Power plants – Reaction motor – Interrelated reaction motors
Patent
1975-03-25
1977-05-31
Gordon, Clarence R.
Power plants
Reaction motor
Interrelated reaction motors
60229, 60230, 23926529, 23926531, 23926539, 23926543, F02K 302
Patent
active
040261050
ABSTRACT:
A thrust reverser cascade section comprising a plurality of cascade windows mounted in an engine nacelle rearwardly of the fan air compressor, each cascade window including a plurality of cascade elements, is disclosed. The cascade elements are rotatable through an arc of 90.degree., more or less, between closed and open positions, along axes lying generally parallel to the longitudinal axis of the nacelle. The cascade elements include deflecting vanes and are generally S-shaped when viewed in cross-section. Adjacent cascade elements abut one another in both their open and closed positions. Seals are located in the regions of abutment. The vanes direct fan air flow from the fan air duct toward the front of the nacelle when the cascade elements are in their open position. Each cascade window also includes sealing end plates adapted to move into and out of sealing relationship with the cascade elements to seal the ends when the cascade elements are closed. A fan duct blocking section comprising a plurality of cooperating doors that move between a fan air duct open position and a fan air duct closed position is also disclosed. The doors are movable rearwardly from their open to their closed positions and vice versa. As they move rearwardly, they also contract inwardly. In one form, contraction is provided by the rearward portion of adjacent doors moving together in a fan-like manner. In an alternative form, the doors are hinged together in a manner such that a portion of the doors fold in an accordion-like manner.
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Gordon Clarence R.
The Boeing Company
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