Question

What should be the value of thrust- to-weight ratio for a normal take-off so that the acceleration associated with the rate of climb is neglected?

(a) 0.1

(b) 0.2

(c) 0.3

(d) 0.4

The question was posed to me during an interview for a job.

This is a very interesting question from Climb and Descent Performance with Thrust-Producing Engines topic in portion Climb and Descent Performance of Aircraft Performance

Answer 1

The correct choice is (c) 0.3

To explain I would say: 0.3 must be the value of thrust- to-weight ratio for a normal take-off so that the acceleration associated with the rate of climb is neglected. This way the climb can be assumed with constant airspeed and mach number.