Patent ID: 6151886
Filing Date: 2000-11-28
Classification: F02K

Abstract:
A bypass turbojet-engine thrust reverser for a turbojet engine including a flow conduit having a longitudinal axis, a stationary structure having an upstream portion (6) with a fore frame (8), a downstream portion (7) and at least one stationary longitudinal beam connecting the upstream and downstream portions (6, 7), and an external cowling, the thrust reverser comprising:at least one displaceable hollow door (3) which is pivotable about a door pivot (9) by a displacement control system between a closed position in a forward-thrust mode and an open position in a thrust-reversal mode, the door (3) including an outer structure (4) which constitutes part of the external cowling when the door is in the closed position, an inner conduit (10) and an upstream edge, wherein when the door (3) is in the open position the door (3) opens a passage in the external cowling, the upstream edge extends into the flow conduit to constitute at least one flow deflecting baffle, and the conduit acts as a scoop for at least part of the deflected flow; anda displaceable external cowling panel (20) including a downstream portion (21), an upstream portion (22) and two sides (23) linking the upstream and downstream portions (21, 22) so as to form a central aperture in the cowling panel (20) corresponding to the passage, the cowling panel (20) being pivotable on a panel pivot (24) situated downstream of the door pivot (9) between a first position in the forward-thrust mode, in which the cowling panel (20) covers the fore frame (8) and a flow exhaust cross-section of the inner conduit (10) of the door (3) with the outer structure (4) of the door (3) situated within the central aperture to close the passage, and a second position in the thrust-reversal mode, in which an upstream edge of the cowling panel (20) is moved radially outward relative to the longitudinal axis of the flow conduit such that space is cleared above both the fore frame (8) and the exhaust cross-section of the inner conduit (10) for the deflected flow.