, X-C
chart). It
is
now owned by O. DeV.ughn
North of Westminster, Calif. Schweizer does
not encourage such modifications and they
are not recognized by
the
1-26
Association.
SCHWEIZER S S 2·32
SPECIFICATIONS
Span
,57
ft .
Area
. . 180 sq. ft.
Aspect ratio
18.05
Airfoil
NACA 63(3)-618, 43012A
Empty
weight
831 lb.
Payload
509 lb.
Gross
weight
.1340 lb.
Wing loading
7.4 Ib.lsq. ft.
Structure: all-metal.
PERFORMANCE
LID
max
(solo)
33 @ 52 mph
Min. sink (solo) ,2 fps @
46 mph
6-fps sink @ {solo} .89 mph
OTHER
No.
built.
2
No. still
active.
.2
References:
WS-II,
p. 237; 4-62, p. 10, 3
view report
Price: $7995.
The
latest model being produced
by
Schwei features dive
brakes
and an all-moving
hori
zer
is
the 2-1/2-place
2-32, which first flew
zontal tail
with anti-balance
tab.
Kits will be
in 1962. Initial production
rate
will be limo.
made available
at
a later date for about
the first to be delivered in May, 1964. It $5900. ATC.
SOARING
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Only one 1-29 was built in 1958 and it is
still owned
by
Schweizer. It consists
of
a
modified 1-23<7
fuselage and
tail with the
addition of
a constant-chord, laminar-flow
airfoil wing with
balanced dive
brakes.
The
wing ri s are identical
made
from
one
mas-
Photo y Rose
Marie
Licher
ter die
to help insure laminar flow. Flush,
countersunk rivets. Heavy, deep
spar
to re
duce
elastic wing deflections and' minimize
skin
oil-canning. Possibility
for addition
of
tapered
wing
tips bringing L/D max. to 40.
EXP.
SCHWEIZER
SGS
1-29
N3898A
SPECIFICATIONS
Span
.49.2 ft.
Area
153.8
sq.
ft.
Aspect
ratio
15.75
Airfoil
. NACA
63-618
Empty
weight
.495 lb.
Payload
255 lb.
Gross weight
750 lb.
Wing loading
4.87
Ib.lsq.
ft.
Structure: all-metal.
PERFORMANCE
L/ D
max
34 @
52
mph
Min. sink
.2.05
fps
@ 43 mph
6-fps sink
@
86 mph
FLUGZEUGBAU A. SCHLEICHER
U.S. Agent: Rudolph Mozer. 3270 Kernway Ct., Bloomfield Hills. Mich. 48013
SCHLEICHER Ka-6CR
SPECIFICATIONS
Span 49.2 ft.
Area 134
sq. ft.
Aspect ratio .18. '
Airfoil NACA 63-618
Empty weight 420 lb.
Payload 250 lb.
Gross weigH
670
lb.
Wing
loading
5 Ib.lsq.
ft.
Structure:
all-wood with some
fabric on T.E.'s
PERFORMANCE
LID
max
31.5 @ 50 mph
Min. sink
2 fps @ 42 mph
6-fps
sink
@
84 mph
OTHER
Dssigner
Rudolf Kaiser
No.
built
in
Germany
over
500
No. active in the U.S.
29 CR's 8 BR's
References: WS-I,
p.
81.
Standard
Class
introduced
at
the
1958 ·from
Germany
to France to set
the
current
Price:
$4320 F.O.B. Detroit,
Mich.
World' Championships, placing 3rd, but win world
distance
record.
The one Ka-6 in
the
ning
the
OSTIV
Prize for the best Standard U. S.
that
had no wheel has h"d one in
Class design entered. Heinz Huth of Ger stalled, making it a
BR The
CR
has
more
The German
Schleicher
Ka-6 series
has
be
many won in
the Standard
Class at
the
1960 of
the
wing covered with plywood and in
come
world
famous for its accomplishments
and
1963 World Championships flying corporates other minor improvements. Dive
and
good
performance at reasonable
price.
Ka-6's. Then
in 1963 two
Ka-6's
were flown
brakes
and
quick assembly
are ·featured.
First flown
in
1955,
it qualified
for the
544.3
mi. by Karl
Betzler
and
Otto
Schauble ATC.
The Ka-8B was derived
from
the
Ka-6 as
a good
climbing
ability
in
thermals and good
Standard
Class
sailplane
with
dive brakes
handling characteristics. Four
of
the
21
in
but simplified for amateur construction from
the
U.S. were built from kits. ATC.
kits. Emphasis was on rugged
construction,
SCHLEICHER Ka 8B
SPECIFICATIONS
Span
49.2 ft.
Area .153
sq.
ft.
Aspect ratio 15.9
Airfoil Go 533,
16.7/'0
Empty
weight 418 lb.
Payload 265 lb.
Gross weight 683
lb.
Wing loading 4.45
Ib.lsq.
ft.
Structure: wood/fabric
wings
and
tail,
steel
tube/fabric
fuselage.
·PERFORMANCE
L/D max
28 @ 45
mph
Min. sink
2.1 fps @ 37 mph
6-fps sink @
.71
mph
OTHER
Designer
Rudolph I«liser
No.
built in Germany
over 200
No. active in the U.S.
\
References: WS-II, p. 104.
Price: $4050 F.O.B. Detroit, Mich.: 3 types of
kits available, also.
MAY 1964
II
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Phol o
by Ray
Shamblen
The German Schleicher Ka-7 is a popular current
multiplilce
world record for speed
two-place tandem Irainer of good perform around
a 500-km.
triangle,
52.03
mph, set
ance which has dive
brakes.
It
holds
the
in South Africa. A
TC.
SCHLEICHER Ka-7
SPECIFICATIONS
Span
.52.5 ft.
rea ..
. 189
sq. ft.
Aspect
ratio
14.0
Airfoil
Go 533, 10/14%
Empty
weight 010 lb.
Payload
440 lb.
Gross
weight
1050
lb.
Wing loading 5.0
Ib./sq.
ft.
Structure:
wood/fabric
wings and tail, steel
tube/fabric fuselage.
PERFORMANCE
LID
max
20 @
50
mph
Min.
sink
2.3
fps @
42
mph
o-fps
sink @
81 mph
OTHER
Designer
Rudolf Kaiser
No. built in
Germany
over
200
No. active
in
the
U.S.
14
References:
WS-I,
p. 83.
Price: $4700
F.O.B. Detroit, Mich.
OTHER WAR SURPLUS SAILPLANES
LAISTER-KAUFFMANN
LK-l0A
SPECIFICATIONS
Span 50 H
Area
105
sq.
ft.
Aspect ratio
15.1
Airfoil NACA 4418, 4409
Empty weight 475 lb.
Payload
400
lb.
Gross
weight .875 lb.
Wing loading
5.27 Ib'!sq.
ft.
Structure: wood/fabric wing and tail; steel
tube/fabric
fuselage.
PERFORMANCE
L/D max
@ 55
mph
Min. sink
3.2
fps @
45
mph
o-fps
sink
@
.05 mph
OTHER
Designer Jack
Laister
No.
built 150
No.
still
active
.01
References:
WS-II, p. 232; J-F
45,
p.
10,
article. p. 18, 3-view; J-A
48.
p. 10,
arti
cle on flat-topping, curves; J-F 50. p. 9,
article on
flat-top
flight characteristics,
p.
13, 14,
flat-top specs,
3-view
and
curves;
2-00, p. 12, .article
and
photos of
various modifications.
On the right, example of a flat-topped
L-K,
this
one
a
"double-bubble."
The L-K is another
two-place
war surplu;
trainer developed in 1942
as
a civilian de
sign but produced in quantity as TG-4A's
for the military.
The TG-4A's
were
converted
to LK-IOA's
by minor
changes
listed
in the
FAA
spec. sheet.
An STC'd Un;v.
of
III. flat
top
version
is approved
on
the
spec. sheet,
Photo
by Lloyd li e
her
also. The
Flat-top versions have
performance
increased
to
L/D
max.
of
25.5
@ 40 mph,
min. sink of 2.3
fps @
38
mph,
and
o-fps
sink @ b4 mph. A "bunny-nose"
L-K
holds
the National 2-place goal record of 248
mi.,
flown
by
Harold
Hutchinson. ATC.
CORCORAIN TG-1A
CINEMA II
SPECIFICATIONS
Span .40.27
ft.
Area
194.3
sq. ft.
Aspect
ratio
10.7
Airfoil Gottingen 549
Empty weight
500 lb.
Payload
420
lb.
Gross weight 920 lb.
Wing loading
4.7
Ib.!sq.
ft.
Structure:
wood/fabric
wings and tail, steel
tube/fabric
fuselage, I-strut-braced wings.
PERFORMANCE
L/D max
20
Min. sink
.3.2
fps
OTHER
Designer
Stanley
Corcoran
No. built
02
No.
still
active
5
S O R I N G
The
two-place tandem Cinema (II)
was
developed in 1940
from
the
single-place
Cinema 1. Original versions had
small, all
moving tails but the
military TG-I
A's
had
conventional tails.
The few
originals, also
known as
Cinema
B's,
became TG-I C's.
The
Cinemas
were
sold surplus and
a
few
are
still
active. The one
pictured
is
in
Canada
and
that's a photog<apher
standing up
in
the front seat. ATC.
References:
2-38, p. 7,
test
flying Cinema I
(I-place);
S-O 43, p. 3, article, specs, 3
view; 7-00, p. I
I,
article, specs.
12
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Photo
by
Malcolm Gamble
The F-R
is another of the
war-spawned
two
place
trainers. It features side-by-side seat
ing.
Navy
designation
was LNE-I,
sold
n
surplus later. It has
Olympia-type
dive
brakes. It has held
the
world
2-placealtitude
records
of
44,255/34,426
ft. since 1952, flown
by Larry Edgar, and Betsy Woodward se t
number
of
current feminine records in
P-R's, as follows: world altitude, 39,993 ft.;
National
alHtude
gain,
27,994 ft.; and Na
tional
2-place distance
and goal, 170.3 mi.
ATC.
References: M-A 42, p. 2, article, 3-view,
specs;
N-D 45, p. 2, article on LNE-I,
specs.
PRATT·READ
PR-Gl
P·R
SPECIFICATIONS
Span .54.5 ft.
Area
.230
sq.
ft.
Aspect
ratio
12.9
Airfoil GS-4, GSM,
GS-I
Empty weight
770
lb.
Payload .380 lb.
Gross
weight
1150 lb.
Wing loading
5 Ib./sq. ft.
Structure: wood/fabric
wings
and
tail,
wood
aft
fuselage,
steel-tube/fabric forward
fuselage.
PERFORMANCE
L/D
max .. 26
@
52
mph
Min. sink
..
3
fps @
49
mph
6-fps
sink @ 75 mph
OTHER
Designers: M. Gluhareff, P. Leonard, J. Bux-
ton,
R. Stanley, H.
Struck
and R. W.
Gris
wold, II.
No. built .. 75
No.
still active
24
OTHER U.S. DESIGNS IN QUANTITY
SAILPLANE
CORPORATIO'N
OF AMERICA
Box
101,
Adelanto.
Calif.
BRIEGLEB
BG·12A
BRIEGL EB BG·12B
SPECIFICATIONS
Span 50 ft.
Area 141
sq. ft.
Aspect ratio .. 17.7
Airfoil . NACA 4418R,
4406R
Empty weight 500 lb.
Payload 250 lb.
Grossweight 750
lb.
Wing
loading
5.3 Ib./sq.
ft.
Structure: all-w00d.
PERFORMANCE
LID max
34
@
56 mph
Min. sink
2.25
fps @ 47 mph
6-fps sink @
85 mph
OTHER
Designer
William G. Briegleb
No. kits sold
52 A's, 23 B's, IC
No
now active 12 A's, 2 B's, IC
References:
WS-I,
p. 173 (Al; M-J 56, p. 22,
article
on prototype,
curves,
3-view; 4-64,
p. 6,
compar ison tes ting the
B
specs,
photoof
C.
Price:
$4950, custom built; $1900, deluxe kit;
$1675, stanc1ard kit; $850,
"U-build-it";
$125, plans only.
The development of the BG-12 was covered
in
the 4-64 issue, p. 6. A prototype flew
in
1956,
followed
by
the
A model
in
kit
form
with a 15% thick, 3-piece wing. A
2-piece,
Photo by George Uveges
18% thick, lighter wing developed in 1963 is
featured in
the
B kits. Both have flaps on the
center
sect ion for g l ide pa th control. One
C model was built with a
2-piece
wing of
IS-meter spao
with d ive b rakes (no f laps )
to
meet FAI/OSTIV
Standard Class require
ments. The numberof
A's
now active may be
more
than
that
indicated because of recent
completions; Briegleb quotes
28 which no
doubt
includes
some
in
Australia
and
Can
ada.
EXP. (ATC appliedfor).
The BG-6 was introduced in 1939
and
pro
duced
in both
complete
and
kit
form.
It has
no device for g li de p at h control. ATC.
M Y
964
BRIEGLEB BG-6
SPECIFICATIONS
Span
32.25 ft.
Area
I 17
sq.
ft.
Aspect
ratio 8.9
Airfoil
NACA
4412
Empty
weight
235 lb.
Payload
190
lb.
Gro>s
weight
.425 lb.
Wing loading 3.63 Ib./sq. ft.
Structure: 2-strut-braced, 2-spar, constant
chord,
wood/fabric wings; metal/fabric
ta il ; s teel-tu be/fabric
fusel.ge.
PERFORMANCE
LID max 16.5 @ 40 mph
Min. sink
3
fps
@ 35 mph
OTHER
Designer
William G. Briegleb
No.
built
.9 by
factory,
67 kits sold
No. still
active
2
References: WS-I, p. 172; 6-39, p, 10 article,
specs
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BRIEGLEB BG-7
SPECIFICATIONS
Span
40.25 ft.
Area
123
sq. ft.
Aspect
ratio
13.1
Airfoil NACA 4412
Empty weight 250 lb.
Payload 250
lb.
Gross
weight
500
lb.
Wing loading 4.1 Ib.lsq. ft.
Structure: 2-strut·braced, 2.spar,
wood/
fabric wings; metal/fabric tail;
steel
tube/fabric
fcselage.
PERFORMANCE
L/D
max
20
@ 40
mph
Min. sink 2.9
fps @
36
mph
OTHER
Designer
William
G.
Briegleb
No. built
3
by factory,
20 kits
sold
No.
still
active
4
References:
',,",S-I.
p.
172.
The BG-7 was developed in 1940
by
adding
longer,
tapered
wings
to
the BG-6. It holds
two current
National
feminine
records, set
by
Betsy Woodward, 120A5-mi. G&R,
and
23.M-mph 100-km. triangle. EXP.
The Cherokee
II
was introduced
in
1956
by
Stan
Hall specifically for amateur, home
construction from plans.
It has model
air
plane-type "stick-and-gusset" structure.
