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If thrust loading is 0.65 then, find the power loading of a prop aircraft. Consider propeller is idle.(a) 846.15/V(b) 846.15(c) 650(d) 6.5The question was asked in an interview.Origin of the question is Thrust Weight Ratio-1 topic in division Thrust-Weight Ratio and Wing Loading of Aircraft Design

Answer» RIGHT option is (a) 846.15/V

To EXPLAIN I would say: Given, prop AIRCRAFT, thrust LOADING T.L. = 0.65

Since propeller is idle, propeller efficiency ƞ=1. Here, velocity is not mentioned so we will SUBSTITUTE it as V.

Now, thrust loading is given as,

T.L. = T/W = (550*η / V)*(hp/W)

Hence, power loading W/hp = PL = 550*η / (T.L.*V) = 550/(V*0.65) = 846.15/V.


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