Final answer:
Reverse thrust is a method used by aircrafts to decelerate through reversing the direction of engine thrust. It's more used on the ground when landing. In the air, its use is limited due to potential damages it can cause.
Step-by-step explanation:
Reverse thrust is a flight term that refers to a method employed by aircraft to decelerate. This is accomplished by momentarily reversing the direction of engine thrust. Typically, it's limited and carefully monitored due to the potential damages or dangers it can pose. On the ground, reverse thrust is extensively used during landing to slow down an airplane faster and reduce wear on the brakes.
However, in the air, its use is far more limited. This is because using reverse thrust while an aircraft is still airborne can expose the plane's fuselage to jet blast, damaging the structure, or adversely affecting control of the aircraft. Keeping negative velocity to a minimum in the air is crucial, so reverse thrust is typically turned on only after touchdown, to slow the aircraft and eventually bring it to a stop.
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