Reg No.:

10000ME461122001 Pages: 2

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Seventh Semester B.Tech Degree Examination (Regular and Supplementary), December 2020

Max. Marks: 100

1 a)
b)
2 ஐ
b)
3 a)
b)
4 ஐ
b)
5 a)
b)
6 ஐ
b)

Course Code: ME461
Course Name: Aerospace Engineering

PARTA

Answer any three full questions, each carries 10 marks.
Mark the extent of the different regions of Earth’s atmosphere in a schematic
diagram.
Explain the characteristics of different regions of Earth’s atmosphere with
respect to Temperature, Pressure and Density.
Demonstrate the use of the ‘Buckingham Pi’ theorem in dimensional analysis
through the expression for lift force, L, generated by an aerofoil.
Explain 2D aerofoils nomenclature with neat figure.
What are different aerodynamic methods for induced drag reduction?
Explain what is meant by elliptical lift distribution. Give one practical example.
Explain the theoretical procedure for replacement of finite wing by horse shoe
vertex system. What is the purpose of the process?
An aeroplane has a weight of 2500kg and span 15m. If it is flying at a speed of
150kmph determine the induced drag of the aeroplane. Assume sea level
conditions for the flight.

PART ‏تا‎

Answer any three full questions, each carries 10 marks.
What are the 3 different types of propellers based on the pitch setting
arrangement? Explain each type.
Define advance ratio of a propeller. Explain the significance of advance ratio.
Define Thrust required and Thrust available for aircrafts at conditions of level,
un accelerated flight.
A jet aircraft weighing 9000kg has a wing span of 16m and wing area 30 square
meter. Determine the power required by the aircraft if it is flying at 250m/s.
Assume: Level flight without acceleration, mean sea level conditions, parasite

drag coefficient 0.02 and Oswald efficiency factor 0.8.

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Duration: 3 Hours

Marks

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