ATPL Aero & Systems Practice Questions - CASA Airline Transport Pilot Licence (Aeroplane) - Aerodynamics & Aircraft Systems (AASA) Exam

What is the primary reason for incorporating wing sweepback on high-speed jet transport aircraft?

To increase the lift coefficient at low speeds and improve short-field takeoff performance. To eliminate spanwise flow and prevent wing tip stall at high angles of attack. To delay the onset of compressibility effects and increase the critical Mach number. To reduce structural weight by allowing for a narrower wing root spar.

Correct Answer:

To delay the onset of compressibility effects and increase the critical Mach number.

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