Balloon Powered Car STAG

7/25/2019 Balloon Powered Car STAG

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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&




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 &




).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




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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Balloon Powered Car STAG