Reverse thrust

Reverse thrust is the application of high engine power on an aircraft after touchdown, thrusting against vanes at the back of the engine. This directs the jet exhaust forwards, to reduce stopping distance and reduce brake wear.

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  Thrust reversers clearly visible at the back of a Fokker 70 engine after touchdown
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  Reverse thrust operating on a KLM Fokker 70
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  Thrust reverser on a Rolls Royce/Turbo Union RB.199 engine
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  Thrust reverser on a Rolls Royce/Turbo Union RB.199 engine