Power plants – Reaction motor – Interrelated reaction motors
Patent
1990-07-05
1993-09-14
Bertsch, Richard A.
Power plants
Reaction motor
Interrelated reaction motors
244110B, 23926529, F02K 302
Patent
active
052438171
ABSTRACT:
A fail-safe pivot door-type aircraft turbine engine thrust reverser which includes a plurality of pairs of pivoting doors on the blocker and deflector sides of openings in a fan jet nacelle. The doors form a flush surface along the nacelle exterior and the fan duct flow path when stowed during normal engine operation in flight. When the doors are deployed in thrust reversing mode, an extensible actuator causes them to translate aft in the opening, with one end of the blocker door moving to at least partially block airflow through the duct and divert it out along the door through the opening uncovered by door deployment. The deflector door pivots outwardly to extend the door length and further direct airflow out and forward along the outside of the nacelle. Upon initiation of deployment, a cooperating pin and track assembly causes the door to initially translate inwardly, then rearwardly, after which the pivoting action begins. This initial "over-center" movement prevents accidental deployment in flight, even if all latches and actuators are disconnected and assures tight sealing around the door during normal flight.
REFERENCES:
patent: 3605411 (1971-09-01), Maison et al.
patent: 4382551 (1983-05-01), Thayer
patent: 4894985 (1990-01-01), Dubois et al.
patent: 4916895 (1990-04-01), Dubois
patent: 4960243 (1990-10-01), Dubois et al.
patent: 5003770 (1991-04-01), Schegerin et al.
patent: 5039171 (1991-08-01), Lore
Bertsch Richard A.
Gilliam Frank
Kocharov Michael I.
Rohr Inc.
Schlesinger P. J.
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