公开(公告)号：KR850000938B1

公开(公告)日：1985-06-28

申请号：KR810000866

申请日：1981-03-17

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ANDREWS MERRITT B

IPC: F03D7/04 ,  F03D7/02

公开(公告)号：KR850000937B1

公开(公告)日：1985-06-28

申请号：KR810000865

申请日：1981-03-17

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ANDREWS MERRITT B

IPC: F03D7/04 ,  F03D7/02

公开(公告)号：CA1146077A

公开(公告)日：1983-05-10

申请号：CA372765

申请日：1981-03-11

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ANDREWS MERRITT B

IPC: F03D7/04 ,  F03D7/02 ,  F03D7/00

Abstract: BLADE PITCH ACTUATION SYSTEM Blade pitch actuation system wherein the blades are hydraulically maintained in phase with one another. The system comprises hydraulic actuators each adapted to drive a single blade in a pitch change mode of operation. Fluid flow to the actuators is controlled by a blade actuator control valve in fluid communication with the actuators and an hydraulic fluid source and drain. An input member of the control valve is provided with passages which provide selected communication between the hydraulic fluid source and drain and passages in cooperating control valve feedback members each operated by, and in fluid communication with one of the blade actuators. The input and feedback members are positionable along one another such that selective positioning of the input member causes simultaneous selected pressurization and draining of the blade actuators through the feedback members thereby effecting a desired, phased blade pitch setting. The phased movement of the blades to such setting causes a corresponding movement of the feedback members nulling the actuator control valve and preventing deviation in blade pitch from the desired setting.

公开(公告)号：CA1146076A

公开(公告)日：1983-05-10

申请号：CA372746

申请日：1981-03-11

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ANDREWS MERRITT B

IPC: F03D7/04 ,  F03D7/02 ,  F03D7/00

Abstract: WIND TURBINE BLADE PITCH CONTROL SYSTEM Wind turbine blade pitch control system including hydraulic actuators which pivotally drive the blades about the longitudinal axes thereof to adjust the blade pitch. The actuators are supplied with hydraulic fluid from independent sources thereof for normal blade pitch adjustment and feathering. Means are provided which, during feathering, isolate the pressurization and drain of the actuators from certain system components, whereby such pressurization and drain are not hampered by any malfunction of such components.

公开(公告)号：US3912418A

公开(公告)日：1975-10-14

申请号：US51093274

申请日：1974-10-01

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ANDREWS MERRITT B ,  BARNES PHILIP E

IPC: F16N9/02 ,  B64C11/30 ,  F01D25/18 ,  B64C11/36

CPC classification number: F01D25/18 ,  B64C11/30

Abstract: Lubrication of the fan of a fan propulsor is obtained by damming the oil at judicious locations within the hub so that a centrifugal ring of oil is formed around the parts intended to be lubricated and continuously feeding a replenishing chamber and draining the excess during rotation for replenishing the oil in the dammed areas when the fan is nonrotating for achieving a controlled lubrication level.