Circulation control aerofoils

Details Circulation control aerofoils Circulation control aerofoils

1994-08-18

1996-06-25

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Drive by fluid reaction jet on working member

Articulated or flexible connection

416 90R, 244 75R, 244219, F04D 2918

Patent

active

055294588

ABSTRACT:
A circulation control aerofoil having an internal chamber for receiving during operation air for exhaust through a circulation control air exhaust slot defined by spaced-apart slot lips is provided with a plurality of actuators of electrically deformable material adapted during operation to cause local bending of the aerofoil structure to which they are attached to selectively adjust the width of the air exhaust slot. The actuators may be piezo-electric actuators.

REFERENCES:
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patent: 3524711 (1970-04-01), Cheeseman et al.
patent: 3670994 (1972-06-01), Kizilos
patent: 4131990 (1978-12-01), Schmidt
patent: 4137008 (1979-01-01), Grant et al.
patent: 4655685 (1987-04-01), Fradenburgh
patent: 4799859 (1989-01-01), Zimmer
patent: 4812698 (1989-03-01), Chida et al.
patent: 4966526 (1990-10-01), Amelio et al.
patent: 5224826 (1993-07-01), Hall et al.

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