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1 module · 3 narrated lessons · 1 exploded view · 1 explorable

How a Jet Engine Works

Ride with the air through a turbofan as it is sucked in, squeezed, set on fire and blasted out the back.

Topic typed in: “How jet engine works?”

Lesson 2 of 3: Fire and Spin: The Combustor and Turbine · 1:48
Inside the Turbofan, the explorable simulation from this courseInside the TurbofanA parcel of air rides the whole engine on a test stand, station by station, with its temperature, pressure and speed worked out at each one. Push the throttle or add compressor stages and every station downstream is recomputed, down to the thrust.Open the live explorable (opens in a new tab)
  1. A frame from lesson 1, Sucking In and Squeezing: Intake, Fan, and Compressor

    1. Sucking In and Squeezing: Intake, Fan, and Compressor

    2:14 narrated video

  2. A frame from lesson 2, Fire and Spin: The Combustor and Turbine

    2. Fire and Spin: The Combustor and Turbine

    1:48 narrated video

  3. A frame from lesson 3, Blasting Out the Back: Thrust and Newton's Third Law

    3. Blasting Out the Back: Thrust and Newton's Third Law

    2:13 narrated video

Taken apart

Turbofan jet engine

Drag the slider to pull it apart, and select any part to read what it does. The parts outlined in dashes are drawn see-through so nothing behind them is hidden.

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Lift the nacelle straight up to expose the fan and core. Then work front to back along the centerline — fan, booster, high-pressure compressor, combustor, high-pressure turbine, low-pressure turbine, nozzle — and finally slide the concentric shaft pair out sideways from the hollow core.

Select a part, in the drawing or in the list, to read what it does.

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