Stan
sold 250
sets of
plane before taldng them off
the market. He
indicates
that there may be
Photo
by
Wenatchee Daily World
up to
38 flying now, including 6 in
Canada,
4
in
Austr"lia
and
I
in
New Zealand. EXP.
R2ference5:
WS-I, p. 190; M-A
56, p.
18,
article, specs,
3-view, N-D 56, p. 6, test
pilot
report; 6-63,
p.
20, photo of un
covered structure
HALL CHEROKEE
II
SPECIFICATIONS
Span
40 ft.
Area
125
sq.
ft.
Aspect ratio
12.8
Airfoil
. Gottingen 549
Empty weight
340 lb.
Payload
190 lb.
Gross
weight 530 lb.
Wing
loading
4.23 Ib.lsq. ft.
Structure: wood/fabric; 2-spar
wing.
PERFORMANCE
LID
max
Min. sink
6-fps
sink
@
23
@ 46 mph
2.7
fps
@
42 mph
67
mph
OTHER
Designer
No. siill "ctive
Stanley
Hall
17
BOWLUS B BY ALBATROSS
BA-100
SPECIFICATIONS
Span 44.5 ft.
Area 150 sq. ft.
Aspect
ratio
13.2
Airfoil Gottingen 535 (mod.j
Empty weight .300 lb.
Payload
.205 lb.
Gross
weig ht 505 lb.
Wing loading
3.3 Ib.lsq. ft.
Structure: ' ·strut-braced wood/fabric w i ~ s
wood/fabric
all-moving tail
surfaces;
metal tail boom; wood
pod.
PERFORMANC'E
L/D
maX 20
Min. sink 2.25 fps
OTHER
Designer
. Hawley Bowlus
No. built
.
over
100 kits sold:
No.
still
active .16
References: 4-38, p. 7, article, 3-view; 3-60,
p. 18, article, specs.
The Bowlus
"Baby"
was introd'uced
in
1938
as
an inexpensive
($750 complete, $385
kitl
production design. Kits only
were
produced
by
Bowlus.
I n
1944,
Laister-Kauffmann
bought the rights and ATC but never were
able
to produce
it
as
an all-metal
kit as
planned
before
going
out of
business.
No
spoilers provided for
but
some
were modi
fied by owners
to
add them.
Photo y Pete Bowers
This
one-of-a-kind
auxiliary-powered sailplane
was designed and built
by
Walter Haufe of back when not
running
to close the cowling
Neenah, Wis.,
in 1963.
t
has a
40-HP Nelson
and
reduce
prop drag. Cowl oan be opened
engine
on the
nose that
rotates
80 degrees
for more
drag. Red and
silver. EXP.
HAUFE
ORIGINAL
N1051Z
SPECIFICATIONS
Span
.41
ft.
Area
176
sq. ft.
Aspect ratio
Airfoil
NACA 4415, MI2
Empty weight
476 lb.
Payload
200 lb.
Gross weight
676 lb.
Wing
loading
3.8 Ib.lsq.
ft.
Structure:
wood/fabric
wing and tail, steel
tube/fabric fuselage.
t
PERFORMANCE
LID
max
20 @ 35 mph
Min. sink
3 fps
@
35 mph
SO R ING
9
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BOWLUS SUPER ALBA1'ROSS
SPECIFICATIONS
Span
_.
44 ft.
Area
123 <q.
ft.
A<pect ratio
15.7
Airfoil
Go 349
Empty weight 435 lb.
Pa00ad 210 lb.
Gro"
weight 645
lb.
Wing loading 5.25 Ib.hq. ft.
Structure: wood/fabric
wing< and
tail, wood
pod,
metal
tail
boom.
PERFORMANCE
L/D max
29 @ 47 mph
OTHER
De<igner Hawley Bowlu<
No.
built
2
No.
<till
active
2
Reference" M·A
43, p. 3,
article, photo.
Two
Bowlu<
Super
Albatro"e< were built,
N21739
by Hawley Bowlu<, now owned by
Art Milam of Hou<ton, Texa<, and
N33658
Photo by S
A
AldoH
by
Fra k Kel<ey, now owned
by
Herman
all-moving tail
but Stiglmeier'< has a fixed
Stiglme er
of Inglewood,
Calif.
tthi<
one
<tabilizer,
a<
well
a<
<ome f1ap<
that were
is
"ava
lable"). Milam's
wa<
built
with an
added to <upplement
the
<poilers.
EXP.
The
Dragonfly
was
the
first
auxiliary.powered
glider
to be
produced
in
the
U.S. A
develop
ment of
the Ba
by
Albatross
in 1945, the first
version
was called
the
Bumblebee. It features
2-place, side-by-side seating, retractable tri-
NELSON HUMMINGBIRD
PG-185B
SPECIFICATIONS
Span
54
ft.
Area
185
sq. ft.
Aspect ratio
15.76
Airfoil Gottingen 549, 676
Empty weight
800
lb.
Payload
350
lb.
Gross weight
.1150 lb.
Wing loading
6 Ib./sq. ft.
Structul'e: metal, some
labric
on
T.E.'s.
PERFORMANCE
LID
max
.25
@ 55
mph
Min. sink 3
fps @
52
mph
6-fps
sink @
80
mph
OTHER
Designer
.
Harry
Perl
No. built
7
No.
still
active
7
References: WS-I, p. 188; M-J 50, p. 3,
article, specs;
N-D
51, p. 2 article
on
flying;
M·J 55, p. 2,
article I
Pt.
I), specs,
3-view;
J .A
55, p. 25,
article
(Pt.
2);
J-F
56,
p.
7 article
on
flying X-C.
MAY
964
cycle landing gear and' a Nel<on engine. It
has no
devices for glide
path
control. Some
of them have
had
the
engines removed,
con·
verting
them to pure sailplanes. ATC as
auxiliary-powered glider.
NELSON
DRAGONFLY
BB 1
SPECIFICATIONS
Span 47.3
ft.
Area 169.3
sq. ft.
Aspect
ratio . . . . . . . . . . . . 13.2
Airfoil
NACA
4415, 4412
Empty
weight 585
lb.
Payload 355 lib.
Gross weight 940 lb.
Wing loading 5.5 Ib./sq. ft.
Structure: I-strut-braced
wood/fabric
wing<;
wood/fabric tail;
metal
tail
boom;
wood
pod.
PERFORMANCE
L/D
max
18
@
50 mph
Min. <ink 4 fp< @ 47 mph
OTHER
Designer Hawley
Bowlus
No.
built
7
No. still
active
.4
References:
J-F
46,
p. 17, article
on Bumble
bee; M-J 49, p. 2, article on flying.
Ted
Nel<on'<
company developed the
Hum
mingbird
in 1953
after discontinuing the
Dragonfly.
It is a two-place tandem,
high
performance, auxiliary-powered <ail
plane.
The 42-HP Nel<on engine retracts when not
in use,
a< shown
in
the
photo.
Undercarriage
is two wheels
in
tandem, front one steerable
with rudder
pedals. It
feature<
an all-moving
horizontal tail with
anti-balance tab, spoilers
and dive brakes,
and styrofoam-filled
leading
edges. Harry Perl has the
wooden
prototype
and there were six all-metal ones produced
in 1955. A new Nelson Aircraft Co., 1560
Electric
Ave., East Pittsburgh,
Pa. 15112, has
purchased
the manufaduring
and <ales
rights
to ihe Hummingbird and
Nelson H-63 en
gine and plans 10 type certificate and
produce the design. EXP.
5
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The prototype Sisu I first flew in 1958 and
featured full-monocoque wing
structure and
camber-changing flaps. Niemi
started
to
produce the IA in Texas, with a lighter wing
structure,
vented dive brakes and sloHed
flaps, then sold out to Astro Corp. and
ioined
them to supervise prod'uction. John
Ryan of Scott.dale, Ariz., has the prototype,
N7983A,
and won the 1962
National
Cham-
Photo by S A.
Aldott
(All
rights reserved)
pionship with it. AI Parker of Odessa, Tex.,
has a IA and flew it 487.24 mi. to set
the
current world
goal
record.
The Sisu is proba
bly
the
highest performance
production
sail
plane
in the
world. It
features a vee tail,
retract.l.le wheel
and
tow
hook. Four lA's
have been delivered and three more have
been completed. EXP. (A TC
pending).
ARLINGTON AIRCRAFT
Div. Astro Corp.
ox
1236,
Greenville.
S.C.
SISU-1A
SPECIFICATIONS
Span
5 \
ft.
Area
. 108 sq.
ft.
Aspect ratio
.23
Airfoil
NACA
65
(3)-418
Empty
weight
480
lb.
Payload
275 lb.
Gross weight
755
lb.
Wing loading
7 Ib./sq. ft.
Structure: all-metal.
PERFORMANCE
LI max
40
@
65 mph
Min. sink 2 1 fps
@
55 mph
6-fps sink @
.95
mph
OTHER
Designer Leonard Niemi
No. built 8
No.
still active .8
Reference,; WS-II,
p. 224
(model 'I);
M-A
56, p. 8, article,
curves,
3-view; 2-61, p. 4,
article; 3·61, p. 3, flight test; 6-63, p. 6.
story
of
Dick
Johnson's
441-mi. flight
in
Argentina; ,12-63, a
Sisu issue, photos,
pilot
report, record flight story.
Price: to be determined but over
$10,000.
AIRMATE HP-S
N34Y
SPECIFICATIONS
Span 51.4 ft.
Area
110
sq.
ft.
Aspect
ratio 24
Airfoil NACA 65
(3)-618
Empty
weight 618 lb.
Payload 232 lb.
Gross weiqht 850 lb.
Wing loading
7.3 Ib.lsq. ft.
Structure:
all-metal.
PERFORMANCE
LI max
37
@
67 mph
Min. sink 2.2 fps @ 57 mph
6-fps sink @
103 mph
OTHER
Designer Richard
Schreder
References:
WS-II, p.
222;
10-59, p. 5,
flight
tests curves.
HELISOAR AIRCRAFT, INC.
ox 603, Danbury, Conn.
HP·10
SPECIFICATIONS
Span .48 ft.
Area 114 sq. ft.
Aspect
ratio
20.2
Airfoil NACA
65
(3)-618
mod.
Empty
weight
535
lb.
Payload
. . 245 lb.
Gross
weig
ht
780
lb.
Wing loading
. .5.9 Ib./sq. ft.
Structure:
all-metal; wing
skins are ~ u m n u m
honeycomb panels.
Dick Schreder designed and built the HP-8
in 1958 and won the Nationals with it that
year
and
again in 1960. He set world
rec
ords
with it
for
all
three speed categories
in
1959,
two
of
which were raised
again by
the
OTHER
Designer Richard'
Schreder,
modified by
Steve duPont.
No. buill
3, plus
13
kits
No. still active
.3
References:
2-6 I, p . 14, article. specs, curves,
3-view.
Price: kit,
$3795
.
The
HP-IO
was developed by Dick
Schreder
who built a prototype and did very well
Photo by Fred Hefty
HP-8
flown by its present
owner, George
Moffat, Jr., of New Brunswick, N.J. (ref.
10-62, p. 10). It features a vee tail, flaps
and retractable
wheel.
All
white.
One-of-a
kind. EXP.
Alton, III. built a
copy,
N25D and has
it for
sa·le now. Helisoar bought the production
rights and is manufacturing kits.
One
has
been
finished.
N319Y, and it is expected
that kit
buyers
will finish another 3
by May,
1964. The constant-chord. aluminum-honey
comb
wing is unique and
the
design
features
34-ft.
span flaps and a vee tail. Wing
tip
extensions are planned
which
will
bring the
span to 50.3
ft.
EXP. (ATC pending).
S O R I N G
with it
in the
1961 Nationals, winning
the
Stroukoff
Trophy for a
35.S-mph
142-mi.
G R.
It
is now owned
by
Bill
Holbrook
of
Cumberland, Md., N6511 D
Joe
Emons of
PERFORMANCE
. 35
@
60 mph
.2.2 fps
@
43 mph (est.)
90
mph (est.)
LI max
Min. sink
6-fps sink
@
16
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AIRMATE HP-9
N6505D
SPECIFICATIONS
Span ,48.84 ft.
Area
127.4 sq. ft.
A'pect
ratio , ,
18.1>
Airfoil
,Wortmann FX-191
Empty weight
1>50
lb.
I'ayload
.. 195 lb.
Gross weight
845 lb.
Wing
loading
1>.1>
Ib'/sq.
ft.
Structure: ali-metal.
PERFORMANCE
L/D
max 40 @ 1>2.5 mph
Min. Sink I
no
flap) . .2.21> fps
@
1>0
mph
I>-fps sink
@ 92.5 mph
The one-of-a-kind HP-9 was designed by
Did
Schreder to fly in
the
1 91>0
Internationals
but
it
wa' not completed in
time.
The
present
owner, Bob Litle, Jr., of Ft.
Benning,
Ga.,
Photo by
R. F.
Litle, Jr.
bought it and
'had
it completed in
191>2 by
crease the area to 143.7
' q .
ft. and
reduce
Dave Blanton's Javelin Aircraft Co. It ha, the sink to 2.11 fps @ 47 mph, dive
brakes
an all-moving
tail, Fowler
flaps
which
in-
and
a retractable whee' . Blue
and white.
EXP.
BRYAN AIRCRAFT,
INC.
Bryan hio
AIRMATE HP-ll
N851Z
SPECIFICATIONS
Span
. , , ,
,52
ft.
Area ,104 sq. ft.
Aspect ratio
.21>
Airfoil NACA 1>5 (3)-1>18
Empty
weight
384 lb.
Payload
21 I
lb.
Gross weig ht
.1>00 lb.
Wing loading
5.77
Ib./sq.
ft.
Structure: ali-meta. .
PERFORMANCE
LI D max
37 @ 55 mph
Min.
sink
. ,1 .54
fps
OTHER
Designer
Richard
Schreder
No. built , I
No.
still active
. . . •
I
References: 4-1>2,
p.
1>
article,
specs,
3
view; 2-04, p.
4, article on
selling plans
and 'kits.
Price:
kit wit,h completed
spars, $3500;
kit,
$2795; plans, $150.
Photo by Fred Hefty
Still dreaming
of
the perfect
sailplane,
He later
placed
3rd with it in
the
191>3
lease, are
being
offered,
as
are
parts nd
Schreder turned
out
the HP-II in
191>2 in
World
Champion,hips, including
a 382-mi. kits.
Anum
ber of these have
been
sold and
time for
the
Nationals, in which he placed flight. Plans for an improved version,
the
some
of them should be
completed
by this
3rd and made the
longe,t
flight, 41>9 mi.
HP-II
A, with retractable wheel and tow re- summer. EXP.
MrTCHELL NIMBUS
III
SPECIFICATIONS
Span 41> ft
Area 117 sq. ft.
Aspect ratio 18
Airfoil
Gottingen
549
Empty
weight 450
lb.
Payload ..
200
lb .
Gross weight
. . 1>50 lb.
