Find the approximate value of climb angle if Thrust is 1500N, drag is 1000N and weight of the aircraft is 2500N.

A)
1 degree
B)
11.53 degree
C)
30 degree
D)
40 degree

Correct Answer :   11.53 degree

Explanation : Given, steady climb, Thrust=1500N, drag D=1000N, weight W=2500N.
Climb angle = arcsine [{T-D}/W] = arcsine [{1500-1000}/2500] = 11.53 degree.

Recently Updated in Aircraft Design Questions
If stall speed is 120 knots then, find average velocity at flare.
A)
110.25
B)
125.4
C)
137.5
D)
147.6

Correct Answer : Option (D) :   147.6

Explanation : Average velocity at Flare = 1.23*stall speed = 1.23*120 = 147.6 knots.

Find the approach speed for military aircraft. Considered stall speed is 22unit.
A)
12 ft
B)
20 m
C)
26.4 unit
D)
45 unit

Correct Answer : Option (C) :   26.4 unit

Explanation : For military aircraft, Approach speed = 1.2*stall speed = 1.2*22 = 26.4 unit.

For military aircraft touchdown speed is 100 knots then, approximate value of stall speed.
A)
90.90
B)
100
C)
200
D)
223

Correct Answer : Option (A) :   90.90

Explanation : Stall speed = touchdown speed/1.1 = 100/1.1 = 90.90.

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