Just Another Four Cycle

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Cried the first stage fan

With a scimitar grind upon its edge

Separating the inrush of airflow

Dividing and conquering all in one fell blow

Some of the air tumbles into the first stage vanes

Entering the dark of the engine core

To be compressed further

Stage upon stage

Until it can be squeezed no more

Whereupon it is injected with high pressure fuel

And lit on fire

Causing it to roar in agony

Tension within now tight as a wire

Hot gasses sent on out the nozzle guide vanes

Into the turbine section

Pushed on by hot gas and flames

A couple stages to drive the second stage compressor core

Then one or two more

To spin the first stage of compression

And begin the process once again

But wait

Wasn't there some additional air?

Back when I said that 'some' went into the core?

Yes, quite right.

That's the bypass air

Providing ninety percent of the thrust

But it's much more exciting to talk about what happens in the core

Don't you think?

And that's how a jet engine works

All happening in the time it takes to blink