Car Tuning Aerodynamics and Body Styling 3

Question 1

What is the aerodynamic disadvantage of wide fender flares that extend beyond the original body line?

Accepted Answer

They increase frontal area and aerodynamic drag

Answer

Wide flares push the bodywork outward, increasing the frontal cross-section that must push through air, raising drag.

Question 2

Which material is preferred for high-performance body kits because it offers the best strength-to-weight ratio?

Accepted Answer

Carbon fiber reinforced polymer (CFRP)

Answer

CFRP combines extremely high tensile strength with very low mass, making it the top choice for weight-critical aerodynamic components.

Question 3

A gurney flap is a small vertical tab added to the trailing edge of a wing. What does it do?

Accepted Answer

Increases effective angle of attack and downforce without moving the entire wing

Answer

A gurney flap stalls the lower surface flow, effectively increasing camber and boosting downforce with minimal added drag.

Question 4

What is 'aero balance' in the context of car tuning?

Accepted Answer

The front-to-rear distribution of aerodynamic downforce

Answer

Aero balance describes how much total downforce acts on the front versus rear axle, critically affecting high-speed handling.

Question 5

Why do some racing-inspired builds use a 'ducktail' or short trunk spoiler instead of a tall wing?

Accepted Answer

They add downforce with less drag penalty than a high-mounted wing

Answer

A ducktail spoiler redirects rearward airflow at a low angle, generating modest downforce while keeping the drag increase small.

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