mechanism of physics: hot air balloon

8/21/2019 Mechanism of Physics: Hot Air Balloon

1/14

Mechanism of Physics in Daily L

Hot Air

Balloon• Presented By: Qayyu

Alisa, Haa, Alif • Instructor: Madam F

• Group : 8 (em ! "#• Bismillahirahman

'


2/14

CREATION & INSPIRATION

arly ones )ere made *y +hue-ian.

/n $0 eptem*er $18!, 2oselp34al5and 2ac6ues3tienne Montol7er*rothers made a hot air *alloon in

Annonay, France. arly $0%#s, a more modern hot

air *alloon )as de9eloped *y d ost )ith an on*oard heat source.

As military si


3/14

Materials & Components

ENVELOPE ; made o5 nylon

< COATINGS ; usually silicon


4/14

TEMPERATURE & DENST!

Hih air temperature inside en9elope ; lesdense than surroundin air.

-i5t of re6uire slihtly reater temperaturedependin on desired rate o5 clim*.

/n "arm #ay, *alloon cannot li5t as muchon cool day.

In lo" atmosphere, li5t pro9ided decrease*y !> 5or e9ery $### m.


5/14

$o" #o hot air%alloons continue to

rise


6/14

Ideal Gas -a)

P ; p4 ? ?he #eal 'as La" 3 or Perfect 'asLa" 3 relates pressure, temperature, and9olume o5 an i#eal or perfect (as. ?heIdeal Gas -a) can *e epressed )iththe n#ivi#ual 'as Constant:

P V = m R T (1)

The equation (1) can be modified to:

P = ρ R T (2)

Because:-

ρ = m / V (3)

Atmospheric pressure: 101,300 Pa

Gas Constant: 287 J/k!"

Temperature: 373 "

Substitution (2):

101300 # p $287%$373%

ρ # 0!&'( k/m3

Normal (ambient) air density: 1!2 k/m


7/14

Buoyant Force

)hat is %uoyantforce

Application of %u

+ Buoyant 5orce determines 9olume

mass density

+ In *uoyant 5orce, )e =no) the

larer the *uoyant 5orce, the more

an o*ect Coat on the )ater


8/14

*re+uently as,e#+uestions

$o" to ,no" "hether hot air %alloon is in sta%le state

$o" to lo"er the hot air %alloontop 7rin the *urner so density o5 air )ill increase as the hot air *alloon to cool. /pen a small 9ent

$o" to maintain in a stea#y altitu#eBalloon operator must constantly:

+ /pen 7red

+ top 7red the *urner

Can the hot air %

It can *ut timin and )ind directthe hot air *alloon horiDontally.

Bear in mind that the )ind direc

Ee must 5ollo) the hot air *alloolo)er the hot air *alloon.


9/14

Relationship %et"een air pressure.#ensity an# temperature

Density is mass #ivi#e# %y volume/ Air density increases )ith altitude.

?he hiher the altitude, the hiherthe density

Pressure is cumulati9e efect o5 pusheerted *y surroundin pressure

Hiher increases )ith altitude

?emperature is the a9erae speed o5mo9in molecules.

?emperature o5 mass o5 air dependon 9elocity o5 air molecule and mass.

?emperature increases )hen densitydecreases


10/14

Hot Air Balloon Crashes

Factors o5 rashes

?)o maor 5actors are human error and the )eather.

Minor errors are e6uipment or tools 5ailure or mal5unction or damaed and

many more.

?he human error contri*ute to most o5 the crash.

Inappropriate in3Ciht plannin , misudement o5 )ind speed, and 5alse s=ill)hile handlin the Ciht.

?he crash also occur *y the )eather durin )indstorm , rainstorm, etc.

fect o5 hot air *alloon cra

the most common efe)ith po)er line, collaps

altitude, collision )ith

*urn and somet

all o5 these efects )il

and inur

serious inuries li=e 5r

*one, se9ere o5 nertendon damae, internal

*urn afectin most par

minor inuries li=e *ruise


11/14

Alternati9es to A9oid Hot Air Balloon

$ave proper 0i(ht plannin(/ Compulsory for the pilot an# passen(ers atten# to an e#uc

pro(rams that hi(hli(ht avoi#ance of po"er lines/ Launchin( an# lan#in( sites on a minimum open area of 12

feet clear from any o%struction . po"er lines etc/

To have every hot air %alloon a 3re e4tin(uisher suita%le foe4tin(uish propane 3res/ Proper maintenance for the %alloon/ Re(ular chec,in( for the %urner an# fuel system/ Replace any #ama(e# e+uipments


12/14


13/14


14/14

It )as narrated that A*u Hurairah said: ?he Messener o5 Allah use

567 89 : ; ?7 @7 89 : 7 ;

mechanism of physics: hot air balloon

Documents