Question

If sum of potential and kinetic energy of an aircraft is 5000 unit and aircraft weighs around 1200 unit then, determine specific total energy.

(a) 4.16 unit

(b) 2.89 unit

(c) 40

(d) 10.8

I have been asked this question in an internship interview.

I'm obligated to ask this question of Flight Mechanics in division Performance and Flight Mechanics of Aircraft Design

Answer 1

The correct answer is (a) 4.16 unit

To explain I would say: Specific total energy = total energy/weight

= 5000/1200 = 4.16 unit.