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Which of the following is correct for a typical glider?(a) Drag D = W*cos (gamma)(b) Drag D = W*arcsine (gamma)(c) Drag D = W(d) Drag D = Thrust TI had been asked this question in a job interview.My doubt stems from Flight Mechanics in section Performance and Flight Mechanics of Aircraft Design

Answer»

Correct answer is (a) Drag D = W*cos (gamma)

The EXPLANATION: Above EQUATION is used to provide information about drag of ATYPICAL glider. Drag can be given by, Drag D = W*cos (gamma) where, D is drag, W is WEIGHT of the glider and gamma is the GLIDE angle.



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