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koolaidman89 t1_j68upm9 wrote

Reply to comment by steruY in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944

That’s where fuel is dumped straight into the jet exhaust where it burns with oxygen that wasn’t consumed in the core of the engine. It functions like a rocket engine to generate additional thrust. Great for a burst of power but it consumes fuel very quickly and inefficiently.

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Dysan27 t1_j68ybmp wrote

and can only be used in short bursts.

The only engine ever designed to run on continuous after burner was the Pratt & Whitney J58 on the SR-71 afterburner. Though the J58 acts more as a ramjet with a turbojet stuck in the middle.

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