THRUST REVERSER ACTUATION SYSTEM
Located at the back of the engine, the Thrust Reverser of a pneumatic, hydraulic or electronic motor jet engine essentially closes the exhaust and diverts the thrust forward to stop the plane. In forward motion, the thrust comes in the intake and out the exhaust. In the stop motion, the thrust comes in the intake and since the exhaust is closed, the Thrust Reversers force the thrust to go back out the intake causing the plane to stop. There are four flexible shafts that synchronize and connect the actuators which open both halves of the thrust reverser. There are two other flexible shafts used in the Trans Cowl Lock which keep the Thrust Reverser Actuation System from deploying while in flight.