Patent ID: 6151884
Filing Date: 2000-11-28
Classification: F02K

Abstract:
In a bypass turbofan turbojet engine thrust reverser including pivoting doors which in their closed position during forward thrust operation conform with an outer wall of a flow duct at the rear of the turbofan and which when pivoted by actuators constitute flow-deflecting baffles during reversed thrust operation; fixed longitudinal beam elements separating the doors circumferentially, each door including at its upstream end, a door spoiler movably attached to the door; and a spoiler movement control device arranged such that, in the closed position of the door, the spoiler is retracted and in the fully open position of the door during the thrust reversed mode, the spoiler is moved relative to the door and projected into the deflected flow stream from the upstream end of the door, the improvement comprising:said spoiler movement control device including at least one actuator element arranged so as to control the motion of the movable spoiler relative to the upstream end of the door while the door is moved towards its open position so that the spoiler maintains an inactive retracted position during a first opening phase of the door motion and so that upon the door approaching its end of travel towards a thrust reversed position, the spoiler is driven to an extended position into the deflected flow stream.