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7/25/2019 Balloon Powered Car STAG
http://slidepdf.com/reader/full/balloon-powered-car-stag 1/4
Science Fair for Young Children SJK (T) ALOR GAJAH
Balloon Powered Car
Riniesha A/P Mugunthan, Gayastree Jasmin A/P Ramachandran,
Pritykka A/P Ramu, Thanush A/L Kalaiselvan, Theeban A/L Vellasamy
1. Abstract
The presen paper is an in!esigaion on he efficienc" of cars po#ered $" an air%filledo" $alloon in #hich conri$ues propulsion& The causes of energ" loss ha!e $een in!esigaed
heoreicall" and se!eral precise e'periens ha!e $een ade o deerine he aoun of
energ" loss ha occurs for differen causes& 'periens #ere done using iage processing
echni*ues+ easuring he !olue of he $alloon and is changes in se!eral cases and leading
o energ" anal"sis& , #ill $e sho#n ha a$ou -./ of he energ" #ill $e los as a resul of he
0oulin1s effec+ and a !aria$le aoun #ill $e los as a resul of he head loss&
2&2 Objective
To $uild a 3alloon Roc4e Car ha can e'rac he os energ" ou of he inflaed $alloon and
a4e he !ehicle ra!el he longes disance
2. Introduction
The ain ehod design #e #ill ephasi5e in his paper on is $" aaching he filled
$alloon o he car poining he insallaion of a filled $alloon on he car+ $ac4#ards and
ep"ing freel" in he air #ih is end poining o#ards he $ac4 of he car+ ep"ing freel" in
he air& ,n his case+ $ecause of he oenu of he ougoing air 6e+ a force #ill $e e'ered
o he car+ forcing i o o!e& There are oher ehods designs #hich use could uili5e a
$alloon o o!e a car as a source of energ" o o$ili5e he car as used in he 3alloon Car&
2.1 Background Information
The hrus of a 6e engine is siilar o he hrus produced in he $alloon roc4e car&
7hen he $alloon is $lo#n up he air is pushing on he $alloon s4in 4eeping i inflaed&
Co!ering he no55le of he $alloon 4eeps his high pressure air rapped and a his poin all
he forces are $alanced& Once he no55le is opened he forces inside he $alloon are no longer
$alanced and he high pressure air #ans o escapes hrough he no55le #hich produces hrus
and a4es he car accelerae&
Siilarl"+ in a 6e engine he air eners he engine #here i is copressed and heaed o
creae a high pressure region #hich is hen acceleraed hrough a no55le o produce a hrus
force& This principle follo#s 8e#on’s Second La# of 0oion+ Force= mass x acceleration&
Oher#ise saed+ if an o$6ec is aced on $" an un$alanced force i #ill undergo an
acceleraion& The aoun of acceleraion depends on he force and he ass of he o$6ec&
hat !"rces are acting "n the ball""n r"cket car# There are #o ain forces acing onhe $alloon roc4e car9 Fricion and Air resisance& The fricion force is he resisance $e#een
#o o$6ecs sliding agains each oher& 7hile $uilding "our car idenif" he places #here
o$6ecs #ill $e ru$$ing agains each oher creaing fricion& Air resisance is also anoher for
of fricion #here an o$6ec is sliding agains air paricles& You can e'perience his air
resisance #hen riding a $i4e and he #ind is hiing "our face& You us pedal fas enough o
o!ercoe he #ind& The roc4e car has he greaes air resisance #hen full" inflaed and
$egins o!ing $ecause here is ore area ha has o push pas he air paricles& One las ie
o consider $efore consrucing he $alloon roc4e car is ho# he no55le si5e #ill affec he
disance he car #ill ra!el& Keep in ind he no55le si5e #ill deerine ho# uch pushing
force (hrus) he $alloon #ill creae& The greaer he si5e he greaer he hrus $u he faser
he air #ill escape& The saller he no55le he saller he hrus $u he car a" roll longer&
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Science Fair for Young Children SJK (T) ALOR GAJAH
3. aterials and et!ods
C"linder 3alloon+ Hand" cuer+ Super glue+ 0as4ing Tape+ 0easuring ape+ :lasic #ire
eal casing+ floor carpe+ Hand sa#+ Ruler+ Calculaor+ and hand $alloon pup&
". #$%eriments
".1 #$%eriment 1 &'ifferent volume of air vs. 'istance travelled);esign he car $ased used rec"cle hings and in oher hand #e $uil he rac4 for launch he
car& Afer done he rac4 and car #e inflae he $alloon in hree differen !olues+ and hen
clipped hen+ #e clipped he no55le of he $alloons& 0easured he !olue of he air in he
$alloons& Seup he $alloon #ih car and inside he rac4& Then+ #e released he clip& Finall"+
#e record he disance ra!elled $" he $alloon po#ered car&
".2 #$%eriment 2 &ass of balloon %owered car vs. 'istance travelled(
7ih sae rac4 and he sae cars #e pased #ih he differen nu$er of ass coin& Then
inflae he $alloons in sae !olue Arrange he cars on he rac4 #ih differen nu$er of
ass coins& Then+ #e released he clip& Finall"+ #e record he disance ra!elled $" he
$alloon po#ered car& Calculae he disance and record he findings for < ies& Calculae hea!erage ie a4en afer < rials
). *esults and 'iscussion
).1 *esults
).1.1. +o investigate t!e relations!i% between t!e volume of air in t!e balloon and
distance travelled b, t!e balloon %owered car.
