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US 5,209,432 AGranted
Aircraft reverser port door
AssigneeUnited Technologies Corporation
InventorsGary D. Roberge, Edward B. Thayer
Life of this patent
Estimating the term…
Abstract
Doors sealing radial flow ports are opened by rotation which slides the doors away from the ports. All doors rotate about a longitudinal centerline of the aircraft. Each flow port has its inlet seal surface with a center of curvature offset from the longitudinal axis. Rotation of the door toward the open position relieves and releases contact between the door and the port inlet seal surface.
Claims6
A port door assembly for an aircraft having a gas turbine engine comprising:
- a circular gas turbine exhaust passage;
- a plurality of reverser ducts extending outwardly from said exhaust passage, each duct having an inlet port with a surrounding inlet port structure;
- an arcuate door disposed at each inlet port and circumferentially movable away from said port around a door center of rotation at the axial centerline of said exhaust passage;
- an arcuate peripheral duct seal surface on the port structure surrounding each port, having two linear sides and two arcuate sides, the center of curvature of each arcuate side being offset from said center of rotation in the direction of door movement to open said duct, whereby said door has increasing clearance from said seal surface as said door rotates toward the open position.
1 more element
A port door assembly for an aircraft having a gas turbine engine comprising:
- a circular gas turbine exhaust passage;
- a plurality of reverser ducts extending outwardly from said exhaust passage, each duct having an inlet port with a surrounding inlet port structure;
- an arcuate door disposed at each inlet port and circumferentially movable away from said port around a door center of rotation at the axial centerline of said exhaust passage;
- an arcuate peripheral duct seal surface on the port structure surrounding each port, having two linear sides and two arcuate sides, the center of curvature of each arcuate side being offset from said center of rotation in the direction of door movement to open said duct, whereby said door has increasing clearance from said seal surface as said door rotates toward the open position further comprising each of said ducts having an inlet port located in a common plane perpendicular to said axial centerline.
1 more element
Dependencies are inferred from the claim text.