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AERODYNAMICS IN CARS
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INTRODUCTION
AERODYNAMICS:
Study of forces generated by motion of air on moving body.
CLASSIFACATION OF AERODYNAMICS:external and internal subsonic su!ersonic "y!ersonic
FIELDS OF APPLICATION:
aeros!ace engineering design of automobiles s"i!s civil
engineering design of bridges etc.
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AERODYNAMIC FORCES ON A BODY
LIFT
(DOWNFORCE)
DRAG
WEIGHT
THRUST
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HISTORY OF EVOLUTION OF
AERODYNAMICS IN CARS
Design in earlier 20thcentur:
cars #it" lo# s!eeds no aerodynamic !roblems.
Car in earlier !0"s:
cars designed for big family$s com!lete negligence
of aerodynamics.
Car a#ter $0"s:
fuel crisis need of economic designs evolution of aerodynamics.
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%&Y %E NEED TO IMPRO'E
AERODYNAMICS IN CARS
SPEED
better aerodynamics "ig"er #ill be t"e s!eeds.
F(EL EFFICIENCY
better aerodynamics less #or% for engine.
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AERODYNAMICS IN MCLARENF1
FRONT END
REAR END
SCOOPS
%IN)S
Mclaren F1
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FRONT END
FRONTAL PRESSURE
PRESSURE DIFFERENCE
MINIMISE FRONTAL AREA
Back
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SCOOPS
ENGINE COOLING
INCREASES FLOW
RATE OF AIR
Back
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REAR END
REAR VACUM
FLOW DETACHEMENT
TURBULANCE
Back
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WINGS
PRODUCEDOWNFORCE
REDUCE DRAG
Back
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AERODYNAMIC DEVICES
SPOILERS
NACA DUCTS Nationa A!"i#o$%Co&&itt'' o$ A'$onati*# (NACA)+t,' -$'*$#o$ to NASA+ in 1./0
In*$'a#' $at' o o2To '3-o#' ai$ to a$'a# not '3-o#'! to
!i$'*t ai$ o24
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Back
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COEFFICIENT OF DRAG
D$a56 1783! 3 C! 3 A9"2
M'a#$' oa'$o!%na&i*
':*i'n*%4
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METHODS TO EVALUATE
AERODYNAMICS IN CARS
WIND TUNNELS; R'#'a$*, too to #t!% ''*t4;T$ia an! '$$o$ -$o*'##4
; S-'*ia -$'##$' -aint# o$ ana%#i#4
; D'tai'! ana%#i# o ai$ o2 -att'$n#4; Ana%?in5 o$ t,' o-ti&a !'#i5n4
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