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An aircraft has Crew and payload of 180kg. It has empty weight fraction of 0.48 and fuel weight is 0.7 times empty weight. What will be the gross weight of aircraft?

An aircraft has Crew and payload of 180kg. It has empty weight fraction of 0.48 and fuel weight is 0.7 times empty weight. What will be the gross weight of aircraft? Correct Answer 2157lb

Given crew and payload = 180kg, Empty weight fraction We / W0 = 0.48 Fuel weight is 0.7 times empty weight. Hence, Wf = 0.7*We Hence, Wf / W0 = 0.7*We / W0 = 0.7*0.48 = 0.336 Gross weight of aircraft is, W0 = Wcrew + Wpayload + Wfuel + Wempty By re-arranging, W0 = Wcrew + Wpayload / = 180 / = 978.26kg = 2157.06lb.

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