Question

The minimum sink rate is attained by flying at a relative airspeed of u/\(\sqrt[4]{3}\).

(a) True

(b) False

This question was posed to me during an online exam.

I'm obligated to ask this question of Climb and Descent Performance with Thrust-Producing Engines in division Climb and Descent Performance of Aircraft Performance

Answer 1

Right option is (a) True

For explanation I would say: The minimum sink rate is attained by flying at a relative airspeed of u/\(\sqrt[4]{3}\). At this airspeed the minimum power speed of aircraft is attained. Flying at this speed will maximize the time of gliding flight.