Reg No.:

Seventh Semester B.Tech Degree Regular and Supplementary Examination December 2021 (2015 Scheme)

Max. Marks: 100

1 a)
b)

2

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6 9)
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7

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10000ME461122003 Pages: 2

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Course Code: ME461
Course Name: Aerospace Engineering

PARTA
Answer any three full questions, each carries 10 marks.
Draw pressure distribution around an aerofoil in an inviscid flow?
Show angle of attack in a schematic of an 2D aerofoil. Sketch angle of attack
vs. coefficient of lift diagram
Comment on the importance of atmospheric conditions like temperature,
pressure and air density in route planning of an aircraft.
What is Drag Polar? Sketch the Drag Polar and indicate the coefficient of drag
due to zero lift?
How a finite wing can replace with a horse shoe vortex system?
Explain about wing load distribution. What is aspect ratio?
Compare the performance of monoplane and biplane for lift and drag.
PART ‏تا‎
‎Answer any three full questions, each carries 10 marks.
What are propeller coefficients? Obtain the general form of thrust coefficient,
torque coefficient, power coefficient. Explain the concept of airscrew.

Prove that the minimum thrust required for a steady and level flight will be
⋅ ⋅ ⋅ ⋅ ∠⋅ ⋅
obtained when the airplane is flying where (7) is maximum.

Draw the power available and power required curves of a) propeller driven
airplane b) jet propelled airplane.

What are the technical options available for take-off from warships? Comment
on the usage of rocket assisted take off.

Derive Breguet formula for range during cruise flight of an airplane and find the
condition for the maximum range for a jet propelled airplane?

How the total length of runway required is found? What is the radius of tightest

turn.

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Duration: 3 Hours

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