Question

Thrust loading during flight does not remain constant as _____

(a) fuel burns with each mission phase

(b) fuel is not burned at all

(c) will not change

(d) lofting is changed

The question was posed to me during an interview.

Question is taken from Thrust Weight Ratio-1 in chapter Thrust-Weight Ratio and Wing Loading of Aircraft Design

Answer 1

The correct option is (a) fuel burns with each mission phase

To explain: Thrust loading is generally measured based on take-off conditions. At each phase of mission profile weight will vary. Fuel burns throughout the flight which varies aircraft weight and which changes thrust loading as well.