Aircraft Design — Summer 2023

Give brief classification of fixed wing aircrafts.

Differentiate between Expandable and Non Expandable Payloads.

Briefly explain conceptual design process of any fixed wing aircraft.

Define loiter. Shortly explain method to find Fuel fraction while loiter.

Differentiate between fuel fraction and structure factor.

Briefly explain process of determining of fuel fraction.

Briefly explain method to determine wing loading of any fighter jet.

Define Centre of Pressure, Neutral point, Centre of Gravity.

What is Geometric Aerodynamic Centre? What is role of GAC to find tail sizing?

Explain method to determine Thickness / Chord ratio of any airfoil. How does this ratio affect cruise speed and critical angle of attack?

Shortly explain how will you locate wing on fuselage layout?

Differentiate between layout and lofting.

How will you decide tail plan form shape of any fixed wing aircraft?

Explain advantage of flat wrap fuselage lofting.

Discuss any two considerations required for make a supersonic aircraft aerodynamically efficient.

How will you verify wing lofting of a tapered wing?

Explain various applications of circle to square adaptors in aircraft design.

Explain any two method of designing to minimize production cost of wing.

What is crashworthiness? Which considerations will you take with respect to crashworthiness?

How will you determine size of main wheels and nose wheels of a tricycle landing gears?

With neat sketch explain any one type of landing gear retraction geometry of a conventional jet transport aircraft.

Enlist and explain design considerations of a sea plane with neat sketch.1

Shortly explain importance of an approximate group weight method.

With neat sketches explain function of oleo type suspension mechanism.

With neat sketch explain geometry of castoring of nose wheel and tail wheel.