Thrust reverser door
View Patent ↗A thrust reverser door is provided, in one configuration, with a plurality of peripherally-disposed frames circumferentially spaced apart from one another and projecting radially inwardly on an interior side of the door to thereby provide a channel for redirecting thrust.
1. A thrust reverser comprising a door having two longitudinal sides and a plurality of longitudinally-extending frames adjacent each of said longitudinal sides, the frames disposed on an interior side of the door, the frames having circumferentially spaced apart walls projecting radially from the interior side of the door, the walls extending generally along at least a portion of a length of the longitudinal sides, the walls defining corresponding side channels circumferentially bounding a single primary channel therebetween which side channels are open on their radially inward sides, and the primary channel extends circumferentially over a majority of width of the door for increasing effective thrust reversing surface area of the door.
2. The thrust reverser as defined in claim 1 , wherein the walls are generally parallel to one another.
3. The thrust reverser as defined in claim 1 , wherein the walls extend from a leading edge of the door.
4. The thrust reverser as defined in claim 3 , wherein the walls join in a vicinity of the leading edge, a structural frame extending circumferentially along the door leading edge.
5. The thrust reverser as defined in claim 1 , wherein two said walls are provided adjacent each longitudinal side, the two walls defining one said channel.
6. The thrust reverser as defined in claim 1 , further comprising at least one additional longitudinally-extending frame pivotally connected to the longitudinally-extending frame closer to one of the longitudinal sides, the additional frame being pivotable between a retracted position and an extended position, the additional frame having at least partially a radial height when in its extended position that is greater than a radial height of said plurality of frames.
7. The thrust reverser as defined in claim 6 , wherein the additional frame is pivotable around a pivot axis that is substantially parallel to the longitudinally-extending frame closer to one of the longitudinal sides.
8. The thrust reverser as defined in claim 6 , wherein the additional frame is pivotable around a pivot axis that is substantially transverse to the longitudinally-extending frame closer to one of the longitudinal sides.
9. The thrust reverser as defined in claim 1 , wherein the longitudinal frame closer to one of the longitudinal sides has a greater height than a remainder of the plurality of frames.
10. The thrust reverser as defined in claim 1 , wherein each longitudinally-extending frame has a height greater than a width thereof.
11. The thrust reverser as defined in claim 1 , wherein at least some of the longitudinally-extending frames vary in height along a length thereof.
12. A thrust reverser comprising at least first and second doors movable between a stowed position and a deployed position, the doors defining a leading edge and two longitudinal sides extending therefrom and having an inner side with a thrust-deflecting surface redirecting engine thrust when the doors are in the deployed position, the inner side defining a plurality of channels open to the inner side of the doors and including one side channel extending along at least a portion of each longitudinal side of the doors and circumferentially bounding a single primary channel extending circumferentially over a majority of width of each door for increasing effective thrust reversing surface area of the doors.
13. The thrust reverser as defined in claim 12 , wherein each channel is defined by a pair of radially extending walls.
14. The thrust reverser as defined in claim 12 , wherein each channel has a depth which varies along its length.
15. The thrust reverser as defined in claim 12 , wherein the channels end in a vicinity of the leading edge, a structural frame extending circumferentially along the door leading edge.
16. The thrust reverser as defined in claim 12 , wherein the portion of the channel extending along each of the longitudinal sides has a greater height than other portions of the channels.
17. A method of redirecting engine thrust, the method comprising the steps of: (a) deploying a door in a thrust flow to provide thrust redirection, the door having a leading edge and longitudinal sides extending from the leading edge, said redirection having a primary flow in a forward direction toward the leading edge in a primary channel extending circumferentially over a majority of width of the door, and at least one secondary flow in a lateral direction towards said longitudinal sides; and then (b) further redirecting said at least one secondary flow towards the leading edge in a side channel extending along one of said longitudinal sides laterally bounding said primary channel for increasing effective thrust reversing surface area.
18. The method as defined in claim 17 , wherein said further redirecting includes redirecting along said longitudinal sides to said leading edge.
19. The method as defined in claim 17 , wherein said side channel is defined by a pair of spaced apart walls, and wherein the method further comprises structurally stiffening the door using the walls.
20. A method of providing a thrust reverser door, the method comprising the steps of: providing a door skin having at least a leading edge and two longitudinal edges extending therefrom; providing a radially-inwardly-extending structural frame extending along at least a portion of each longitudinal edge; and providing an aerodynamic wall extending along the structural frame, with said frames and wall defining corresponding side channels along each of said longitudinal edges laterally bounding a single primary channel extending circumferentially over a majority of width of the door for reducing side spillage of exhaust flow and increasing effective thrust reversing surface area.
21. The method as defined in claim 20 , wherein the side channel is defined between the aerodynamic wall and the structural frame, the side channel extending uninterruptedly to the leading edge of the door.
22. A thrust reverser comprising:
a pair of thrust reverser doors pivotally mounted to a jet pipe for movement between stowed closed and deployed open positions;
each of said doors extending between longitudinally opposite leading and trailing edges, and including two pairs of circumferentially outer and inner longitudinal walls bounding circumferentially opposite sides of each door;
said wall pairs extend radially inwardly from each door and longitudinally aft from said leading edge thereof to define corresponding side channels bounding a single primary channel extending in circumferential width between said inner walls and open radially inwardly for increasing effective thrust reversing surface area and reducing side spillage of exhaust flow; and
wherein said inner walls are spaced circumferentially apart over a majority of width of said doors to correspondingly maximize circumferential width of said primary channel for increasing effectiveness of thrust reverser operation.
23. A thrust reverser according to claim 22 wherein said outer and inner walls extend continuously aft together so that said side channels are longitudinally uninterrupted to circumferentially bound said primary channel.
24. A thrust reverser according to claim 23 wherein said outer and inner walls are joined to a circumferentially arcuate radial wall at said door leading edges.
25. A thrust reverser according to claim 23 wherein said outer walls are larger in height than said inner walls to circumferentially bound said side channels over the longitudinal length thereof.
26. A thrust reverser according to claim 23 wherein said doors are circumferentially arcuate, and said outer and inner walls extend longitudinally straight along said opposite circumferential sides thereof.
27. A thrust reverser according to claim 23 further comprising a longitudinal third wall disposed between said outer and inner walls in one of said side channels for adjusting effective thrust reverser width of said doors.
28. A thrust reverser according to claim 27 wherein said third wall is adjustably mounted in said one side channel.