Wing
loading 5.1> Ib./sq.
ft
Structure: all.wood,
some
fabric on T.E.'s
FERFOItMANCE
LI max
32 @
1>0
mph
Min. sink
2.5
fp,
@
45.8
mph
I>-fps sink
@ 88
mph
OTHER
Designer
Don
Mitchell
No.
built 4,
plus
5 under construction
No. still active , .4
References: M-J 51>, p. 17, article.
MAY
1964
Don Mitchell
developed
the Nimbus III in
r
951>
from earlier I and II
models. He
produced
nine
kits, of which four have
been
completed,
as follows: N81 71 H, owned
by
tho
Sacramento
(Calif.) Soaring Club;
N63494,
a B model
by
Ed Blalock of Reno,
Photo by S. A. Aldott
Nev.;
N7793B by
Jim Sand, of Houston, Tex.
tpictured): and
N7804C, owned by
Enno
Pechnik of Fairfield, Calif. The last ones
started have a
laminar
FX-05-191 airfoil.
All-moving tail,
3-piece wing.
EXP.
17
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Photo
by
Lloyd Licher
One Prlle 160 was built by Irv
Prue
in 1945
and is now owned by K Gutowski of San
Diego, CaM. It
features
a vee tail,
mag
nesium skins ribs and spar webs external
airfoil
Raps,
and the forward fuselage is
made from a P-38
drop
tank. White. EXP.
PRUE 215
SPECIFICATIONS
Span
40
ft.
Area
90 sq. ft.
Aspect ratio
20
Airfoil NACA
23012,8318
Empty
weight
340 lb.
Payload 200 lb.
Gross weight .
540
lb.
Wind loading
6 Ib./sq. ft.
Structure:
ail-metal.
PERFORMANCE
t iD
max
28.6
@ 52 mph
Min. sink 2.6 fps @ 40 mph
6-fp,
@ .
.75
mph
OTHER
Designer
Irving Prue
No. built
3
No. still active
2
References: N-D
48, p. 8, article, 3-view.
OTHER
Designer Irving Prue
References: M-J
47, p. 14, article, specs; J-A
48,
p. 7,
article
on
Raps;
N-D <8, p. 8,
article.
PRUE 160
N90614
SPECIFICATIONS
Span
40
ft.
Area
. .
80 sq
ft
Aspect
ratio
20
Airfoil
NACA 0018 to 0009
Empty weight
..
160 lb.
Payload
200 lb.
Gross weight
360 lb.
Wing loading
4.5
lb./sq.
ft.
Structure: dll-metal.
PERFORMANCE
LI md
26 @ 52 mph
Min.
sink
2.8 fps
@
40 mph
6-fps sink
@
72 mph
Prue
developed
the 215 in 1949. The one
pictured, N90612, is now
owned by
Ma.
Dreher
of
Santa
Monica, Calif., who
is
experimenting
with mounting a
iet engine
on it. Harold Hutchinson flew it to 2nd
place in
the
1958 Nationals. The
other
215,
N454Y,
an
A model,
is
owned by Col.
H.
Godman
of Holloman AFB, N.M., and is for
sale. The d9Sign features a vee tail
and
re
tractable wheel.
External airfoil flaps were
originally
installed for
glide path
control.
EXP.
Photo by Paul
Heasley
OTHER
he Prue Two
is
a
large, two-place,
high
performance sailplane
now owned
by
Ed
Butts of Twin Falls, Idaho. It first flew in
1959. It features
a retractable
wheel and
large
dive brakes. Two more Two s
are near
ing completion
in the Palmdale, Calif., area.
White
wings
and cocoa fuselage. EXP.
Designer . -Irving
Prue
No. built I plus 2 under construction
No. still
active
.. 1
References: WS-II,
p.
220;
M-A 59, p. 12,
pho'o. specs.
PRUE TWO
N7905C
SPECIFICATIONS
Span 64.5
ft.
Area
228 sq.
ft.
Aspect ratio 18.3
Airfoil
NACA 6]
(3)-618,
a= t
Empty
weight .1090
lb.
Payload
510
lb.
Gross weight
1600 lb.
Wing
loading
5.7·7.0 Ib./sq. ft.
Structure: all-metal:
]-piece
wing; fiberglass
nose :ddn.
PERFORMANCE
LI max
]6
@
58
mph
Min. sink 2.18 fps @ 46 mph
6.fps sink
@
100
mph
PRUE STANDARD
SFECIFICATIONS
Span
49.2 ft.
Area
I 2
1.5 sq.
ft
Aspect ratio
. . . 19.96
Airfoil
.
NACA
63
[3}-618, a=1
Empty
weight .446
lb.
Payload
279
lb.
Gross
weight
. . .
725
lb.
Wing loading
.5-6 Ib./sq.
ft.
Structure: ail-metal,
I-beam for spar.
PERFORMANCE
VD ma. 35
@
56
mph
Min. sink
.2.15
fps @ 44
mph
OTHER
Designer
. .
Irving
Prue
No. built
3
No. still
active
. . 3
References:
7-61, p. 6,
photo, specs;
9-63,
p.
5, description of
557-mi.
Right.
18
Photo y en Jansson
Prue built the fi"t
Standard,
N9726Z in
1961 as an f AI/OSTIV Standard Class sail·
plane.
It is now
owned
by Bud
Mears
of
Redondo
Beach,
Calif.,
who
has extended the
tails,
as evident in the photo. It
has
balanced
dive brakes
on
the lower
wing
surface only.
Paul Bikle of Lancaster, Calif" got
2 ,
N9730Z, which
had a deeper
and
I onger
fuselage and
brakes on
top and bottom.
With
it
he
made
the longest Right ever
made in a sailplane, 557 mi. Bob
Gravance
of Palmdale, Calif., constructed the third
StanClard,
N9728Z.
His brakes
are
on the
bot tom only,
mounted externally, but
his
fuselage is the same as Bikle s.
Work
toward
an
ATC
Vias discontinued in favor of devel
oping
the
Super
Sta'ndard.
Vee tail, no skid.
EXP.
SOARING
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PRUE SUPER STANDARD
SPECIFICATIONS
Span
49.2 ft.
Area
121.5
sq.
ft.
Aspect ratio
.19.96
Airfoil NACA 65 (3)-518, a=.7
Empty w"ight
44b lb.
Payload
.. 279 lb.
Gross weight 725 lb.
Wing
I oading .5 b lb. sq.
ft.
Structure: all-metal.
PERFORMANCE
L/D
max
35 @
5b
mph
Min. sink 2.15 fps
@
44 mpn
OTHER
Designer Irving Prue
No. built plus 4
under
construction
No. still activ. I
References: 4-63. p. 21.
photo
of dive brakes
on trailing
edge
of wing.
The D-8 was
designed
by Ken
Coward
{of
Wee
Bee. Honey Bee
and
Queen Bee fame}
for
simple
home construction
from plans.
The
first one completed. N5053K, is shown here.
the work of Klaus Hill and associates of
Coalville. Utah. It
features
a
one-piece
wing.
No spoilers. EXP.
FRANKLIN ,PS·2
SPECIFICATIONS
Span
3b
ft.
Area 180 sq. ft.
Aspect
ratio
..
7.2
Empty weight 220 lb.
Payload 180 lb.
Gross
weight 400 lb.
Wing
loading 2.2 Ib./sq. ft.
Structure:
constant chord.
2-spar.
2-strut
braced wood/fabric wings; metal/fabric
tail;
deel-tube/fabric
fuselage.
PERFORMANCE
L/D max
15
Min. sink 2.5 fps
OTHER
Designer R. E. Franklin
No.
still actiH
.4
References: 7-37 p.
b
photo, specs; "Sport
Aviation." 10-61. p. 16. II-bl. p. 29;
"American Airman," 11-61, p. 17.
Photo by Ben Jansson
Developed from
the Standard in 1962.
the
Super Standard went to a
conventional
tail
(to help reduce induced
drag
in circling
flight). 2-seetion canopy, shallower fuse lage,
trailing
edge
dive
brakes, and
a
different
laminar airfoil. The
prototype,
N7773C, has
lhick magnesium wing skins
and
fewer ribs
but subsequent versions are
reverting to
aluminum. Four
more
are being produced
while ATC work is being completed. Further
production
plans are indeterminate.
FAII
OSTIV Standard
Class. No
skid.
EXP.
OTHER
Designer
Ken Coward
No. built
I
No. still
active
1
References:
Interavia.
8 b2.
p. 980.
P rice: plans .
$29.95.
PACIFIC
AIRCRAFT CO.
5942
Avenida
Chamnez:
a Jolla Calif
0-8
SPECIFICATIONS
Span
31.b It.
Area
100
sq.
ft.
Aspect ratio
10
Airfoil
4418
(mod.)
Empty weight
270 lb.
Payload
190
lb.
Gross weight
bO lb.
Wing
loading
.4.b
Ib./sq. ft.
Structure:
all-metal.
PERFORMANCE
LID max
21.5
@ bO
mph
Min. sink
3.5 fps
@
45 mph
b-fps sink
@
77 mph
pictured is awned by Wallace
Muschinske
of Merrill, Wis. No
spoilers.
EXP.
The Franklin was 'he most
popular
utility
glider in the 30's
and a few survive. The one
MARTIN M-l
N21733
SPECIFICATIONS
Span
.48 ft.
Area
180 sq. ft.
Aspect ratio
..
12-8
Empty weight
.438
lb
Payload
.193 lb
Gross weig ht,
.b31
lb
Volmer
Jensen built the M-I
for
Jim Mar
Waggy
of
Ft. Stockton. Tex.
Colored
yellow
Wing Iloading
3.5 Ib./sq. ft.
tin in 1939 and it was entered in a
number
and red. EXP.
Structure: wood/fabric.
of Nationals. some by Emil
Lahecka.
a sub
OTHER
PERFORMANCE
;equent owner. t features a gull wing and
Designer . , .. Volmer Jensen
LID max
25 @ 48
mph
(es
J
is now
for
sale by its present
owner, Gene
References: 5-0 53, p. 2,
photo.
Min. sink
.2.5 fps @ 38 mph
(ed.)
MAY 1964
19
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OTHE R FOREIGN·BUILT SAILPLANES IN THE UNITED STATES
SCH
EI
BE·FLUGZEUGBAU
G.M.B.H.
August.Pfaltz Str. 23
806 Dachau. bei Munchen.
West
Germany
L SPATZ 55
SPECIFICATIONS
Span
49.2
ft.
Area
127
sq. ft.
Aspect ratio
19
Airfoil Mu, 14%
Empty weight
341
lb.
Payload
242
lb.
Gross
weight
583
lb.
Wing
loading
.4.6
Ib./sq.ft.
Structure: wood/fabric wings
and
tail, steel
tube/fabric
fuselage
PERFORMANCE
LID
max
.29
@45 mph
Min. sink
2.2
fps
@ 39
mph
6-fps
sir.k @
73 mph
quick assembry.
Arnold Skopil
OTHER
Designer
Egon
Scheibe
No. built in Germany
400
No.
active in the U.S.
7
References: WS-I, p.
74
Price: $2275
plus
shipping [air
freight
to
New
York
about
$600)
and 11 12 10 duty.
Photo
by
Eugene Bartos
The L-Spah-55
is
an inexpensive Stand. ,d
Class sailplane developed in 1955
from the
earlier Spatz and
L-Spah.
One was flown
422
mi. in
Germany by Baptist Hofmann.
It
features dive
brakes and very quick assem
bly.
ATC.
The
Bergfalke
II/55
and
its
similar
predeces
sors,
the
Mu-13-E
and Bergfalke II have been
in production
since
195 t The current model
is
designated Bergfalke
III. It features 4
degrees
wing
sweep forward,
dive
brakes and
of Aberdeen.
Photo by Robert Lee Moore
Wash., has installed a retractable 44-HP
Nelson engine
in
the
rear
seat of
his,
N7149C. Specifications
given
are
for the
model III which has increased weights over
the II/55. ATC.
SCHEIBE BERGFALKE II 55
SPECIFICATIONS
Span 54.5 ft.
Area 192.7 sq.
ft.
Aspect ratio 15.6
Empty weight 606
lb.
Payload
..
4 J9 ,lb.
Gross weight 1025 lb.
Wing loading 5.32 Ib./sq. ft.
Structure:
wood/fabric wings and tail,
steel
tube/fabric fuselage.
PERFORMANCE
LID max
28
@
50
mph
Min. sink
2.4
fps
@
44 mph
6-fps
sink
@
77
mph
OTHER
Designer
Egon Scheibe
No.
built in Germany.
500
No. active in the U.S.
5
References: WS-I,
p.
76; 112-59, p.
18, article
on powered version.
Price: $3225
plus shipping (air freight to
New York about $800) and 11
1
2 /0 duty.
SCHEIBE ZUGVOGEL iliA
SPECIFICATIONS
Span
55.8 ft.
Area ..
156 sq.
ft.
Aspect
ratio
20
Airfoil . NACA 63 (2)-616/614
Empty weight 551 lb.
Payload
254 lb.
Gross weight
805
lb.
Wing loading
5.
J
2
Ib.lsq. ft.
Structure:
'.Vood wings,
wood/fabric tail,
steel-tube/fabric
luselage with fiberglass
Photo by Leslie
Benis
nose covering_
OTHER
Designer
Egon
Scheibe
PERFORMANCE
No. built
in Germany
.100
The
four Zugvogel lilA's
imported to
date
No. active in the 'U.S.
.. .4
are all in
California.
It features dive brakes
LID
max.
37.8
@
58 mph
References: WS-I, p.
73.
and quick
assembly. Current production
Min.
sink.
. 2
fps @ 46
mph
Price: $3675 plus shipping
(air
Ireight to
model is desigrated IIIB. EXP. (ATC applied
6-lps
sink
@
. .93 mph
New York
about $800) and
1
2%
duty .
lor) .
S O R I N G
0
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SCHEIBE SF-26·STANDARD
SPECIFICATIONS
Span . . 49.2 ft.
Area
. 132.4 ''1. ft.
A.pect
ralio 18.2
Aidoil .NACA
b
215)-blb/bI4
Emply weight
419
lb.
Pay'load . 2b5 lb.
Gr o. .
weight b84 lb.
Wing 10dding ..
5.14 Ib.l.q. ft.
Structure: 3-piece
wood
wing, wood/fabric
tail,
.teel-tube/fabric fu.elage
with
fiber
gla . . n o ~
PERFORMANCE
LID max (@
bl7
lb.) 31.8 @
55
mph
Min . • ink (@
bl7
Ib.l 2.2 fp. @ 4b mph
b-fp• • ink @ (@ bl7 lb.). 8b
mph
OTHER
De.igner
.. Egon
Scheibe
No. built in
Germany
40
No.
active
in the U.S. I
Price: $2725 plus shipping (air freight to
New York about $700) and 11112 /0 duty.
The SF-2b-Standard is Scheibe's
high-per
formance Standard Class sailplane. It has
dive brake•.
Capt.
