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A glider has aspect ratio of 20 and CD0 of 0.02. In order to attain maximum range, determine the value required aerodynamic efficiency. Take e as 1.(a) 28.02(b) 20(c) 30(d) 43This question was addressed to me in my homework.My doubt stems from Flight Mechanics topic in section Performance and Flight Mechanics of Aircraft Design

Answer»

Correct ANSWER is (a) 28.02

To explain: AERODYNAMIC efficiency= 0.5*(π*E*aspect ratio/CD0)^0.5

= 0.5*(π*1*20/0.02)^0.5 = 28.02.



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