公开(公告)号：US11827336B2

公开(公告)日：2023-11-28

申请号：US16717547

申请日：2019-12-17

申请人： Hamilton Sundstrand Corporation

发明人： Timothy Maver ,  Julien Lassalle ,  Thibaut Marger ,  Gregory Giddings ,  Charles L. DeGeorge ,  Stephen J. Bukowinski ,  Romain Bouloc

IPC分类号： B64C11/38 ,  B64C11/40 ,  B64C11/30 ,  B64C11/44 ,  B64D27/02

CPC分类号： B64C11/385 ,  B64C11/40 ,  B64C11/303 ,  B64C11/44 ,  B64D2027/026 ,  F05D2220/323 ,  F05D2260/76 ,  F05D2260/79 ,  F05D2260/83 ,  F05D2270/62

摘要： A system for controlling a propeller having a plurality of blades having a primary control system and a backup control system. The primary control system including a sensor responsive to a propeller state, and a controller connected to the sensor and to an electrohydraulic control actuator. The electrohydraulic control actuator is connected via a bypass valve to a hydraulic actuator that controls at least a blade angle of a blade of the propeller. The controller generating commands to the electrohydraulic control actuator based on at least the propeller state. The backup control system including a second controller, an electrohydraulic solenoid operably connected to the bypass valve. The backup control system is operable to hydraulically disable the primary control system via the bypass valve upon the occurrence of a selected condition, the second controller modulates the operation of the electrohydraulic solenoid to control the bypass actuator based on the propeller state.