1.

A prop driven A/C has BHP/W as 0.08. If density ratio is 0.2 and take off lift coefficient is 3 then find take-off parameter for the aircraft. Given wing loading W/s = 35.(a) 700(b) 800(c) 900(d) 500This question was addressed to me in a national level competition.Query is from Wing Loading topic in portion Thrust-Weight Ratio and Wing Loading of Aircraft Design

Answer»

The correct ANSWER is (a) 700

To elaborate: Given, a prop Aircraft.

BHP/E = 0.08, DENSITY RATIO σ = 0.2, CL at take-off = 3.

Take-off parameter TOP = \(\frac{W/S}{σCL BHP/W}\) = 35 / (0.2*3*0.08) = 700.



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