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Relative airspeed acts as a shaping factor.(a) True(b) FalseThis question was addressed to me by my college director while I was bunking the class.This is a very interesting question from Cruise Method 1 topic in section Cruising Performance of Aircraft Performance

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Right choice is (a) True

For explanation I would say: Relative airspeed acts as a shaping FACTOR. Relative airspeed is given by \(\Big\{\frac{2u^3}{u^4+1}\Big\}\) where u is relative airspeed. The RANGE equation in cruise method 1 is given by R1=\(\Big[\frac{V_{mdi}}{C}E_{max}\Big]\Big\{\frac{2u^3}{u^4+1}\Big\}\)lnω where V is true airspeed, C is specific fuel consumption, L is lift, D is drag, Emax is endurance, u is relative airspeed and ω is fuel RATIO.



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