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SESK: Stuff Everyone Should Know · sesk.info/aero-jet-exhaust-thrust

What do fast exhaust gases create as they leave a jet engine?

They create forward thrust.

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  1. Thrust ✔
  2. Weight
  3. Lift

Why: The engine accelerates hot gases rearward through the tailpipe. The opposite reaction pushes the engine and airplane forward.

Huh, didn't know that: Some jet energy first turns the turbine that keeps the compressor spinning.

The dad joke
The exhaust left quickly because it had places to jet.
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References

Answer: Thrust. The engine accelerates hot gases rearward through the tailpipe. The opposite reaction pushes the engine and airplane forward.

  1. Aerospace Dimensions Module 2: Aircraft Systems and Airports akwg.cap.gov/media/cms/Module_2__Aircraft_Systems_and_Airp_1A4CD2C6AF085_eae81.pdf
    The remaining hot gases are expelled through the tail pipe, creating thrust.
    Checked 2026-10-10.

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