Question

The net thrust of the powerplant is affected by ____________

(a) pressure and temperature

(b) altitude andtemperature

(c) temperature and mach number

(d) mach number and altitude

This question was posed to me in quiz.

I want to ask this question from Thrust Producing Power Plant topic in portion Aircraft Force Systems and the Equations of Motion of Aircraft Performance

Answer 1

Right answer is (d) mach number and altitude

Explanation: The net thrust of the powerplant is affected by mach number and altitude. As it is not possible to postulate precise function that will relate thrust and mach number and altitude, we develop simple relations that give us the characteristic variation of thrust along with the changes in mach number and altitude.