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Which of the following pair is correct based on the empty weight fraction?

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Which of the following pair is correct based on the empty weight fraction?

(a) Flying boat-0.77, Jet trainer-0.65

(b) Flying boat-0.65, Jet trainer-0.77

(c) Flying boat-0.45, Jet trainer-0.65

(d) Flying boat-0.3, Jet trainer-1.0

I have been asked this question in homework.

My question is based upon Conceptual Sketch Sizing in portion Conceptual Sketch Sizing of Aircraft Design

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The correct choice is (a) Flying boat-0.77, Jet trainer-0.65

The explanation: Here, we need to think logically. The flying boat has more empty weight than the typical jet trainer aircraft. A flying boat needs to carry additional load of boat hull compare to a typical jet trainer aircraft.

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