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Wing sweep is used to ____

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in Aircraft Design by (701k points)
Wing sweep is used to ____

(a) increase critical mach number

(b) decrease critical mach number

(c) increase lofting

(d) increase drafting

The question was asked during an interview.

This is a very interesting question from Wing Geometry-2 topic in division Airfoil and Geometry Selection of Aircraft Design

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Best answer
Correct choice is (a) increase critical mach number

The best explanation: If wing is at some finite angle from fuselage reference line then it is called wing is sweep by that much degree. Main function of sweep is to increase critical mach number. Lofting is skin modelling and drafting is drawing phenomena.

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