Advance Aerodynamics — Summer 2023

Enlist the applications of hypersonic flow.

Define aero thermodynamics and its need to study in the aviation.

With a neat sketch explain the important physical phenomena associated with hypersonic flight.

What is Mach number independence?

Derive the expression of pressure ratio following Basic hypersonic shock relations.

What are the characteristics of supersonic airfoils? Draw and explain the variation in linearized pressure coefficient with Mach number varies from subsonic to supersonic range.

What is Newtonian flow model? How the centrifugal force corrections are applied to the basic Newtonian theory.

What is aerodynamic heating? What are its aerodynamic effects during the flight?

Explain the shock over a blunt body at hypersonic speed.

Derive the hypersonic shock relation in terms of hypersonic similarity parameters.

What is the importance of Rayleigh flow and Fanno flow?

Write a shot note on shock expansion method for in a view of hypersonic flow over a body.

What are compressibility corrections? When they are applied to the flow?

Apply the Prandtl-Glauert Compressibility correction and derive the expression of Cp.

What is the difference between the subsonic airfoils, supersonic airfoils and supercritical airfoils?

Write a short note on Newtonian sine-squared law.

What is the basic difference between tangent-wedge method and tangent-cone method when applied to the 2-Dbody?

Derive linearized supersonic pressure coefficient formula.

With neat sketch explain Area Rule.

Define critical Mach number and drag divergence angle.

Discuss in short “wave rider”.1

Consider a supersonic and hypersonic flow over a sharp pointed body where attached shock is formed. Draw and explain shock reflection pattern over the body following shock expansion theory.

State and explain modified Newtonian law.

What is entropy layer and what are its effect on the body?

Derive L/D = Cotα equation for flat plate using aerodynamic forces.