Bleed valve for axial flow compressor

Claim 1

A bleed valve construction for a multistage compressor including: a support case having spaced inner and outer walls defining an air duct for the compressor between them and struts extending between the walls across the air duct, said struts and the case being located between adjacent stages of the compressor, bleed doors mounted in openings in the outer wall of the case between adjacent struts and being movable into open or closed position, each door having a projecting arm thereon, an actuating ring mounted on said outer case in spaced relation to said door and means contraining said ring to move circumferentially without axial movement, a plurality of links connecting the ring to the doors, one link for each door for moving the doors in unison into open or closed position in response to circumferential movement of said ring, and actuating means for causing circumferential movement of the ring for actuation the doors in unison.