Afterburning

An afterburner is an additional combustion component used on some jet engines, mostly those on military supersonic aircraft. Its purpose is to increase thrust, usually for supersonic flight, takeoff, and combat. The afterburning process injects additional fuel into a combustor ("burner") in the jet pipe behind the turbine, "reheating" the exhaust gas. Afterburning significantly increases thrust and is used as an alternative to a larger, heavier engine. However, it increases fuel consumption and decreases fuel efficiency, which limits its use to short periods. This aircraft application of "reheat" contrasts with the meaning and implementation of "reheat" applicable to gas turbines driving electrical generators and which reduces fuel consumption.