Automotive Aerodynamics and Aesthetics — Winter 2023

Define Aerodynamics and explain the importance of it in automotive.

Draw and explain SAE aerodynamic axis system.

Explain External and Internal air flow through a moving vehicle with detail.

Explain relative air speed and pressure conditions over the upper profile of a moving car.

What is boundary layer? Explain (i) Lamina boundary layer (ii) Turbulent boundary layer.

Derive the formula for calculating the opposing resistance of a body passing though air.

Discuss the influence of skin friction, surface finish and a venturi on boundary layer velocity profile.

Draw the various shapes of solid and write the drag coefficient of each.

Describe various types of drag and lift control devices used in a car.

Draw the pictorial view of car having an ideal aero foil shape and discuss trailing vortex drag in detail.

Define Aerodynamic Drag and list out the various types of drag.

Explain the various types of car body configuration for afterbody drag.

Explain effects of underbody front and rear air dams relative to the lift and drag coefficient

Give the technical criteria for aesthetic design of exterior and interior.

Describe digital aesthetic design in brief.

Write a short note on wind tunnel testing.

What is coast down test?

Explain on-road measurement of the wind noise in short.

Explain the sequence of automobile aesthetic body styling process.

Briefly explain adjustable cab roof deflector.

Explain Yaw angle with velocity diagram.

Describe the various types of cab to trailer body gap seals with neat sketch.

What is the effect of various load position upon drag coefficient in truck?

Write a short note on corner vanes.

Explain the effects of different cab to trailer body heights with both sharp and round upper windscreen leading edges with neat sketch.