Abstract: An actuation activation system for an aircraft engine thrust reverser system is provided including an improved locking actuator (29), a sleeve sensor mechanism, and auto-restow control logic. The locking actuator (29) includes a lever (57) corresponding to whether the actuator is locked or unlocked. A slide-by first proximity sensor (45) is positioned near the lever and set to normally far and triggering near. The first proximity sensor produces a first trigger signal for use in the auto-restow control logic. The sensor mechanism includes a second slide-by proximity sensor and a target in communication with a thrust reverser translating sleeve. The second sensor is connected to the forward side of an engine torque box. A preferred embodiment sensor mechanism (78) is provided and includes a pivotable target arm (96) having a proximal end (98), a distal end (100), and a middle portion pivotably connected to fixed engine structure, preferably torque box (30).

Abstract: An actuation activation system for an aircraft engine thrust reverser system is provided including an improved locking actuator (29), a sleeve sensor mechanism, and auto-restow control logic. The locking actuator (29) includes a lever (57) corresponding to whether the actuator is locked or unlocked. A slide-by first proximity sensor (45) is positioned near the lever and set to normally far and triggering near. The first proximity sensor produces a first trigger signal for use in the auto-restow control logic. The sensor mechanism includes a second slide-by proximity sensor and a target in communication with a thrust reverser translating sleeve. The second sensor is connected to the forward side of an engine torque box. A preferred embodiment sensor mechanism (78) is provided and includes a pivotable target arm (96) having a proximal end (98), a distal end (100), and a middle portion pivotably connected to fixed engine structure, preferably torque box (30).

Abstract: A fire seal (52) for an aircraft propulsion system including at least one mating plate pair (54) formed between a nozzle body (44) and an outer structure (24) and a support pylon (26). The mating plate pairs (54) each include an upper plate row (58) and a lower plate row (60), both rows extending in an arc (66) about an upper region (56) of the propulsion system, with a vertical overlap (88) existing between the upper and lower plate rows. A gap (90) exists between the upper plate row (58) and lower plate row (60) of each mating plate pair (54), preferably at all times. A seal region (62) exists between the forward-most mating pair and the aft-most mating pair. A pressure equalization mechanism controls pressure between the area forward of the seal region (62) and the area aft of the seal region (62). A number of endplates (110) are positioned at various longitudinal locations near the lateral ends of the mating plate pairs.

Abstract: A hinge (50) for a panel (26) allows movement of the panel (26) between a closed position inside a framed opening and an open position away from the opening. In an exemplary embodiment, the hinge (50) is used to attach a fan cowl panel (26) to a jet engine (20). To prevent loading the hinge (56) in an axial direction when the panel (26) is in the closed position, the panel (26) is movable axially along the hinge line (66). In the past this has resulted in the fan cowl panel (26) being misaligned during closure between the inlet cowl panel (22) and the thrust reverser cowl panel (24) resulting in damage to the fan cowl panel (26) and surrounding structure. The hinge (50) of the present invention automatically aligns a V-blade (38) of the fan cowl panel (26) with a V-groove (40) of the inlet cowl panel (22) during closure of the fan cowl panel (56) in order to overcome this misalignment problem.

Abstract: A vortex control device is designed for installation on the exterior surface of an aircraft nacelle in a position which does not compromise the optimum aerodynamic performance of the vortex control device. Existing cowling structure is bridged by this vortex control device which attaches only to movable structure and which is cantilevered over adjacent stationary structure. A resilient seal prevents air from swirling under the cantilevered portion, thus contributing to vortex generating efficiency and reduced aerodynamic drag.