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A prop-driven aircraft having fuel weight of 650kg. Now, aircraft is taxing on runway, after which it has fuel fraction of 0.975. Determine fuel used during taxing of aircraft, if W0 = 5000kg.

A prop-driven aircraft having fuel weight of 650kg. Now, aircraft is taxing on runway, after which it has fuel fraction of 0.975. Determine fuel used during taxing of aircraft, if W0 = 5000kg. Correct Answer 125kg

Given, Aircraft take-off gross weight W0 = 5000kg, Fuel weight fraction after taxi = Wtaxi/W0 = 0.975 Here, there is no provision of reserved fuel is mentioned. So, we are neglecting reserve fuel fraction. Now, from fuel fraction method, Used fuel weight fraction is Wf /W0 = 1 – (Wtaxi/W0) = 1 – 0.975 = 0.025 Hence, fuel used during taxing mission = Wf = W0 * 0.025 = 125kg.

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