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Fuel consumption during cruise is affected by wetted area.

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in Aircraft Design by (701k points)
Fuel consumption during cruise is affected by wetted area.

(a) True

(b) False

This question was addressed to me in an interview.

I want to ask this question from Conceptual Sketch Sizing topic in chapter Conceptual Sketch Sizing of Aircraft Design

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Correct option is (a) True

The best I can explain: Fuel conception or fuel fraction during cruise segment will be affected by the overall aerodynamic efficiency. The aerodynamic efficiency is ratio of lift and drag. Lift is directly affected by the wetted area, which affects L/D. As a result, it will affect fuel fraction during cruise mission phase.

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