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AssigneePratt & Whitney Canada Corp.
InventorsJasraj Chahal, Carmine Lisio, Darragh McGrath, Giancarlo Zingaro
Estimating the term…
A system and method for feathering an aircraft propeller are provided. The aircraft propeller is coupled to an actuator for setting a blade pitch of the propeller. The blade pitch is controlled by modulating a supply of hydraulic fluid to the actuator. At least one feather solenoid is provided that comprises a first solenoid coil, a second solenoid coil, and a solenoid valve coupled to the actuator and to the first and the second solenoid coil. At least one controller is configured to selectively energize and de-energize the first and the second solenoid coil. The solenoid valve is configured to be activated when the first solenoid coil and the second solenoid coil are de-energized and to, when activated, modulate the supply of hydraulic fluid to the actuator for adjusting the blade pitch of the propeller towards a feather position.
A system for feathering an aircraft propeller having coupled thereto an actuator for setting a blade pitch of the propeller, the blade pitch controlled by modulating a supply of hydraulic fluid to the actuator, the system comprising:
A method for feathering an aircraft propeller having coupled thereto an actuator for setting a blade pitch of the propeller, the blade pitch controlled by modulating a supply of hydraulic fluid to the actuator, the method comprising:
Dependencies are inferred from the claim text.