AIRCRAFT LANDING GEAR DOOR ACTUATION MECHANISM WITH INTEGRATED EMERGENCY ACTUATION ASSEMBLY

摘要

Landing gear doors may be opened in an emergency event, e.g., a failure of the normal landing gear actuation system that requires a gravity free-fall deployment. The retractable aircraft landing gear door actuation mechanism will include a landing gear door and a door support bracket attached to the landing gear door. The support bracket is attached to aircraft structure for pivotal movement about a pivot axis between a closed condition whereby the landing gear door covers an aircraft landing gear when retracted relative to the aircraft structure, and an opened condition whereby the landing gear door is moved laterally and upwardly relative to the aircraft landing gear when extended relative to the aircraft structure. A gear door actuation assembly is operatively connected to the door support bracket for moving the door support bracket and the gear door supported thereby between the closed and opened conditions thereof. The gear door actuation assembly will include an over-the-center spring assembly which assists in pivotal movement of the door support bracket and the gear door supported thereby from the closed condition into the opened condition thereof.

主权项

1. A retractable aircraft landing gear door actuation mechanism comprising:
a landing gear door; a door support bracket attached to the landing gear door, the support bracket being attached to aircraft structure for pivotal movement about a pivot axis between a closed condition whereby the landing gear door covers an aircraft landing gear when retracted relative to the aircraft structure, and an opened condition whereby the landing gear door is moved laterally and upwardly relative to the aircraft landing gear when extended relative to the aircraft structure; and a gear door actuation assembly operatively connected to the door support bracket for moving the door support bracket and the gear door supported thereby between the closed and opened conditions thereof, wherein the gear door actuation assembly includes an over-the-center spring assembly which assists in pivotal movement of the door support bracket and the gear door supported thereby from the closed condition into the opened condition thereof.