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

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Which of the following occurs as a primary result of the formation of a normal shockwave on the upper surface of a wing?

The local airflow behind the shockwave becomes supersonic and static pressure drops. The local airflow behind the shockwave becomes subsonic, static pressure increases, and density increases. The boundary layer becomes thinner and re-attaches to the wing surface. The total pressure behind the shockwave increases significantly due to compression.

Correct Answer:

The local airflow behind the shockwave becomes subsonic, static pressure increases, and density increases.

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