Question

The minimum drag speed and minimum power speed are related by ___________

(a) \(\sqrt[4]{3}\)

(b) \(\sqrt[4]{2}\)

(c) \(\sqrt[2]{3}\)

(d) \(\sqrt[3]{3}\)

The question was posed to me in semester exam.

The above asked question is from Minimum Power Speed in chapter Aircraft Force Systems and the Equations of Motion of Aircraft Performance

Answer 1

Right choice is (a) \(\sqrt[4]{3}\)

The best I can explain: The minimum drag speed and minimum power speed are related by \(\sqrt[4]{3}\) i.e. 1.316. The minimum drag speed multiplied by the factor \(\sqrt[4]{3}\) i.e. 1.316 gives the minimum power speed.