At what place in or near the jet engine is gas moving the fastest relative to the flying airplane?
A) In the air flowing into the engine's inlet duct.
B) In the plume of exhaust gas flowing out of the engine's outlet duct.
C) In the engine's turbine section.
D) In the engine's compressor section.

Question

Quizplus · Accepted Answer

In a jet engine, the exhaust gas flowing out of the engine's outlet duct is accelerated to the highest velocity to produce thrust, according to the principle of jet propulsion. This makes the exhaust plume the location where gas is moving the fastest relative to the airplane.

At What Place in or near the Jet Engine Is