SAR-66 Module 16 Practice Questions - CAAS SAR-66 AML Module 16 - Piston Engine (MCQ) Exam

What is 'detonation' in an aircraft piston engine, and what causes it?

Uncontrolled, instantaneous explosive burning of the unburned fuel-air mixture ('end gas') caused by excessively high cylinder temperature and pressure Ignition of the fuel-air mixture prior to the timed spark plug discharge Slow, incomplete burning of fuel inside the exhaust muffler Failure of the spark plug to fire on one cylinder

Correct Answer:

Uncontrolled, instantaneous explosive burning of the unburned fuel-air mixture ('end gas') caused by excessively high cylinder temperature and pressure

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