Question

If my glider has lift coefficient at maximum lift to drag as 1.5 and induced drag factor K is 0.007 then, find parasite drag coefficient.

(a) 0.01575

(b) 0.01 N

(c) 0.02N

(d) 0.0157N

This question was posed to me by my college director while I was bunking the class.

I would like to ask this question from Flight Mechanics topic in division Performance and Flight Mechanics of Aircraft Design

Answer 1

The correct choice is (a) 0.01575

For explanation I would say: Parasite drag coefficient = K*lift coefficient^2 = 0.007*1.5*1.5 = 0.01575.