Howard
Everhart of Still
water,
Okla.,
has imported one, NI151Q,
that is red and yellow.
Photo by S. A.
Aldolt
The Standard Austria was developed in 1959
by the Austrian Aero Club and won the
19bO OSTIV Prize
for
the best Standard
Class design entered in
the
World Cham
pion.hip..
It
is being produced by the
Schempp-Hirth company in W. Germany. It
feature.
an
all-moving vee tail, has d·ive
brakes and is available with a retractable
wheel for Open
Class
com petition. Earlier
ones had an NACA b5(2)-415
airfoil
and
lighter weight. Ben
Greene
of Elizabethtown,
N,C., set a
.hort-lived
world goal
record
of
458 mi. with his, N4b22S,
and
the design
holds Ihe
current
world G&R
record of
434 3b mi. set in South Africa. ATC.
Price:
$4300
plus shipping (air freight to
New York
about
$700) and 12 /0 duty.
SCHEMPP HIRTH KG.
7312 Kirchheim-Teck
West
Germany
STANDARD AUSTRIA
SPECIFICATIONS
Span
. . . .
49 ft.
Area
14b sq. ft.
Aspect ratio . I b 7
Airfoil Eppler
2bb
Empty
weight
535 lb.
i'ayload 237 lb.
Gross
weight 772 lb.
Wing loading . . 5.3 Ib./sq. ft.
Structure:
all-wood, fiberglass nose.
PERFORMANCE
LID
max
34
@ bb mph
Min.
s i n ~
.
.. 2.1 fps @43 mph
b-fps sink @
. , . . .
100mph
OTHER
De.iqner
Rudiger Kunz
No. 'built
abroad . . . .
48
No. active in the U.S. . .10
References:
WS-II, p. 34, 7-bO p. 5,
photo,
specs; 9-b2 p. 5, article, curves,
spec',
photos;
3-M, p. 12, article, curves, specs.
LO-1S0
SPECIFICATIONS
Span
. .
.49 ft.
Area . .
. 117.'1 ' ft.
Aspect
ratio
.20.b
Airfoil .. Clark Y
Empty weight
. . 441 lb.
Payload . . . . . . 242 lb.
Gr o
. .
weight
. .
b83
lb.
Wing
loading
.. 5.8 Ib./sq. ft.
Structure: all-wood.
PERFORMANCE
L/D
max.
.
.34
@
b5
mph
Min. sink
.2.2
fp. @ 53
mph
b-fps sink @
.. 83 mph
Pholo
by S.
A. Aid
olt
OTHER
The Wolf Hirth company
in
Germany prod
De.igner
.Alfred Vogl
uced the LO-150
prior
to
Wolf'. death.
It N
III OV,
435
miles
to win the Barringer
No.
built in Germany 25
has
flaps for
glide path
control.
A. J. Smith Trophy
for 19b2
The other two in the U.S.
No. active in
the
U.S. . . . . . . . . . . .4
won the 19b1 Nationals in one, N33b, now
are
owned by Adolphe Gude of Rockville,
References: WS-I, p. b8; J-F 58, p.
18, de -
owned by
John
Slack
of
Naperville, III. Md.,
N3500G,
and Art John,on/Svend Jen
scription.
Harald Jensen of Elmhu..
t, III.,
flew his, sen of Chicago, III.,
N1015Z.
EXP.
M Y
1964
2
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SLINGSBY SKYLARK 3F
SPECIFICATIONS
Span 59.6 ft.
Area
173
sq. ft.
Aspect ratio
20.5
Airfoil NACA 63
(3)
-620,4415
Empty w i h ~ 600 lb.
Payload 230 lb.
Gross weight 830 lb.
Wing
loading
4.8 Ib./sq.
ft.
Structure: all-wood,
some
fabric on T.E.'s.
PERFORMANCE
L/D
max
31 .4@49 .5mph
Min. sink
.• 2.1
fps
@
44
mph
6-fps sink @ 76
mph
OTHER
,fL)esigrier
F.
N.
Slings
by
No.
built in
The Skylark 4 was developed in 1962
from
later versions of the
3,
and has
a new,
shal
lower
( us el ag e a nd o ut er
wing
panels.
It
has a
3-piece
wing, dive brakes
and comes
with either a take-off
dolly
or fixed
wheel.
Dick Johnson won the 1963 Nationals in a
Skylark 4
and
another
one
won the 1963
No.
active
in the
U.S.
References: WS-I, p.
108.
The Skylark 3 was introduced in 1955 as a
larger-span
successor to the
Skylark 2. Vari
ous 'etter models of
the 3
followed, the one
owned
by
Photo
by Dave King
Canadian Nationals. Dick Johnson
has
care-
fully
test fI
own his,
N7997
A,
at weight of
COO
lb.
and measured
a min . sink of
1.77
Ips @ ,-2
mph
and
LI
max. of 36.3 @
45.4 mph. He will provide airspeed calibra
tion curves
to oj·her Skylark
4 owners
on
re
quest.
A
TC.
Photo
by
Henry Ditlmer
Dick
Sundquist
of
Castle
Rock,
Colo.
Philip
Wills owned it and flew it in the 1960 Na
tionals.
It has a 3-piece wing,
'dive
brakes
and
a
take-off dolly.
Bob
Klemmedson of
Orinda,
Calif.,
has a 3D, N6295C, and Dick
Cookof Palo
Alto,Calif.,
has a 3F, CF-ZDV.
SLINGSBY
SAILPLANES LTD.
Kirbymoorside, York, England
SKYLARK 4
SPECIFICATIONS
Span .
..59.6 ft.
Area
173 sq. ft.
Aspect
ratio
20.5
Airfoil
NACA
63 (3)-620,6415
Empty
weight
600 lb.
Payload .230
lb.
Gross
weight
.. 830 lb.
Wing loading
4.8 Ib./sq.ft.
Structure: all-wood,
some fabric on T.E.'s.
PERFORMANCE
LI max
36 @ 45
mph
Min. sink 1.9
fps
@
44mph
6-fps
!irk @
.. 77
mph
OTHER
Designer
F.
N. S lings
by
No. built
in
England
60
No.
active in the U.S.
5
References: WS-II, p.
I18.
Price
$4250i
kit,
$2630;
plus
11
1
2 /0 duty.
pictured, N5563V, 's
an
F now68
SLlNGSBY
KIRBY KITE
N37190
SPECIFICATIONS
Span 46.6 ft.
Area
156
sq. ft.
Aspect
ratio
.
13
Airfoil Go 535
Empty weight 309 lb.
Payload
185
lb.
Gross weight
494
lb.
Wing
loading 3.17 Ib./sq. ft.
Structure: J -strut-braced wood/fabric wing>.
wood/fabric tai l, wood fuselage.
PERFORMANCE
LID max
.21
The
one
Kirby
Gull
in the U.S.was
builtfrom
p lans by Herman Kursawe
in 1946
and
is
now owned
by Tom
Smith of
Clinton, N.Y.
It is a 1938 design and features gull wings,
has a
take-off dolly and is
blue
and white.
22
OTHER
Designer F. N. Slings
by
References: WS-I, p . 120; 5 -37, p. 10, 3
view
EXP.
OTHER
Designer
F.
N. Slingsby
References
WS-I, p. 121;
N-D 48. p.
17.
Photo by Ray Shamblen
George Masinda of Royal Oak, Mich., owns
the
only
Kite in
the
U.S
.•
a British
design of
the 30',. It has no
wheel
but features a
gull wing.ATC .
SL N S
Y KIRBY GULL
N41829
SPECIFICATIONS
Span
50.2
ft.
Area
160 sq.
ft.
Aspect ratio 15.8
Airfoil
NACA
4416
Empty
weight .419 lb.
Payload
.206 lb.
Gross weight " .625 lb.
Wing loading .3.9 Ib.!sq.
ft.
Structure: I-strut-braced
wood/fabric
wings,
wood/fabric tail, wood fuselage.
PERFORMANC,E
LI
max 26 @ 48 mph
Min.
sink.
. . . . . . . . . . . . .2 ·fps @
40
mph
S O R I N G
Photoby
Tom
Smith
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The Weihe was produced
by
the
Focke-Wulf
company in
Germany
beginning in 1950,
from
a
design that
first flew in 1938. It
features quick
assembly,
has
dive brakes and
takes off on a droppable dolly. Dick John.
son won the 1959
Nationals
with a Weihe.
ITALIAN' M·100S
u S Agent: Jack Perine
304 Edmonston Dr.,
Rockville, Md.
SPECIFICATIONS
Span
49.2 ft.
Area
141
sq. ft.
Aspect
ratio
17.1
Airfoil .NACA 63-618/615 [mod.)
Empty weight
441
lb.
Payload
..
253
lb.
Gross weight
694
lb.
Wing
loading 4.9 Ib.lsq. ft.
Structure: wood/fabric wings and tail,
wood
fuselage.
PERFORMANCE
L/D max
30
@
50
mph
Min. sink 2.15 fps
@ 40 mph
6.fps
sink
@
. 83
mph
Some of those imported
are
ATC'd while
others are
EXP. because
of modifications.
References: WS·I, p. 56; S·O 46, p. 13, arti·
c1e specs; M·J 50, p. 9, photo, specs, p.
18. 3-view,
curves.
Designers
Alberto and Piero Morelli
No. built
in Italy. . . •. 58
No. active in the U.S. .3
References:
WS-II,
p. 140; 7-63,
p.
6,
photo,
specs
Price: 3000
plus
shipping ( 670 to
either
coast
I and
1 h
duty.
WEIHE
SPECIFICATIONS
Span
59.1 ft.
Are.a
198
sq. ft.
Aspect ratio
17.6
Airfoil
Go 549
Empty weight
508 lb.
Payload
230 lb.
Gross weight
738 lb.
Wing loading
3.7
Ib.lsq. ft
Structure: wood/fabric
wing
and
tail,
wood
fuselage.
PERFORMANCE
LID
max
31.5 @
47'mph
Min. sink
2
fps @ 40 mph
6-fps sink @
72
mph
OTHER
Designer
Hans
Jacob,
No active
n
the U.S.
6
An Italian
Standard Class
design, the
M
100S was first flown in 1960. It features
quick
assembly and unique rotating disc segments
for dive brakes.
The 3 in
the
U.S.
are owned
by Mario Piccagli of Chevy Chase, Md.,
Don Brockhurst of
Redwood
City,
Calif.,
and
Jim
Wasley
of
Orinda, Calif.
B.
Temple.
hagen of Oakville, Ont., has one, also. EXP •
(ATC
applied for).
OTHER
The Austrian MG-23SL is now in
production
and two have been imported
to
the
U.S.,
one
by Earl
Menefee,
the
agent,
and another
by
George Asdel of
Sunnyvale,
Calif. Improve
ments over the MG·23 include
a
longer
canopy
that slides forward, raised rudder
and
lowered
wheel.
A
TC.
OBERLERCHNER MG-23SL
U
S
Agent: Earl Menefee
1855-D Ednamary
Way,
Mt.
View,
Calif.
SPECIFICATIONS
Span
53.8 ft.
Area
153
sq. ft.
Aspect ratio
.18.54
Airfoil.
NACA
63-315
Empty weight
530
lb.
Payload
263 lb.
Gross
weight
793
lb.
Wing
loading
5.2 Ib.lsq.
ft.
Structure:
wood/fabric
wings
and tail,
wood
fuselage.
PERFORMANCE
LID
max
33
@
53 mph
Min.
2.1
fps
@
48
mph
6-fps sink
@
83 mph
OTHER
Designer
Erwin
Musger
No. built
in Austria
.26
No. active
in
the
U.S.
.2
References:
WS-I,
p. 10; 2-604 p.
15,
photo,
specs
Price: approximately 4600 delivered
to
California.
There
is one MG-23 in the U.S., N6729C,
owned by Dr. Bagshaw of Stanford, Calif.
Figures
for it are the same
as
for
the
MG.
23SL,
which
supercedes
it
as a production
model, except the
LID
max. is
only 32.
It
features a folding
tail, for
trailering, and
dive brakes. EXP. (ATC pending).
MAY 1964 23
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DUTCH SAGITIA
U S
Agent: Sypko Andreae
852 Mountain Blvd.,
Oakland, Calf.
SPECIFICATIONS
Span
.
48.5 ft.
Area 129
sq.
ft.
Aspect
ratio . . .
18.7
Airfoil NACA 63-618
Empty weight 487 lb.
Payload 220 lb.
Gross
weight
707
lb.
Wing loading
..
5.47 Ib./sq. ft.
Structure: wood/fabric wings and tail,
wood
fuselage.
PERFORMANCE
LI max. .34 @
53
mph
-Min. sink
2.1 fps @ 47 mph
6-fps sink
@
. . . . . • . 93
mph
Introduced in 1951, the Finnish
Vasama
(Ar
row)
is
a
Standard Class design
with
dive
brakes that
won the 1963 OSTIV Prize
at
the
World Championships.
t features a she ll
structure wing box and quick assembly. Don
Fisher, the U.S. agent, has importedthe onl'y
one
so
far, N7889C, coloredlight
blue. EXP.
OTHER The Dutch Sagitta (Arrow) is a Standard
Desigrler P. H. Alsema
No. built
in Holland 15
No.
active in the U.S.
1
References: WS-II,p.
154.
Price: $3884
plus
Shipping
and
11
1
12% duty.
OTHER
Designers T. Tervo, J. Jalkanen and
K Hedstrom
No. built
in
Finland . . .
27
No. active
in
the
U.S. I
References:
WS-II,
p.74; 3-62, photo,
specs;
1-63, p. i photo,specs.
Price:
contnct
agent.
Class sailplane featur ing
a
sliding canopy,
dive
brakes,
no skid,
quick
assembly
and
robus t const ruct ion. J im Hol liday o f San
Francisco, Calif.,
has the only one in the
U.S. so
far
but
two others are
on
order.
ATC .
FINNISH
VASAMA
U S
Agent:
Don
Fisher
962 Carson Dr.,
Sunnyvale.
Calif.
SPECIFICATIONS
Span 49.2 ft.
Area .126
sq.
ft.
Aspect
ratio
19.2
Airfoil. Wortmann FX-05-188 ( 1 4%) a t
root,
NACA 63
2 ) -615 at tip.
Empty weight .450
lb.
Payload .220 lb.
Gross weight
670
lb.
Wing loading 4.6 Ib./sq. ft.
Structure:
all-wood, fiberglass nose.
PERFORMANCI:
LI
max 34
@
60
mph
Min. sink
2.2
fps @
47
mph
6-fps
sink
@
88
mph
BREGUET 905s FAUVETTE
SPECIFICATIONS
Span 49.2 ft.
Area
121
sq. ft.
Aspect
ratio
20
Airfoil
NACA 63-420/613
Empty weight . . 422 lb.
Payload
183 lb.
Gross
w e i g h ~
.
605lb.
Wing loading . . .
5 Ib./sq.
ft.
