Power plants – Reaction motor – Interrelated reaction motors
Patent
1977-06-28
1979-04-03
Garrett, Robert E.
Power plants
Reaction motor
Interrelated reaction motors
60230, 23926537, F02K 120, F02K 304
Patent
active
041470273
ABSTRACT:
A thrust reverser nozzle for coaxial-flow turbofan engines comprising target-type deflector doors which are hinged for deployment about a fixed axis by means of actuation about single fixed pivots mounted on support structure on either side of the engine nacelle rearward portion. The deflector door's outer surfaces are shaped to match existing aerodynamic contours of the aircraft engine nacelle so as to provide a lower boattail angle for improved drag characteristics in the stowed or normal flight position. In that position, the deflector door interior configuration comprises a portion upstream of the engine exhaust nozzle exit plane and a downstream "fishmouth" portion through which flows hot engine exhaust gases surrounded circumferentially by cool air discharged from the engine fan. Geometry of the stowed fishmouth is sized and shaped to take advantage of mixing and shearing action between the exhaust streams so as to produce a desired variable area nozzle effect on the engine operation and thereby improve its forward thrust performance. Geometry of the upstream portion of the inside surface of the doors is sized and shaped with end plates so that when the deflector doors move to the deployed position, the exhaust streams are diverted outward and forward to produce a desired level of reverse thrust.
REFERENCES:
patent: 3550855 (1970-12-01), Feld et al.
patent: 3567128 (1971-03-01), Urquhart et al.
patent: 3570247 (1971-03-01), Denning et al.
patent: 3604662 (1971-09-01), Nelson et al.
patent: 3610534 (1971-10-01), Medawar et al.
patent: 3856239 (1974-12-01), Leibach
patent: 3984974 (1976-10-01), Medawar et al.
Garrett Robert E.
Gill Mellor A.
Grumman Aerospace Corporation
LandOfFree
Thrust reverser nozzle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thrust reverser nozzle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thrust reverser nozzle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1741804