Question

What measures are taken to maintain precise control of flight path gradient?

(a) Elevator settings alone

(b) Thrust settings alone

(c) Elevator and thrust settings

(d) Flap settings

I had been asked this question in unit test.

This intriguing question comes from Descent Performance in Aircraft Operations in section Climb and Descent Performance of Aircraft Performance

Answer 1

Correct answer is (c) Elevator and thrust settings

To explain I would say: The precise control of the flight path gradient is achieved by the changes in the thrust of the flight along with the elevator control inputs given to the system during the gradient of descent of the aircraft.