Structure:
wood
[ply/plastic)/fa bric wings
and tail;
steel.tube frame, ply/plastic cov
ered fuselage.
PERFORMANCE
UD max
Min. sink
6-fps
sink
@
..
30
@
48
mph
2.1 fps @ 40 mph
78
mph
OlHER
Designer
.
Breguet
Photo by
S.
A. AJdott
and dive brakes. One
is in the U.S., N280M,
owned
by Dale
May
of Mt.
Prospect,
III.
ATC.
No.
r.uilt in France over
50
e f e r e n c ~ s
'NS-II,
p. 90.
The
Breguet90S,
Fauvette
is
a
French
Stand
ard Class
design
featuring a large
v tail
The Elfe PM-3
is
a
one-of-a-kind
sailplane
brought to t ,he U.S.
b y R en e Comte of
Switzerland who
entered it in the
Nationals
but damaged i t early in the contest. It is
now
owned by Rodney Smith of Oklahoma
City,
Okla.
It
features
full-span airfoil
flaps,
divebrakesand
a
take-off
dolily. EXP.
SWISS
ELFE
PM-3
N63514
SPECIFICATIONS
Span
52.5
ft.
Area
134
sq.
ft.
Aspect r.atio 20.5
Empty weight 730 lb.
Payload .210
lb.
Gross weight
.940
lb.
Wing
loading 7 Ib./
sq.
ft.
Structure:
all-wood
monocoque sandwich
PERFORMANCE
L/D max
40 @
63
mph
OTHER
References:
7-62, p. 2 photo, specs.
S O R IN G
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Photo by George Uveges
A most
popular
design developed in Ger
simple skid
landing
gear and dive brakes.
many ;n 1930,
thousands of Grunau
Baby's
The one
pictured here,
N3371
G,
was im
were
laler
built
in
many countries.
II
has a
ported
by the Lilienthal Soaring Club and
GRUNAU B BY 2
SPECIFICATIONS
Span .44.5 ft.
Area
.152.5
sq. ft.
Aspect ratio 13
Airfoil . . . . . . . . . Go 535
Empty
weight 350
lb.
Payload 200 lb.
Gross "eight 550 lb.
Wing loading 3.6 Ib. sq. ft.
Structure: I-strut-braced wood/fabric wings
and
tail, wood/fabric
fuselage.
PERFORMANCE
LI max
17
@ 38 mph
Min. sink
2.8 fps @ 34 mph
6-fps sink @
55 mph
OTHER
Designer
Edmund Schneider
No.
active in
the U.S.
2
References: WS-I, p.
95;
9-37, p. II, 3
view; J-F 42, p. 10,
article,
3-v;ew.
is flown al Elsinore, Calif. Bob Marlin of
Utica, N.Y., owns the other
aclive one
In
the U.S., N9079H. EXP.
OLYMPIA
SPECIFICATIONS
Span .49.3
ft.
Area 161 sq. ft.
Aspect ratio 15
Airfoil .. Go 549,
676
Empty weight .400 lb.
Payload
195 lb.
Gross
weight
595 lb.
Wing loading 3.7 Ib. sq. ft.
Structure:
wood/fabric wings and tail, wood
fuselage.
PERFORMANCE
L/D max
25@41 mph
Min. sink
.2.3 fps @
34
mph
6-fps sink
@
66 mph
OTHER
Designer Hans Jacobs
No.
active
in
the
U.S. . 2
References: WS-I,
p.
57 {Meise
51J;
WS-I,
p. 102 (Eon Mark
2);
5-39, p. 4,
article,
specs, 3-view; M·J
44,
p. 3, article, 3
view; S-O 46, p. II, article,
specs;
M-A
47,
cover,
p. 16, caption;
N·D
48, p. 4,
article by Ray Lunger on Ihe one he buill;
M-A 52, p. 26, 30, photo, specs, 3.view,
curves; 5-60, p.
18
article,
photo, specs;
"Aero
Revue," 3-63, p. 143,
article,
specs
and
3-views of all ships
entered
in Olym
pic
design competition.
Much has been
written about
the Olympia,
dS witness the references. The name comes
from the design competition conducled
to
selecl the one-design model to
be used
in
the 1940
Olympic
Games. The Games
were
cancelled bul
the
design was
produced
in
large
numbers by
many countries thereafter,
the German vetsion as Ihe
Olympia
Meise
51
and the
British
as
the
Eon
Olympia
Mark
2
(with
wheel). It has dive
brakes
and is
well-known for its good flying
qualities.
Two
were built from plans in the U.S. and two
are
active
now, N 1221 M, owned
by
Bill
Foley
of Glaslonberry, Conn., and N4943V,
owned by
Walt
Blake of Bellevue, Wash. EXP.
The Kranich III is a German two-place tan
where il
placed 2nd
and 3rd.
Only one has
dem design introduced in 1950 and flown
been
importeJ
to
the
U.S. and it is flown
in the 1962 World
Championships
in Spain
at
Elsinore, Calif., by
the
Lilienthal Soaring
MAY
964
FOCKE-WULF KRANICH
III
N74 28
SPECIFICATIONS
Span .59.2 ft.
Area 228 sq.
fl.
Aspect ratio 15.4
Airfoil Go 549, M 2
Empty
weight
730 lb.
Payload 420 lb.
Gross
weight I r50 lb.
Wing loading
5
Ib. sq.
ft.
Structure: wood wings and tail, some fabric
on T.E.'s, steel-tube/fabric
fuselage.
PERFORMANCE
L/D max
.31 @
56
mph
Min. sink
2.5 fps @ 48 mph
6-fps sink
@
86
mph
OTHER
Designer
.. Hans
Jacobs
References: WS-I, p. 55; 1-64, cover,
specs.
Photo
by
Jim
Go"
Club. It is white and red and has dive brake•.
EXP.
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WOLF
SPECIFICATIONS
Span 46 ft.
Area
.162
sq. ft.
Aspect ratio 13.1
Airfoil Gottingen 532
Empty
weight 350 lb.
Payload
200
lb.
Gross weight 550 lb.
Wing
loading 3.4 Ib.isq.
ft.
Shuct'Jre: I-strut-braced wood/fabric wings
and tail,
wood
fuselage.
PERFORMANCE
L/ D
max
.
17
Min. sink
3 fp s@40mph
The
Wolf
was
developed in
Germany
in
6-fps
sink @
.50 mph
1935 by
Wolf
Hirth. Records indicate
that
rere,
N22431,
colored silver and red, which
OTHER
about 52
were
built, including a few
from was
built
in 1945
by
a
vocational school
in
Designer
.
Wolf Hirth
plans in the U.S. Warren Price of Silver
Champaign, III. No spoilers.
German-built
References:
1-37, p. 6, article, 3-view; 7-37,
Spring, Md .
has
the only one
still
active
versions are ATC'd,
but
Price's
is EXP. p. 8,
photo,
specs.
Photo by Donnis Allen
MINIMOA
N16923
SPECIFICATIONS
Span
55.7
ft.
Are6
205 sq.
ft.
Aspect
ratio
16
Airfoil
Go
681,
693
Empty weight
440
lb.
Payload
260 lb.
Gross
weight
700
lb.
Wing loadir,g
3.2 Ib.isq. ft.
Structure:
wood fa
ric wings
and
tail,
wood
fuselage.
PERFORMANCE
L/D
max
26
@ 53
mph
Min. sink
fps
@ 37
mph
OTHER
Designer Wolf Hirth
No. built
in Germany 110
References: 1-37, p. 4, article, 3-view; 7-37,
p. 6, photo, specs;
M-J
56, p. 13, article.
The Condor 4 first flew in 195 I and a num
bEr
were
built in Germany
by
Schleicher.
S"me were
entered in the 1952
World
Cham
pionships
in
Spain where
E
G. Haase
set
a
"arid
multiplace 100-km.
triangular
course
speed record. Hans Luenger
of Clevel1and,
Ohio, imported
the one pictured
in 1960.
The
original wood fuselage
was
damaged
and
has been replaced with one of steel-
SCHNEIDER
ES·S ARROW
VH·GNB
SPECIFICATIONS
Span 43.4
ft.
Area
I 18.3
sq. ft.
Aspect
ratio
16
Airfoil NACA 63-618 mod.
Empty weight 383 lb.
Payload
33
lb.
Gross Nelght .616
lb.
Wing loading
5.2 Ib./sq.
ft.
Structure:
wooeL/fabric
wings
and tail, wood
fuselage.
PERFORMANCE
L/D max
28 @
51 mph
Min. sink
2.7
@ 48
mph
6-fps sink @ 76
mph
The
Minimoa
is distinctive
for
its gull wing
and the soaring history it made after its
introduction in 1936. It established
many
records,
including altitude using lift in Cu
Nims. The one pictured, N 16923, was
brought to
the
U.S. on
the
Von Hindenburg
tube/fabric construction with built-in wheel.
The
ship
features a gull
wing, dive brakes,
all-moving tail and two-place
tandem seat
ing.
Colored white
and red.
EXP.
OTHER
Designer
Heini Dittmar
No. built in Germany
18
References: WS-l, p.
90.
Photo by
E. J.
Wally
Zeppelin.
It
is
now all
white and is owned
by
Del Booth of
Fort
Worth.
One
other is
known to be in the U.S., N 18163, but has
not
been
active for some years. Last known
owner
was
Charles
Burdick
of
Utica, N.Y.
ATC.
SCHMElZ
CONDOR
4-2
N6S07D
SPECIFICATIONS
Span
59.2 ft.
Area
230
sq. ft.
Aspect ratio
15.2
Airfoil
.Go
532, NACA
0012
Empty weight
.868 lb.
Payload
320 lb.
Gross weight
11 88 lb.
Wing loading
5.2
Ib/sq.ft.
Structure: wood/fabric wings
and tail,
stee'l
tube/fabric
fuselage.
PERFORMANCE
L/D max
30@50mph
Min. sink
2.3
fps
@ 43
mph
6-fps
sink @
..
76
mph
OTHER
Designer
Harry
Schneider
No.
built in Australia
7
Refarences: WS-II,
p. 28.
Price: $4750 on
west coast.
The
Arrow
is
the only
Australian
sailplane
in the U.S., now owned
by
John Wother.
spoon of Alamo, Calif., colored white and
bearing
its
original registration letters.
It
is
a Standard Class design with dive
brakes
and this one was flown in the 1953 World
Championships.
It features a one-piece wing
and
quick
assembly. A IS-meter,
2-piece
wing
version
is
being
constructed for the
955
World
Championships. Australian ATC.
S O R IN G
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POLISH ORLIK
N23727
SPECIFICATIONS
Span
49.2 ft.
Area
159
sq.
ft.
Aspect ratio
.15.2
Empty weig ht 370 lb.
Payload
210 lb.
Gross weight 580 lb.
Wing loading
3.65 Ib.lsq. ft.
Structure: wood/fabric
wing
and tail, wood
fuselage.
PERFORMANCE
L/D
25
OTHER
Designer
A.
Kocian
References:
"Aero Revue,"
3-62, p. 143,
specs, 3-view.
The Mucha Standard was developed in Po
land
for the
1958 World Championships
held
in that country, where it
took
first place
in the Standard Class. Produced in quantity
thereafter, it was used in a subsequent
Polish Nationals
as
the one
design
flown
by
The Orlik was a
Poli.h
entry in the 1940
Olympic design
competition.
One
was exhib
ited
at ·he New York
World
Fair,
purchased
by
a
private party,
confiscated by the
State
during
the war,
sold surplu, later,
overhauled
by Clarence See,
sold to
Paul MacCready,
Jr., who won the 1948 and 1949
Nationals
with it, sold to George
Lambros,
flown by
Lyle
Maxey
in the 1961 Nationals, and
re
cently
sold to
Merritt
Wilson of
La Canada,
Calif. It is red and
white
and features gull
wings and a take-off dolly. The photo
show.
Paul MacCready flying it at Torrey Pines
without the
canopy.
EXP.
SZD·22C
MUCHA
STANDARD
N3358G
SPECIFICATIONS
49.2 ft.
Area
137
sq.
ft.
Aspect ratio
17.65
Airfoil
G0549,M12
Empty
weight
530 lb.
Payload
240 lb.
Gros, weight
770
lb.
Wing loading
6.2 Ib.isq. ft.
Structure:
wood/fabric wings
and
tail, wood
fuseli!
ge.
PERFORMANCE
LID max
27.8
@
47 mph
Min. sink 2.4 fps @ 44 mph
6-lps sink
@
73
mph
OTI·I[;[,l
Designers. Nowakowski, Grzywacz and
Zatwarnicki
References:
WS-If, p. 164.
Photo
by
George Uveges
all entrants.
One has
been imported
to
the
U.S. and it is now owned by
Gene
Marks 01
Riverside, Calif. It has
dive brakes and the
C model has rubber water ballast tanks in
the wing
leading
edges. EXP
SZD·24C FOKA (SEAL)
N204FZ
SPECIFICATIONS
Span 49.2 ft.
Area 130.5 sq.
ft.
Aspect
ratio 18.5
Airfoil NACA 63 (3).618,4415 mod.
Empty weight 522 lb.
Payload 242 lb.
Gross
weight
764 lb.
Wing
loading
5.5 Ib.lsq. ft.
Structure: wood,
ply/plastic sandwich skins.
PERFORMANCE
L/D
max
34 @ 54
mph
Min. sink
2.2 Ips @ 47 mph
6-fps sink
@
80
mph
OTHER
Designers
Okarmus and Mynarski
Reterences: VvS-II, p. 166;
4·63,
p. 9,
photo,
specs Interavia, 8-62.
Price: approximately $4000 plus shipping.
Contact
Motoimport,
26 Przemyslowa, P.O.
Box 990, Warsaw, Poland. Duty extra.
The Foka is the
latest
Polish
production
Standard Class sailplane. It leatures a re ·
c1ined pilot positio" and dive brakes. Adam
Witek placed 3rd in the 1963 U.S. Na
tionals with a Foka
and
the
present
world
leminine
G R
record
of 284 miles was
set with a f'oka in Poland. F. Foz 01 Elkhart,
Ind. has
the
only one in the U.S., colored
white an :J
pale
blue. Since the U.S.
has
no
reciprocal licensing agreement with Poland
as yet, it is EXP.
SZD-19·2A ZEFIR 2
N86674
SPECIFlCATIONS
Span 55.8 ft.
Area
151
sq. ft.
Aspect ratio .20.6
Airfoil NACA 65 (2)-515 mod.
Empty weight 650 lb.
Payload .242 lb.
Gross weight 892 lb.
Wing loading 5.9 Ib.lsq.
It.
Structure:
wood,
ply/plastic sandwich skins.
PERFORMANCE
LID max
. .35
@
59
mph
Min. sink
2.4
Ips
@
54 mph
6-fps sink @
90
mph
M Y
1964
OTHER
Designer . Bogumil
Szuba
References: WS-If, p. 160.
Price:
approximately $4500
plus shipping.
Contact
Motoimport, 26 Przemyslowa, P.O.
