Canopy-type aircraft cargo door and actuating mechanisms

摘要

Actuating mechanisms (39, 40, 44) for an aircraft door (34) mounted along its upper edge to the body (36) of an aircraft (25) for movement into and out of a door opening (35) in the fuselage (29). The hinge actuating mechanisms (39) include a drive unit (46) and linkage assembly (50, 51) secured to the body (36) with all actuating components (45, 46, 48-51) mounted on the door (34) and positioned so that all actuating components move outwardly and upwardly to points outboard of an above the opening (35) except for actuating links (51) which pass through the upper corners of opening (35), thus defining an esentially unobstructed clearance area for passage of cargo. The latch cam assembly (40) employs a single actuator (90) for pulling door (34) to a fully closed position and for latching/unlatching a plurality of bottom latches (99, 100) and a pair of mid-span latches (42, 109). The mechanism (40) is sequenced to cause the latches (42, 99) to dwell in their unlatched condition while hooks (92) pull the door (34) into its fully closed position. The actuating mechanism (44) is normally biased open by vent door (83) biasing means (84). Essentially all actuating components are mounted on and carried by the door (34) and may be actuated from the exterior of the aircraft (25) by actuation of a master latch/lock control mechanism (56) on the undersurface of the fuselage (29).