10

11

12

13

14

b)

(a)
(b)

(a)
(b)

a)
b)

a)
b)

(a)

(b)

G192175 Pages:2

Draw the variation of zero lift power requirement, lift induced power

requirement and Net power requirement for a level unaccelerated flight

Calculate the maximum rate of climb of an aircraft of mass 36000൨. flying at
200m/s at 6km altitude. The coefficient of parasitic drag is 0.002. The Oswald
efficiency factor for the flight is 0.85, span 73.8m, wing area 688m’, the flight
is powered by four turbojet engines, each producing 30011 thrust at this

altitude.

Derive the expression to find out the length of ground roll required for a lift off.
With help of a schematic explain the variation of forces acting on an aircraft

during landing

PART C
Answer any four full questions, each carries 10 marks.

Distinguish between ‘mass’ balance and ‘aerodynamic’ balance.

Explain the working of air temperature indicator.

Explain the working of vertical speed indicator

How aerodynamic balancing of control surfaces are done in aircrafts?

How sstability is maintained in aircrafts? Explain how control surface

deflections influence Roll, Pitch and Yaw of an aircraft.

With the help of neat sketch explain the working of Turbojet engine

What are the uses of wind tunnels?

Explain the working of a Supersonic wind tunnel.

What is meant by escape velocity? Derive the expression. Calculate its
approximate value for the earth?

Sketch and explain a wind tunnel balance.

Page 2of 2

(3)

(10)

(7)
(3)

(6)
(4)

(7)
(3)

(10)

(10)

(3)
(7)

(6)

(4)