Problem 6. Jim Hall's Chaparral 2F sports-racing cars in the 1960's pioneered the use of airfoils mounted above the rearsuspension to enhance stability and improve breaking performance. The airfoil had an effective width (or span) ofb = 6.0 ft and chord length of c = 1.0 ft. The angle of attack varied between = 0° and a = -12°. The shape wassimilar to that of a NACA 23015 conventional airfoil. For a car speed of U = 90 mph on a calm day and a = – 12°,estimate (a) the downward force and (b) the increase in breaking force, AFB, produced by the airfoil accounting for"induced drag" for the finite wing and assuming a friction coefficient of uk1.0.

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Description: Problem 6. Jim Hall's Chaparral 2F sports-racing cars in the 1960's pioneered the use of airfoils mounted above the rearsuspension to enhance stability and improve breaking performance. The airfoil had an effective width (or span) ofb = 6.0 ft and c

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Problem 6. Jim Hall's Chaparral 2F sports-racing cars in the 1960's pioneered the use of airfoils mounted above the rear suspension to enhance stability and improve breaking performance. The airfoil had an effective width (or span) of b = 6.0 ft and chord length of c = 1.0 ft. The angle of attack varied between a = 0° and a = -12°. The shape was similar to that of a NACA 23015 conventional airfoil. For a car speed of U = 90 mph on a calm day and a = -12°, estimate (a) the downward force and (b) the increase in breaking force, AFB. produced by the airfoil accounting for "induced drag" for the finite wing and assuming a friction coefficient of µ; = 1.0.

Problem 6. Jim Hall's Chaparral 2F sports-racing cars in the 1960's pioneered the use of airfoils mounted above the rear suspension to enhance stability and improve breaking performance. The airfoil had an effective width (or span) of b = 6.0 ft and chord length of c = 1.0 ft. The angle of attack varied between a = 0° and a = -12°. The shape was similar to that of a NACA 23015 conventional airfoil. For a car speed of U = 90 mph on a calm day and a = -12°, estimate (a) the downward force and (b) the increase in breaking force, AFB. produced by the airfoil accounting for "induced drag" for the finite wing and assuming a friction coefficient of µ; = 1.0.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.10P

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