Box 990
Warsaw, Poland.
Duty extra.
The
Zefir is
the leading Polish
Open
Class
competition
sailplane
which won the 1963
Photo by
e ~ l i e anis
World Championship. It leatures a reclined
pilot position, sloHed flaps, tail parachute
for braking and a retractable wheel/tow
hook unit. Je;'ry
Austin
of Pasadena, Calif.,
owns
the only one
in
the
U.S.
Since the
U.S.
has
no reciprocal
licensing
agreement with
Poland as yet, it is
EXP
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FLYING WING SAILPLANES
Photo by Fotomart
The
short-span
"Flying Plank" WaS
developed
in 1954 by
three
members of TSA
(the
EPB
in
the designation I
Phil Easley, Jack Powell
and
AI Brackstrom, as a mihimum-size
ship
that would
have
reasonable
performance.
The prototype EPB-I, N66348, pictured,
WaS
used for drag reduction tests at Mississippi
State
and
then retired.
Plans for the
EPB-IA
were
sold and a
number
of
ships have
been
built from them, including one with twin
rudders similar to those on the
EPB-I, now
owned by
Richard
Roberts
of
Glen
Burnie,
Md., N7634B; one by AI Cleave
of
Mer
cedes, Texas, an EPB-I C, N 19C. with 27-ft.
span
and
one
central vertical tail similar
to
the
other Plank pictured
here,
orange with
white
trim,
LID
max. of 23
@
60 mph; and
one by
Bill Idom
of Ft. Worth, Tex., an
EBI-IA,
N73869, similar
to Cleave's
but
with
span
of
30.5 ft.,
colored white,
flown 70
hours
in 1963. EXP.
EPB-IA FLYING PLANK
SPECIFICATIONS
Span
25 ft.
Area
100
sq. ft.
Aspect latio
6.25
Airfoil Abrial
15"/0
Empty weight
150
lb.
Payload
200
lb.
Gross weight
350
lb.
Wing loading 3.5 Ib.lsq. ft.
Structure:
wood/fabric.
PERFORMANCE
L/D max
20
@
60 mplt
Min. sink
3.5
fps @ 47 mph
6-fps
sink
.85 mph
OTHER
Designer A. A. Bachtrom
No. still
active
. . . . . . . . . . . . . 3
References: J-A
54,
p.
14,
article, specs,
3
view; S·O 54,
p.
18,
article; M-J
55,
p.
15,
article; J-F 57, p.
18,
article
on flight
tests,
curves, specs;
1-60,
p.
10,
article on
N7634B;
3-62, p. 16,
article.
Price:
$25
for plans
from A Backstrom, 3009
Dothan Lane,
Dallas 29, Texas.
MARSKE
XM.ID
N5823N
SPECIFICATIONS
Span.
40 ft.
Area
170 sq. ft.
Aspect
ratio
9.5
Airfoil
14%
Fauvel
Empty weight
350 lb.
Payload
200
lb.
Gross weight
550
lb.
Wing
loading
3.2 Ib.lsq. ft.
Structure: wood/fabric
wing,
steel-tube/fi
berg lass
fuselage.
PERFORMANCE
LID
max
28 @ 58 mph
Min.
sin'k
2.4
fps
@
42 mph
6-fps sink @
75 mph
OTHER
Designer
James Marske
References: WS-II,
p.
226;
12-60, p. 4,
arti
cle, 3-view.
Jim
Marske
of Michigan City, ,I.nd., built his
XM-I in 1957,
originally
with twin fins on the to fly, being ;+all- and spin-proof. Colors
available
for
home builders. Under construc
wing
tips but later modified
to
have only
are white with red trim. He
plans
a
tapered
tion now is
an
all-fiberglass flying wing for
one
vertical
tail on
the
fuselage.
It
is
easy wing
version
for which
plans
will be made
Standard Class competition. EXP.
S O R I N G
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FAUVEL AV-36
N4839V
SfECIFICATIONS
Span 39.2 ft.
Area
153
sq.
ft.
Aspect ratio
10
Airfoil
F
(2),
17 /0
Empty
weight
21>4
lb.
Payload
.230
lb.
Gro"
weight
.494 lb.
Wing loading
3.2 Ib.lsq. ft.
Structure:
wood/fabric.
PERFORMANCE
L/D
max 24
@
52 mph
Min. sink 2.7
fps @
42 mph
I>.fps sink
@
.1>8 mph
OTHER
Designer
Charles
Fauvel
References: WS-I, p. 41; M-J
53,
p.
3,
arti
cle; J-A
53, p.
2
aerodynamic appraisal
S-O 54,
p. 12,
article
on flying
N4839V
2-1>1, p.
7, 310-km. flight description
1>-1>2 p. 12, 397-km. flight
description.
-.. :
N
4
8
1
9
v
The Fauvel AV-31> is a flying wing
built
in
quantify in
France.
An
effort
was made to
promote the
construction
of
some from
plans
in the U.S. but
Syd Hall and Fred
Jukich were the
only
ones to complete one.
~
. '
.... .
r ~ ~ . . . . . . . . . · _ ·
__-:
Jack Lambie owned it
for
a few years and
flew
it
a
lot.
It is now owned by
~ Latti·
more
of
Ft. Worth, Texas, and Dick
O'Neal.
EXP.
The
Horten
IV
flying wing was
an
outstand
ing German sailplane and
one
was imported
during 1950.
Rudy
Opitz flew
it
in
the
1952
Nationals and placed 7th. It later went
through
a
flight test program at Mississippi
State where
it still
resides and is for sale.
Photo by
Tom
Dilldrd
It features
19.3-deg. sweep, kneeling pilot
position, dive brakes
and
take·off dolly.
EXP.
OTHER
Designer
Horten brothers
References: N-D 50, p. 8, article, specs,
curves, 3-view.
HORTEN IV
N79289
SPECIFICATIONS
Span
1>5.1>
ft.
Area
227 sq.
ft.
Aspect
ratio
19
Airfoil
Horten
IV
Empty
weight
.501> lb.
Payload 21>4 lb.
Gross
wei g ht
770 lb.
Wing loading 3.39 Ib.lsq. ft.
Structure: wood/fabric
wing, steel-tube
fuselage.
PERFORMANCE
L/D max 31.7
@ 45
mph
Min.
sink 1.8 Ips @ 35 mph
I>-fps sink
@
.78 mph
BKB l
N2991G (WAS CF-ZDK·X)
SPECIFICATIONS
Span
40
ft.
Area
11>0
sq. ft.
Aspect ratio
10
Airfoil
NACA 8·H-12
Empty weight
410
lb.
Payload
.. 200 lb.
Gross weig ht
1>10 lb.
Wing loading
3.8
Ib.lsq.
ft.
Structure: all-wood.
PERFORMANCE
L/D max
30
@
54 mph
Min.
sin k
3
fps
@
45
mph
I>.fps sink
@
.73
mph
OTHER
Designer
S. K.
Brochocki
References:
WS-II,
p.
50;
"Aero Revue,"
The
BKB-I
flying wing sailplane
was
devel
oped in Canada in
1959
by
S. Brochocki,
Witold
Kasprzyk
and
A.
Bodek
and
is
owned
,},y
Mr. Kasprzyk.
AI Wilson
of Seattle,
Wash .. has it,
however,
for flight testing. It
has
37 hrs. t o ~ l time,
won't
spin and doesn't
drop
a wing
after
stalling. Wing
tip
rudders
deflect
70
deg.
to
act
as
spoilers.
Wing
has
48-in. chord and is
swept 13
deg. Colored
white
and black. Wilson
is building a
similar
sailplane with
51 .3·ft.
span and Kasprzyk is
building one
with
38-in.
chord,
50-ft. span
and 15-deg. sweep
he
expects
will
have
an LID
max. of 38. EXP.
M Y
1964
EXLINE PRIMARY
N14E
SPECIFICATIONS
Span 38
ft.
Area . 190
sq.
ft.
Aspect
ratio
7.1>
Airfoil Gottingen
Albert
Exline of
Miamisburg, Ohio,
built
this
primary
glider in
191>2 with James Ex-
line, modifying a
design
by Jack Herrick.
It is colored red and white. EXP.
9
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OTHER U S ONE-OF-A-KIND SAILPLANES
ROSS RS-l ZANONIA
N18134
SPECIFICATIONS
Span
46 ft.
Area
125
sq.
ft.
A -pect r ~ i o
17
Airfoil
NACA
2418, 2412
Empty
weigh+
330 lb.
Payload
270
lb.
Gross
weiCjht
600
lb.
Wing loading
.4.8
Ib./sq.
ft.
Strueture: all-wood.
PERFORMANCE
LI
max
29
@ 48 m ph
Min. sink
2.3
fps @
43
mph
6.fps sink
@
75
mph
OTl-iER
Designer Harland
Ross
References: 10·37, p. 7, article on construc
tion, specs, 3·view;
J·F
41, p. 8, record
dis .
flight story;
M J
49
p. 7,
record
dis .
history
by
winning 1he 1940, 1941 and 1946
Nanona/s, placing third i n
1947
and second
in 1943,
set National
distance
records
of
290 mi. in
and
325 mi. in 1947, and
world aliitude
record of 33,500
ft.
in
1949.
It featureo a gull
wing and take-off dolly.
Now
owned by AI
Wyrick
of
Austin,
Texas.
Colored
white
with red
trim. EXP'.
RH-3
N69272
SPECIFICATIONS
Span 50 ft.
Area
146
sc:.
ft.
Aspeet
ratio
17
Airfoil
NACA 6J
(3)·618
Empty
weisht 480 lb.
Payload
235
lb.
Gross weig t
715 lb.
Wing loading,
4.9 Ib./sq. ft.
Strueture:
all-wood.
PERFORMANCE
LI
max
34
@
55
mph
Min. sink
1.8
fps @
38
mph
6-fps
sink @
8G
mph
$55 from Ross at 5719
Hanover
St., Wichita,
Kansas
67220. Mervin Hicks
of Aurora,
Colo., bought a set and over a
period <,f
10 years built the
RH-3, an
R·3 modified by
extending the wing, using a laminar airfoil
and flaps.
It first flew
on Jan.
" 1963 . EXP.
subsequent
Nationals
(2nd in
1956).
Brad
Straus then purchased it and it placed
2nd
in the '1960 Nationals flown by Bernie Car
ris. The wood
fuselage
and
tail
we,e
dam
aged later
in
an
accident so
Strauss had
an
all.metal fuselage and tail designed by
Adrian Kisovec (thus the K in the present
designation
I and built. Carris placed 2nd
with it in
the
1963
Nationals, only
8
points
behind
Johnson in a
k y l r ~
4. It has dive
brakes and a take-off dolly. EXP.
SO RING
After the RS-I, Harland Ross was
commis
sioned by
SSA
to design and build the
Ross
R·2 "Ibis" 'for promotion purposes. It was
quite similar to the RS-I but the gull wing
had
a
48-ft. span and
an
all.movinq tail was
used.
It made the first
wave flight
in
the
U.S. on
Oet.
25, 1938,
at
White
Mtn., N.H.
RJK·5
N79T (WAS N3722C)
SPECIFICATIONS
Span
55
ft.
Area
.125 sq. ft.
Aspeet
ratio
24.2
Airfoil
.NACA
63 (2)·615
Empty weight
485 lb.
Payload
265
lb.
Gross weight
750 lb.
Wing loading
6 Ib./sq.
ft.
Strueture: all·metal.
PERFORMANCE
LI
max
.40 @ 50
mph
Min. sink
1.74
fps @ 45
mph
6-fps sink
@
85
mph
OTHER
References:
WS-'I',
p.
189;
M-A
50,
p.
15,
photos,
abuilding;
.I-A 51, p. 19, a,ticle
on development;
5-0
51, p. 3, story of
world
dist.
record
flight of
535 mi., p. 14,
analysis of flight, p. 17, article on drag
reduction, curves, 3-view.
The RJ K-5, or R.J-5
as
it was
formerly
known,
became one of the world's most famous sail
planes when
Dick
John,on
flew
it 535
mi.
in
1951
for
a
world distance record that stood
fo' 12 years. It
was one
of the
first sail
planes
to
utilize a laminar airfoil, and achieve
a
glide ratio of 40 to I.
The
original design
was
almost entirely
that
of
Harland
Ross,
30
flight
sto,y;
J·F
49, p. 2,
record alt. flight
story;
A 50, p. 13,
specs, curves,
3
view
Harland Ro S
built the
RS·I in 1937 for
Harvey Stevens. hence the designanon. If
was
of
the
first
small.span high-perform
ance
sailplanes and
later, owned
and
p i i o ~ e d
by
John
Robinson,
made
American
soaring
Photo by Mervin Hicks
It was
"written
off" in 1940 when the pilot
tried to reverse an
auto
tow.
Ross later
altered the
design
to
remove
the gull,
change
to
a
23018 airfoil and simplify con·
struetion for home builders, designating it
the
R-3,
for which plans are availab'le for
whom Johnson commissioned
to
build it
in
1948.
Johnson
took
delivery
of
the
semi
complete ship in 1950
and
finished it at Mis
sissippi State,
incorporating
some
changes
of his
own.
With it he won the 1950, 1951,
1952
and
1954
Nationals and set
a
317-mi.
National goal record, a 363-mi. National
distance record, a 52.8-mph 100·km. trian·
gula,
speed course
record, and the
535-mi.
distance
recoi·d
before
selling
it
to Gra·
ham Thomson who placed
high
with it in
Photo by S. A. Aldott
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Harland Ross completed his two-place R·6 in
1956. It has the same wing as Ross originally
built for
the RJ-5 so it is one of the heav
iest wing loaded sailplanes in the world. It
movable
bubble. 'n 1958 Ross used it to set
world multi
place records in
all 3 speed cate
gories and the National G R record of
234.66 mi. Colored white. EXP.
has dive brakes and a take-off dolly. The
passenger
sits
aft
of the
spar under
a re-
P RL
PG·130 PENETRATOR
N8 46H
S P I F I ~ T I O N S
Span ., 48
ft
.
Area
. 130 sq. ft.
Aspect ratio 17.75
Airfoil
.Go
549
Empty weight
.. 480 lb.
Payload
200 lb.
Gross weight
680
lb.
Wing
loading
5.23
Ib.lsq.
ft.
Structure:
wood/fabric
wings
and
tail, wood
fusel'age.
PERFORMANCE
LID
max
.33
@
52 mph
Min. sink .2.1
fps @
44 mph
OTHER
Designer Harry Perl
References:
WS-I,
p. /89; S-O 53, p. 21,
photo, news item; M-A 54, p.
2
article,
specs
3 view.
Wade
Steinruck of Spring Valley, Calif. com
pleted his SCS-I in 1959 after many years
of
spare-time work. It features a vee tail,
spoilers in aft of canopy
hatch and
a 3
References: WS-II, p. 239, S-O 58, p. 2, story
ROSS R·6
N34H
SPECIFIC TIONS
Span
55
ft
.
