Practice Module 11 — Aeroplane Aerodynamics, Structures & Systems Questions
Try 3 free questions from the EASA Part-66 Module 11 — Aeroplane Aerodynamics, Structures & Systems exam. Covers flight controls, hydraulics, pneumatics, fuel, electrical power, and ice protection.
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Question 1 of 3 — Section 11.1
Buffet at high altitude can occur when the aircraft is between
Explanation: At high altitude the low-speed stall (lack of lift) and high-speed buffet (shock-induced separation) converge, narrowing the safe speed range — coffin corner.
Question 2 of 3 — Section 11.1.2
What is the definition of Critical Mach Number (Mcrit)?
Explanation: Critical Mach is the freestream Mach number where local flow velocity first reaches sonic conditions (M=1) somewhere on the aircraft surface, typically on the upper wing surface.
Question 3 of 3 — Section 11.10
Fuel booster pumps are used to
Explanation: Booster pumps ensure positive fuel pressure to the engine-driven pumps, preventing vapour lock at altitude where low ambient pressure could cause fuel vaporisation.
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