Question

In which of the following terms the forces of aircraft must be considered?

(a) Aircraft weight, flight mach number, altitude

(b) Aircraft weight, airspeed, altitude, temperature

(c) Aircraft weight, flight mach number, temperature

(d) Aircraft weight, airspeed, altitude

I had been asked this question in examination.

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

Answer 1

Correct choice is (a) Aircraft weight, flight mach number, altitude

The best I can explain: An aircraft forces are described in terms of aircraft weight, flight mach number, altitude rather than in terms of aircraft weight, airspeed, altitude, temperature. In this the altitude becomes a basic variable of the aerodynamic forces.