If a Maneuver requires specific power of 1200 unit then, find the approximate value of fuel specific energy. Given thrust as 1000 unit and tsfc of 0.00042 unit.

A)
1568.45 unit
B)
2857.14 unit
C)
4500 unit
D)
6789 unit

Correct Answer :   2857.14 unit

Explanation : Fuel specific energy = specific power / (thrust*tsfc)
= 1200/1000*0.00042 = 2857.14 unit.

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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