Area
125
sq.
ft.
Aspect ratio
.24.2
Airfoil
NACA 63
(2)-615
Empty
weight
662
lb.
Payload
564 lb.
Gross
weight
.1226 lb.
Wing loading
9.8 Ib./sq.
ft.
Structure: all-metal.
PERFORMANCE
LI max
40
@ 66
mph
Min. sink
2.35 fps @ 60 mph
6-fps sink @
100 mph
of
speed
record flights;
10·60 p. 4, story
of ~ 6 5 m i flight; 10-61, p.
2 photo.
WHIGH M GW·l
N343L
SPECIFIC TIONS
Span
44.5 ft .
Area
. .. 107 sq. ft.
Aspect ratio
.18.5
Airfoil
NACA 23018
Empty
weight
340 lb.
Payload
200 lb.
Gross
weight
540
lb.
Wing loading . 5 Ib.lsq.
ft
Structure: all-metal.
PERFORMANCE
LID max
29
@
55 mph
OTHER
Designer Eugene Whigham
MAY 1964
Photo
by
Pete Sowers
Harry Perl of Livermore, Calif., completed
his Penetrator in I%3. It features an all and dive brakes. It had a take-off dolly but
moving tail,
styrofoam-filled
leading edge is now having a fixed wheel
installed.
EXP.
Photo by Rose Marie
Ucher
piece wing. Polished metal finish with orange
canopy
and
orange and
black
wing tip
stripes.
EXP.
STEINRUCK SCS-l
N32K
SPECIFIC TIONS
Span
44 ft.
Area
132.5 sq.
ft.
Aspect ratio
.. 14.6
Airfoil
NACA
33012
Empty
weight
314 lb.
Payload
236 lb.
Gross weight
550 lb.
Wing loading
..
4.15
Ib.lsq. ft.
Structure: all-metal.
PERFORMANCE
LI max
30 @
55
mph
Min. sink
2.2 fps
@
45 mph
OTHER
Designer A. C. Cordas
References:
7-59, p.
13 photo,
specs.
Photo by Gene Whigham
References: 7-60, p. 10 photo, specs; 3-61,
p.
7
photo; 10-61, p. 13, photo.
44.5-ft. span. It features a constant-chord
Gene Whigham
of San Diego,
Calif., first
wing with 25%-chord flaps of
22-ft.
span,
flew his GW-I
in
1959 with a
span of 40
ft.
and a fiberglass nose. It made a Diamond
Wing tips were added in 196 I giving it a
goal flight
in
1962. Colored yellow. EXP.
3
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TWEED GT-l
N7830C
SPECIFICATIONS
Span .
, ..
, , , , ,SI ft.
Area 155 sq.
ft.
Aspect ratio . . lb.7
Airfoil
NACA 43012A
Empty weight . 4b9 lb.
Payload
250
lb.
Gross weight
719 lb.
Wing loading ..
, ,4.8
Ib.lsq. ft.
Structure: all-metal.
PERFORMANCE
L/D
max . .
29@
47
mph
Min. sink 2.2
fps
@ 42
mph
OTHER
Designer,
,George
Tweed. Jr.
References: 7-bO; p. 10, photo, specs.
George Tweed's
GT·I first flew in
19bO and
was entered in
the
Nationals
that year but,
to quote George, "proved to be a
victim
of
technical obsolescence." However, both he
and
Jack Green earned their
Gold
badges
with it. Lower half of
nose
was made from
drop tank and upper half is fiberglass
laid
up
in the drop tank. It features a retractable
Photo by George Tweed
wheel and
is
colored brown
and
white. Cur
rent owner is Larry Erickson of
San
Diego,
Calif.
EXP.
GREE'N-TWE'ED GT·2
N94282
SPECIFICATIONS
bO ft.
150
sq. ft.
24
NACA
b5
3)-b 18
Span
Area
Aspect ratio
Airfoil
Empty weight
.
'" , .bIO lb.
Payload
250 lb.
Gross weight 8bO lb.
Wing loading 5.7 Ib.lsq. ft.
Structure: all-metal.
PERFORMANCE
L/D max
. . .
35 @ 57 mph
Min. sink
, ,2.1 fps @ 44 mph
OTHER
Designers George Tweed,
Jr., and
Frank
Green
References:
4-b3 p. 2,
photo,
specs.
As a
successor
to the
GT-I,
Frank
Green
and George Tweed,
Jr., of
La Mesa,
Calif.,
turned
out the
G T-2 in 19b3. It features a
3-piece wing, dive brakes and a vee tail.
It
is
still in the
c1ean.up" stage
so
should
end up
with beHer performance. Colored
white. EXP.
REBEL
N1392N
SPECIFICATIONS
Span
,48 ft.
Area
102
sq. ft.
Aspect
ratio . .
23.8
Airfoil NACA
b5
3)-518
Empty weight
403 lb.
Payload
220
lb.
Gross weight
b23
lb.
Wing
loading
"b.1 Ib.lsq.
ft.
Structure: all-metal,
foam/fiberglass
aft
of
spar.
PERFORMANCE
L/D max , , , ,
3 7 5
@ 57 mph
Min. sir \
2fps@51 mph
OTHER
Designer Irving Prue and Lyle
Maxey
Referen' es: 8-59, p. 9,
photo; l-b2 cover.
The Rebel was
created
in 1957
by
Bob
Brown, now in Lancaster, Calif., by mating
the
wing
from the famous Jenny-Mae
sail
plane (a
Lyle
Maxey wing on
a Prue/Frank was lightened
by
using
fiberglass over foam
Kerns
fuselage/tail).
with
which Maxey
won aft of the
spar.
It features a
vee tail
and
the 195b Nationals,
to a
Prue 215 fuselagel
retractable wheel.
Brown now has it up
for
tail.
Dive brakes were
added
and
the
wing sale. Colored red and
white.
EXP.
S O R I N G
2
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hoto
y
eorge Uveges
two-place
tandem
fuselage
with a
conven
tional
tail.
He completed his Silver and
Gold badges
in
the
ship
and made
a
num
ber
of
200-mi. X-C's.
It was
slightly
dam
aged
in
the /962 Nation ls
and will be
Vern Hutchinson of Lawnda,le, Calif., com
pleted the original version of the
HS-127
in
Dec.,
1956,
which
had a
two-place, side
by-side
seating fuselage
with
vee tail. In
Aug., 1960, he
put the
wing
on the
present
HUTCHINSON
HS-127
N62P
SPECIFICATIONS
Span
55.5
ft.
Area
132
sq. ft.
Aspect ratio
, 23.5
Airfoil
NACA
65
(3)-618,
a=.05
Empty weight ,804 lb.
I 'ayload
.606
lb.
weight
, ,1410 lb.
Wing loading
, 10.7 Ib.l
sq.
ft.
Structure: all-metal.
PERFORMANCE
L/D max 33
@
67 mph
Min. sink 2.5
fps @
58
mph
6-fps
sink
@
110 mph
OTHER
Designer , ,Vernon Hutchinson
References: 4-6 I p. 3, photo.
repaired by it< new
owner,
Jaap Schmidt of
Van
Nuys, Calif. Featured
are
balanced
trailing
edge
dive brakes and a
retractable
wheel.
Colored white
and
red. EXP.
MATTESON M-l
N67l6C
SPECIFICATIONS
Span
51
ft.
Area
130 sq.
ft.
Aspect ratio
,20.3
Airfoil
NAC A
63-518, 4412
Empty weight ,515
lb.
Payload ,215 lb.
Gross weight
730
lb.
Wing
loading
5.6 Ib.lsq.
ft.
Structure: wood/fabric
wings
and
tail, wood
fuselage.
PERFORMANCE
LID
max
3,1,5 @
48
mph
Min. sink
2.17 fps
@
45 mph
6-fps
sink @ 82
mph
OTHER
Designers Fred
Matteson
and
Alfred Vogt
References:
WS-II, p. 230; 8·59,
1'. 13,
arti
cle;
7-60 cover.
Price: plans,
49.50, postpaid,
from Fred
Matteson,
841 Seale, Palo
Alto,
Calif.
Photo by Fred
Ha
II
Fred
Matteson of Palo
Alto,
Calif., com
pleted
his Mol in 1959
after
a
tour of duty
and materials.
It
features
a
foam-filled
wing
in Germany where construction was begun
leading edge, 3-piece wing, take-off dolly,
at Martin
Schempp's factory
after
Afred
large
lower-surface dive brakes
and
is col-
Vogt
redesigned it to German standards ored white. EXP.
OLDERSHAW 0-2
N7799C
SPECIFICATIONS
Span
49.2
ft.
Area
I
06 sq. ft.
Aspect ratio
,22.8
Airfoil
,
,63
3)-b
18, 63
(2
).615
Empty weight 535
lb.
Payload
260
lb.
Gross
weight ,
,795 lb.
Wing loading . , . '
7.5
Ib.lsq. ft.
Structure:
all-wood.
PERFORMANCE
L/D max
, .
37 @
67 mph
Min. sink
2.1
fps
@
55 mph
OTHER
Designer Vernon Oldershaw
References: 8-6 I p. i photo, specs;
12-6 I
cover.
33
Photo
by
Don Winslow
Vern
Oldershaw of Bakersfield, Calif.,
wanted
ing
one
of 294.6
mi. It
has dive brakes and
something comparable
to the RJ-5 so
built
features a vee
tail
and
retractable wheel,
his
0-2
which first flew in June, 196 I. He
although a fixed wheel is being installed so
entered j t in
the
1962 and 1963 Nationals,
the
ship
will
qualify for the Standard Class.
making a
number
of 200-mi. flights, includ-
EXP.
MAY 1964
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J
Dick Johnson of Dallas, Texas, finished his
two· place, "double-bubble" Adastra
in 1960,
when
it
had
a
tee
tail and Eppler
150
air
foil,
and
flew
it
in
the
World Champion
ships in Germany (15th). Later
that
year
he
installed the
present
conventional tail
and then
extended
the
wing
trailing edge
10%
of the
chord to convert
the
airfoil
to
y
Henry
Ulttmer
an
Eppler 151. He placed
7th
and
2nd
(by
17
poin·ts), respectively, in the 1961 and
1962
Nationals
with it. It
has
dive brakes
and is colored white with red trim. EXP.
References:
WS-II,
p. 228;
2-60
p.
8,
article,
specs,
photos
a'building; 5-61,
p. i,
photo;
1-62, p. 4, article on development; 9-62
cover.
JOHNSON
ADASTRA
N4921C
SPECIFICATIONS
Span
.56.33 ft
Area
178
sq.
ft
Aspect ratio
17.84
Airfoil
Eppler
151
Empty weight
649 lb.
Payload
391
lb.
Gross weight
1040
lb.
Wing loading.
5.85 Ilb./sq.
ft.
(4.65 solo)
Structure:
all-wood.
OTHER
L/D
max
(solo)
.37
@
60.4 mph
Min. sink
(solo)
2.28
fps @ 54.6 mph
6-fps sink
@
(solo)
88.2
mph
P RKER T·BIRD
N8008H
SPECIFICATIOIIIS
Span
50.7 ft.
Area .120 sq. ft.
Aspect ratio
21
Airfoil .
Wortmann FX
05-191
Empty
w ~ i g
545
lb.
Payload
180
lb.
Gross
weight
725
lb.
Wing
loading
6
Ib./sq.
ft.
Structure: all-wood, fiberglass
covered.
References: 2-62,
p.
16,
article, specs;
8-62,
p. 18, article on test flights,
3·view;
5-63,
p. 6, pil"t report.
The T-Bird gets its
name from the distinctive
tee tail it sports. Begun
in 1956,
it
first flew
in 1962
and
placed 8th in
the
Nationals
that
year
flown by its
designer/builder, Ray Par
of Inglewood, Calif. It
has
dive brakes,
is colored
white with red
numbers
and
has
flown
90 hours
to
date.
EXP.
Photo
by
Kirk
Harris
Photo y
Pete Bowers
The
L il
Dogie was developed in 1940 by
Irv
Culver
and
\'{ally Neugent as
a
short
span
high
[for
then
lowing loaded
ship
with
good
performance. Originally it
was
called
the "Screaming Vliener" because
of
the
shrill
whine it
made while
climbing on tow.
It
a number of
200-mile flights, Ray
Parker placed 6th with it in the 1946 Na
tionals at
Elmira,
and
Paul
MacCready,
Jr.,
brought
it
in
2nd
in 1947, setting a
230·
mi.
world G&R
record in the
process.
The
present
owner,
Wally Wiberg of
San
Diego,
Calif., acquired it later and flew it in the
1952 and 1954
Nationals. Wally won't
be
flying
it
again so has
it for s.le.
EXP.
OTHER
Designer .Irv Culver
References: N·D 41, p.
6, article;
J-F 47
cover, p I I I capi"ion.
LlL DOGIE
WAS SCREAMING WIENER)
N44W WAS N14287)
SPECIFICATIONS
Span _ . .36.7 ft.
Area
109.7sq.ft .
Aspect ratio
12.1
Empty
weight
.
350
lb.
Payload 190 lb.
Gross weight 540 lb.
Wing
loading .4.9 Ib./sq. ft.
Structure:
mostly
wood, some
fabric.
RIGID MIDGET
N90871
SPECIFICATIONS
Span
3.4
ft.
Area
100
sq. ft.
Aspect
ratio .14.5
Empty weight
.365 lb.
Payload
185
lb.
Gross weight
550 lb.
Wing loading
.5' .5
Ib./sq. ft
Structure: wood/fa bric
wings and tail, wood
fuselage.
PERFORMANCE
L/D
max
.27.5
@
55 mph
Photo by George Uveges
OTHER
The
Rigid Midget
is
owned
by Bill
Bowmar
Design er
,
.Irv Culver
of Altadena, Calif., who
finished building it
some time in Texas for a Nationals where
in 1947. It
has the same fuselage
and
tail
as Ray
Parker
flew
it on its longest flight
of
the Screaming Wiener
but
the wing design 235
mi. Stall
speed is 48 mph. Presently
was different,
resulting in
better
perform. being recovered, likely
to
be recolored from
ance. It has been flown 900 hrs .• including yellow to white. EXP.
34
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TRAGER·BIERENS T-3 ALIBI
N909D
SPECIFICATIONS
Span 47.4 ft
Area
140
sq.
ft.
Aspeet
ratio 16
Strueture:
wood/fabric
wings,
metal fuse
lage and tail.
PERFORMANCE
LID
max
.28
@
48 mph
Min. sink 2.2 fps
@
44 mph
OTHER
Designers Kempes Trager and John 8ierens
References: M-J 52, p. 6 article, 3-view;
5-0 55, p.
14
story of winning Nationals.
Kempes
Trager and John
Bierens
started
on
the T-3 in 1949 and finished it in 1951. The
objeet was to
obtain
performance without
building a complete sailplane from scratch
so a set of
L K
wings were used on
an
original all-metal
fuselage
with
vee tail
and
retractable
wheel.