Balloon
Powered Car
Volume
of air
(cm3)
'istance travelled
& m (
+ 1 + 2 + 3 Average
A314.0 62 60 58 60
B401.9 99 94 95 96
C522.7 130 127
12
5 127
Ta$le 29 The =olue Of Air And ;isance Tra!elled Graf 29 =olue of air !s ;isance
The resul indicaes ha as he !olue of air inside $alloon increase+ he disance ra!elled $"
po#ered $alloon car increase& >sing he forula o calculae he !olue of air and record
disance ra!elled < rial and ge a!erage resuls $" add he disance of < rials and di!ided <&
The a!erage for highes disance is $alloon C + 2?@c and his !ariaion could $e e'plained
due o increase of !olue of air inside $alloon+ increase he disances is ra!elled &
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Science Fair for Young Children SJK (T) ALOR GAJAH
).1.2. +o investigate t!e relations!i% between t!e mass of t!e balloon %owered car and
t!e distance travelled b, t!e balloon %owered car
Balloo
nPowered Car
a!! of
"#e
$owere
d
%alloon
car (&)
'istance travelled
& m (
+ 1 + 2 + 3Average
&cm(
A35
103 99 100 100.6
7
B 55 54 60 56 56.67
C 75 23 28 25 25.33
Ta$le 29 The =olue of Air and ;isance Tra!elled Graf 29 =olue of air !s& ;isance
The resul indicaes ha as he ass of $alloon car increase+ he disance ra!elled $"
po#ered $alloon car decrease& Record disance ra!elled < rial and ge a!erage resuls $" add
he disance of < rials and di!ided <& The a!erage for highes disance is $alloon A+ 2..&@c
and his !ariaion could $e e'plained due o increase of ass of $alloon po#ered carB
decrease he disances i1s ra!elled&
).2 'iscussion
,n our firs e'perien+ #e calculae he !olue of air $ased his forula9
3ased on he forula+ #e anage o calculae !olue o a4e differen& Afer he car #as
placed on a surface and #as released+ he air o!es ou of he sra# in one direcion and he
car o!es in he opposie direcion& The $alloon po#ered car is a good e'aple of 8e#on1s
hird la# of oion& , saes+ To e!er" acion here is an e*ual and opposie reacion&D ,n his
case+ he air is pushed ou of he sra# in one direcion and he car is pushed in he opposie
direcion&
The $igger he !olue+ he farher should $e he disance ra!elled& On he oher hand+ he
$igger ass car+ #hich ra!elled less disanced The si5e of he $alloon affeced he
perforance of he car as #ell& The $igger $alloon had a greaer aoun of air on i han he
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Science Fair for Young Children SJK (T) ALOR GAJAH
saller $alloon& So #hen released+ he car #ih a $igger $alloon co!ered a greaer disance
for sure&
-. Conclusion
The resuls #e ha!e colleced are reasona$l" relia$le alhough here are soe
iscellaneous happen hroughou he e'periens& 7hen he !olue of air inside $alloon
increase+ he disance ra!elled $" he car also increase& 7hen he ass of po#ered $alloon
car increase+ he disance ra!elled #as decreases&
The $alloon%po#ered roc4e car is an e'cellen deonsraion of 8e#on1s Third La#
of 0oion& Air is copressed inside a $alloon ha is e'panded& 7hen he no55le is released+
he $alloon reurns o is original un%inflaed si5e $" propelling he air ou of is no55le& The
acion force of he e'pelling air produces a reacion force ha pushes he racer in he opposie
direcion& The engineering design of he racer is !er" iporan& The o!ing 3alloon
:o#ered Car has 4ineic energ"+ $u e!en an o$6ec ha isnE o!ing has energ"& This energ"
is called poenial energ"& The poenial energ" of he car is in he elasic aerial of he
$alloon& As he $alloon fills #ih air+ i $uilds ore poenial energ"& As he air flo#s fro he
$alloon+ i changes o 4ineic energ"& This is he conser!aion of energ"&
. Acknowledgement
7e #ould li4e o e'press our deep and sincere graiude o our science eachers+ as #ell as
our headaser+ parens and he organi5ers for gi!ing us he opporuni"+ guidance+
oi!aion and necessar" suppor&
/. *ecommendations
3ased on our sudies+ #e ha!e o coninues #ih in!esigae in differen area li4e+
odif" of shape car+ he fricion of surface and fuher ore #hich one ore relaed&
0. *eferences
eb
Aci!i"9 3alloon%po#ered Car AS ? April ?.2. hp9eachers&egfi%
42?&orgaci!i"%$allon%po#ered%car
3alloon :o#ered Car Se!e Spangler Science Cop"righ ?.2<
hp9###&se!espanglerscience&cola$e'periens$alloon%po#ered%race%car
3alloon Car Cones a 8ASAEs Je :ropulsion La$oraor"+
hp9$alloonh*&co$alloonIcar$alloonIcar&hl
J"urnal
:arha endedel 8o$aria+ Re5a 0ona5eri 8ain$+ Hossein A5i5inaghshc $!!iciency
$valuati"ns %! A &all""n P"'ered (ar 9 (?..)
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