A prop-driven aircraft is cruising with 90% propeller efficiency. If, – McqOptions

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1.	A prop-driven aircraft is cruising with 90% propeller efficiency. If, range of aircraft is 710⁶ ft, C=1.3810^-7 s^-1 and L/D = 14 then what will be the fuel weight fraction for the cruise?
A.	0.9216
B.	0.9261
C.	0.9289
D.	0.9365
Answer» C. 0.9289

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