Later
the wing was re
built
around the
L-K
spars
and
much
work
was
put
in on the surface condition. At
the
same
time
a
newall-metal
tail was made,
iust in time for Kempes to enter the 1955
Nationals
at
Elmir
which
he
won.
The ship
was later sold
to
its present owner, Guenther
Christiansen
of Atlantic City, N.J. EXP.
lEFFLER-MacFARLANE lM-l
N9646Z
SPECIFICATIONS
Span
50
ft
Area . 166 sq. ft.
Aspeet ratio
15
Airfoil
NACA
44
J
8, 4409
Empty
weight
500 lb.
Payload
.350 lb.
Gross weight
850 lb.
Wing
loading
5 Ib.lsq. ft.
Structure:
wood/fabric
wings
and
tail, steel·
tube/fiberglass
fuselage.
PERFORMANCE
L/D max
30
@
45 mph
(est.)
The LM-I is owned by AI Leffler of Los Ala
mitos, Calif., who designed and
built
it in
co-operation with
Walt
MacFarlane. It first
flew in Nov., 1963, and features a 2-wheel
DAAMS FALCON
N86430
Fred Daams of
Prescott,
Ariz.,
created
an
other variation-on.lhe-set-of-L-K-wings theme
with his Falcon, completed in 1962. The
fuse
lage is ali-metal, using a pylon tank for
the
forward
part,
and
the
vertical tail and
elevators are from a Cessna 140. The sta
bilizers fold up for
trailering.
The canopy is
Irom
an F-04
and
is
hinged
at the
rear,
openine; upwards. Estimated
glide angle
is
28 or 29. Ref. 8-62, p. 5, article. EXP.
Photo by George Vveges
retractable gear.
At the present
time
modi
fied L-K wings are in use but plans are to
replace
them
with a 56-ft. wing using a
Wortmann
FX
05-191 airfoil. EXP.
Sidney Yahn
and
Lou Falconi of Ros
down tail surfaces, retractable tow hook and
N.M., converted an L-K into the SL-I
lengthened Fuselage. The ship is
owned
by
1960 to March, 1963. It features a high
Yahn, now on duty in Montgomery, Ala.,
wing, no incidence, double
spoilers, cut-
but is stored in Odessa, Texas, until this
FAlCONI-YAHN Sl-l
N74072
SPECIFICATIONS
Span
50
ft.
Area .. 166 sq. ft.
Aspect
ratio
. _15.06
Airfoil NACA 4418, 4413, 4409
Empty weight
.567
lb.
Payload
308 lb.
Gross weight 875 lb.
Wing
loading
5.27 Ib.lsq. ft.
Structure: wood/fabric wings
and
tail, steel·
hobe/fabric fuselage with fiberglass
nose.
summer
when it will be
activated
again and
cleaned up. It has logged
60
hI's. of flight
time. EXP.
M Y 1964
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DOTTIE S
Nl031C
SPECIFICATIONS
Span .. 50
ft
Area 150 sq. ft.
Aspect
ratio
. .
16.6
Airfoil NACA 4415
Empty weight .400 lb.
Payload .. 200 lb.
Gross
weight 600
lb.
Wing loading
. . .
4
Ib./sq.
ft
Structure;
wood/fabric
I-strut-braced wings,
steel-tube/fabric
fuselage,
wood/fabric
tail.
PERFORMANCE
L/D max
. . . 20@45mph
Min. sink
.2.5 fps @ 40 mph
OTHER
References: 8-6 I, p. 7
photo,
specs.
~ r n Kelsey of Salt Lake City finished his
two-olace K·16 in 1961 and has flown it
over 100
hours
since, including a
number of
The
Dottie
S was
begun
as a High School
project by
George Bennett and
Richard
Carter of
State
College, Miss., and finished
in 1957 at Mississippi
State
with the help
of Guy Storer.
The wings are based on the
shorter
ones
of Art
Schultz's
"Midwest,"
the
KENNEDY K-W
N371M
SPECIFICATIONS
Span .33 ft
Area .128
sq.
ft
Aspect ratio 8
Airfoil Clark Y
Empty weight 390
lb.
Payload
.210
lb.
Gross
weig ht .600 lb.
Wing
loading
4.7 Ib.!sq.
ft
Structure;
wood/labric,
strut-braced, con-
stant-chord
wi,ngs; steel-tube/fabric fuse
lage and
lail.
PERFORMANCE
L/D max 1 6 @ 4 6 mp h
Min. sink
4 fps @ 44 mph
6-fps sink @
.54 mph
OTHER
Designer
. . Harold Kennedy
Photo by
Ro,e Marie
Licher
X-C's,
one
of which earned his Diamond
goal leg. Colored white with red trim. EXP.
Refere"ces; 7-63, p. 13,
photo.
Harold Kennedy
of Dodge
City,
Kansas,
pieced
together
his K-W glider with the
help of Floyd Watson in 1957. It is about
75 /0
airplane
parts, aft
fuselage and verti-
cal tail are Aeronca
Chief narrowed
down,
horizontal tail is Taylorcraft cut down
to
John Bock of Long Beach, Calif., designed
and
built
the Bock lover a number of years
and it fir,t flew in 1960. To date it has 180
hrs.
of flight
time, including
one 7;50-hr.
flight and one to 17, 100-ft., both in ther
mals. Colored blue and white with Day-glo
red
trim.
EXP.
horizontal tail is from an L-K and the verti-
cal tail was scaled down from that of a
TG-3A. The dolly wa, later replaced with
a fixed
wheel.
'No spoilers. Colored white.
EXP.
K LS Y K-16
N5050K
SPECIFICATIONS
Span . . 48 ft.
Area . .
175 sq.
ft.
Aspect ratio . . 13
Airfoil mod. Gottingen
IEmpty
weight . . . ,634
lb.
Payload ..
516
Ib_
Gross
weight .. I 150 l b.
Wing loadinq
. . .
6.5 Ib.!sq. ft
Structure;
~ t r u t b r a c e d wood/fabric wings,
steel-tube/fabric
fuselage.
PERFORMANCE
Min. sink 3.8 fps @ 45 mph
OTHER
Designer Wm. Frank Kelsey
8 ft.,
and
wheel, wings and struts
are
Aer
onca K
(spoilers added).
Flight
time
totals
270 hrs., including 180 by Harold's two
teen-age
sons. It has made some X-C's, one
of 140 mi. Colored white with red trim. EXP.
BOCK I
N9190Z
SPECIFICATIONS
Span
.34 ft.
Area J 02 sq. ft.
Aspect
ratio
. . . . I
' .3
Airfoil . . NACA 63(3)-618
Empty weight
. . . 395 Lb.
Payload 205 1 0.
Gross weight . .
600
lb.
Wing loading .5.7 Ib.!sq. ft.
(normal)
Structure;
all-metal, some fa bric;
I-strutted,
constant-chord
wing,.
PERFORMANCE
L/D max 18@55mph
Min. sink
4.4 fps @ 53
mph
6-fps sink @
.66
mph
SO RIN
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Photo by George Uveges
SCHULTZ ABC
N25699
SPECIFICATIONS
Span
48.5 ft.
Area
175 sq. ft.
Aspect ratio 13.5
Airfoil
NACA
b212 2412
Empty
weight .300
lb.
Payload .170 lb.
Gross weight
.470
lb.
Wing
loading
2.7 Ib.lsq. ft.
Structure: 2-strut-braced
wood/fabric
wings,
steel-tube/fabric fuselage.
PERFORMANCE
L/D max
.18
Min. sink
2.8 fps
OTHER
Designer Art Schultz
References:
5-37, p. 4
article, construction,
specs, 3-view; 7-37, p. 5,
photo,
specs;
8-37, p. 12
photo;
J-A 55, p. 4, photo.
The original ABC sailplane was built by
members of the A.B.C. Glider Club of De
troit, Mich., in 1937 and won a design com
petition
for
new
gliders
at
the
1937
Na
tionals. Plans
for the
design were later sold
and
some
addditional ABC's
came
into
be
ing. The only one recently active is pictured
here, now owned by Larry Bell of Temple
City, Calif.
EXP.
SCHULTZ NUCLEON
N7924A
SPECIFICATIONS
Span
.46
ft.
Area . 13 I sq. ft.
Aspect ratio 16
Airfoil NACA 65
(2)-415,
b4 I)
-A212
Empty weight
.345
lb.
MIDWEST
MU·l
N31680
SPECIFICATIONS
Span
3b
ft.
Area 172 sq. ft.
Aspect
ratio
7.5
Airfoil
.NACA
4412
Empty weight 323 lb.
Payload 190 lb.
Gross weight .. 513 lb.
Wing
loading
.3 Ib.lsq.
ft.
Structure: 2-st rut-braced , constant-c hord,
wood/fabric
wings;
steel-tube/fabric
fuse
lage.
PERFORMANCE
L/D maX
15@
36
mph
Min. sink
2.9 fps @ 30
mph
6-fps sink @
48 m'Ph
OTHER
Designer .
Art Schultz
References: M-A 45, p. 6, 22, article, curves,
specs, 3-view.
Developed in
1944,
the
Midwest Utility
MU-I received an ATC
and
was used in
the Army Glider Training Schools. The only
one known to still exist is owned by
the
Prescott (Ariz.) Soaring
Club.
rayload . . .
..
.
..
. . . 190 lb.
Gross
weight
535 lb.
Wing loading 4.1 Ib./sq. ft.
Structure:
I·strut-braced all-wood wings,
steel-tube/fabric wings and braced tail.
PERFORMANCE
L/D max
.22
Min. sink
.3.3 fps
OTHER
Designer
Art Schultz
References: J-F 55, p, 3, article, specs, 3
view.
Art Schultz
completed his Nucleon
in
1954,
Photo by Ralph Wodtl;
incorporating a number of unique features.
The laminar airfoil is stabilized with styro
foam blocks; to save weight, struts
are
used
but
they
are
fixed at both
ends and cuffed;
full-span flaps, with drooping ailerons, are
featured; and the horizontal tail
folds
up
for trailering.
It was flown in the 195b
Na
tionals and made several 200-mi. flights.
Ralph Wodtli of Coquille, are., owns it now
but
has it up
for
sale. It is hangared at
the
Sweet
Home,
are.,
Airport. Colored white
with blue trim. EXP.
The
Dale Hawk
2 was originally designed
and built in 1939 by Leland Hanselman and
Walter
Haufe (ref. 4-39
pp.
7
12; F.M 40,
pp.
b
8).
Hanselman's
home
town
was Dale,
Wis., hence the
name.
It made a
9:50·hr.
M Y 1964
Aight in '940. After storage
during
the
war
it
was rebuilt by the present owner, C. M.
Van Airsdale of Madison, Wis., with the help
of
Hanselman
and
Harry
Edwards. It has no
spoilers
and is colored
coppertone
and
Di-
DALE
HAWK
2
N18278
SPECIFICATIONS
Span
40.5
lb.
Area
140sq. f t .
Aspect ratio
.12.5
Airfoil
. U.S.A. 35A
Empty
weight
.. 300 lb.
Payload
190 lb.
Gross weight
.490 lb.
Wing
loading
3.5
Ib.l
sq. ft.
Structure:
wood/fabric.
PERFORMANCE
Min. sink
.3
fps @ 4 0 mph
ana cream.
Van Airsdale flies it at the Port
age, Wis., Airport. EXP.
37
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Photo y Pete Bowers
EXTRA COPIES
All extra supply of this "Direc
tory of All Active Sailplane 1\1od-
els in the UIlited States" .issu··
has been
printed
and copies
are
available for each. Buv some
for your local
~ I i r p o r t s
s ~ h o o l s
libraries, etc
..
or for your maga
zine tahle to
take
the
\ V · ~ a r
of
curiolls finl(ers. Order from SSA.
Box 6607( Los :\ngeles, Ca1if.
g0066.
Vern
Hutchinson made up
The Thing
from
a set
of
partially completed Aero .T. . G-2
wings, an
L K
horizontal tail and an
original
fuselage. After
this
photo
was
taken the
regular
ailerons
were
locked
and faired over
DETROIT GULL
Gl
PRIMARY
N52Y
SPECIFICATIONS
Spon
38
f.t
Area 170 sq. ft
Aspect
ratio 7
Airfoil
U.S.A.
35
Empty
V eight
.200
lb.
Payload 200 lb.
Gross weight 400 lb.
VI/ing loading 2.36
Ib./sq.
ft.
Structure: wire-braced, constant-chord wood/
fabric
wings and tail.
PERFORMANCE
LID max.
.8
@ 30 mph
PINKY (WAS "THE THING")
N4624V
SPECIFICATIONS
Span 40 ft
Area
140
sq. ft.
Aspect ratio I 1.5
Airfoil
U.S.A.
35B
Empty weight 535 lb.
Payload
200 lb.
Gross weight
735
lb.
Wing loading
5.25
Ib./sq. ft.
Structure: vee-strutted
wood/fabric
wings,
wood/fabric tail, steel-tube/fabric fuse
lage. •
PERFORMANCE
LID
max 16
and a set
of external
airfoil
ailerons were
added on the
trailing
edge. The ship was
later acquired
by its present owner, Clark
Spillers
of Saugus,
Calif.,
and renamed
"Pinky." EXP.
Photo by Dick Smith
Pete Bowers of
Seattle,
Wash., has
the
only
known
Detroit Gull
primary
glider that is
likely to fly again. Units were produced by
Detroit Aircraft in the early 30's
with
ATC
No.
I,
then Stone Aircraft
acquired
the
rights and
sold
some
p
ans
. The one Bowers
has
was almost completed by
Peter
Eyrud
of
Walla
Walla, Wash., stored during the
war,
acquired
by Bowers in 1954 and com
pleted. Although it is flown occasionally by
l'ete
he did writE
an article
on
the
subiect,
Don't Build a
Primary
(ref. M-A 57, p. 8).
EXP.
An
illustrated,
18-page booklet
designed
to
answer
the
questions
of
the uninitiated.
Price: 25 cents. postpaid
10
or
more. 15 cents each
from
SSA Box 66071
Los Angeles,
Calif.
90066
ZIPPO
CIGARETTE
LIGHTERS
Brush-chrome finish
EMBLAZONED WITH
THE SSA SEAL
$3.50 each from
SSA Box 66071
Los Angeles. Calif. 90066
NO MORE FLIGHTS
ABOVE 18,000 FEET?
Concluded
from page 4
Copies of these proposals 6.3-
WA-74) and (64-WA-9) are avail
able, at taxpayer's expense, hom:
Chief, Airspace Regulations
and
Procedures Division
Federal Aviation Agency
Washington,
D.C.
:2055.3
(Also, Air
Route
Traffic Control
Centers have copies for refu-ence. )
Comments should be sent to the
same place immediately. And after
yOll
have
sent your comment, send
a opy to your Airspace Commit
tee, Box 18, Savoy, Illinois, so we
can file a true
membership
position
statement
with the
FAA.
S O R I N G