Invention Grant
- Patent Title: Method of controlling a propeller with two-position solenoid
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Application No.: US16418467Application Date: 2019-05-21
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Publication No.: US11059567B2Publication Date: 2021-07-13
- Inventor: Nicolas Des Roches-Dionne , Gabriel Meunier , Sylvain Lamarre
- Applicant: PRATT & WHITNEY CANADA CORP.
- Applicant Address: CA Longueuil
- Assignee: PRATT & WHITNEY CANADA CORP.
- Current Assignee: PRATT & WHITNEY CANADA CORP.
- Current Assignee Address: CA Longueuil
- Agency: Norton Rose Fulbright Canada LLP
- Main IPC: B64C11/40
- IPC: B64C11/40 ; B64C11/38

Abstract:
A method for controlling an aircraft propeller is provided that comprises obtaining a measurement of a speed of the propeller, comparing the propeller speed to a first threshold, responsive to determining that the propeller speed exceeds the speed threshold, outputting a valve control signal for opening a two-position solenoid valve coupled to the propeller, the two-position solenoid valve configured for controlling fluid flow to and from the propeller to control propeller blade angle, computing a rate of change of the propeller speed, comparing the rate of change of the propeller speed to a second threshold, and responsive to determining that the rate of change of the propeller speed is below the second threshold, outputting the valve control signal for closing the two-position solenoid valve. A system for controlling an aircraft propeller and an aircraft propeller control assembly are also provided.
Public/Granted literature
- US20200369370A1 METHOD OF CONTROLLING A PROPELLER WITH TWO-POSITION SOLENOID Public/Granted day:2020-11-26
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