公开(公告)号：US20200017196A1

公开(公告)日：2020-01-16

申请号：US16031361

申请日：2018-07-10

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jasraj CHAHAL ,  Carmine LISIO ,  Darragh MCGRATH ,  Giancarlo ZINGARO

IPC: B64C11/38 ,  B64C11/42

Abstract: 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.

公开(公告)号：US20180327083A1

公开(公告)日：2018-11-15

申请号：US16043758

申请日：2018-07-24

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Carmine LISIO

IPC: B64C11/50 ,  B64D31/00

CPC classification number: B64C11/50 ,  B64C11/305 ,  B64D31/00 ,  B64D31/12

Abstract: Herein provided are methods and systems for controlling operation a first propeller of an aircraft, the first propeller associated with a first engine, the aircraft further comprising a second propeller associated with a second engine. A first requested engine power for the first engine is obtained. A second requested engine power for the second engine is obtained. The first propeller is synchronized with the second propeller by setting a first propeller command for the first propeller based on the first and second requested engine power, and the first propeller command is sent for the first propeller.

公开(公告)号：US20220333535A1

公开(公告)日：2022-10-20

申请号：US17854245

申请日：2022-06-30

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jasraj CHAHAL ,  Brant DUKE ,  Carmine LISIO ,  Jim R. JARVO ,  Giancarlo ZINGARO

IPC: F02C9/58 ,  B64C11/30 ,  B64D27/10 ,  B64D31/00 ,  F02C9/28

Abstract: An electronic controller for an engine and a propeller, a control system and related methods are described herein. The control system comprises the controller having a first channel and a second channel independent from and redundant to the first channel. Each channel comprises a control processor configured to receive first engine and propeller parameters and to output, based on the first engine and propeller parameters, at least one engine control command and at least one propeller control command. Each channel also comprises a protection processor configured to receive second engine and propeller parameters and to output, based on the second engine and propeller parameters, at least one engine protection command and at least one propeller protection command. The control system comprises sensors for measuring the parameters of the engine and/or the propeller and effectors configured to control the engine and the propeller.

公开(公告)号：US20200324877A1

公开(公告)日：2020-10-15

申请号：US16378698

申请日：2019-04-09

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jasraj CHAHAL ,  Carmine LISIO ,  Darragh MCGRATH ,  Michael YOUSSEF ,  Giancarlo ZINGARO

IPC: B64C11/32 ,  B64C11/34

Abstract: Methods and systems for feathering a propeller are described herein. A solenoid is configured to cause a propeller to feather when the solenoid is energized. An electronic controller is connected to the solenoid through a first electrical connection for energizing the solenoid to feather the propeller. A secondary mechanism is connected to the solenoid through a second electrical connection for energizing the solenoid to feather the propeller. The second electrical connection is independent from the first electrical connection.

公开(公告)号：US20200307774A1

公开(公告)日：2020-10-01

申请号：US16371608

申请日：2019-04-01

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Giancarlo ZINGARO ,  Sean MCCARTHY ,  Jasraj CHAHAL ,  Benjamin BREGANI ,  Carmine LISIO

IPC: B64C11/44 ,  B64D31/00 ,  F02D29/02

Abstract: Methods and systems for operating an aircraft powerplant comprising an engine coupled to a variable-pitch propeller capable of generating forward and reverse thrust are described herein. A request to enable a mode for automated reverse thrust is received. Reverse thrust conditions are determined to have been met when the aircraft is on-ground, a blade angle of the propeller is below a blade angle threshold and a position of a power lever is at a selected idle region of the power lever. Reverse thrust of the propeller is triggered when the mode for automated reverse thrust is enabled and the reverse thrust conditions have been met.

公开(公告)号：US20200247552A1

公开(公告)日：2020-08-06

申请号：US16269534

申请日：2019-02-06

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Carmine LISIO ,  Frederic FORTIN

IPC: B64D31/04 ,  B64D27/10 ,  F02C9/28

Abstract: A method and a system are provided for controlling a propeller-driven aircraft, the aircraft powered by at least one engine having at least one propeller associated therewith. At least one control input for the at least one engine is received at an engine controller for the at least one engine. The engine controller determines, based on the at least one control input, a setpoint for a rotational speed of the at least one propeller and outputs, to a propeller controller for the at least one propeller, a control signal comprising instructions to adjust the rotational speed of the at least one propeller to the setpoint.

公开(公告)号：US20150251770A1

公开(公告)日：2015-09-10

申请号：US14196933

申请日：2014-03-04

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean-Francois BISSON ,  Carmine LISIO ,  Romain CHEVALIER ,  Dave SELLORS ,  Yusuf SYED ,  Guy RIVERIN ,  Matthew CHIASSON

IPC: B64D41/00 ,  B64D31/06

CPC classification number: B64D41/00 ,  B64D31/06 ,  B64D35/08 ,  B64D2041/002 ,  F02C7/32 ,  F02C9/42 ,  F05D2270/02 ,  F05D2270/023 ,  F05D2270/304 ,  Y02T50/44 ,  Y02T50/671

Abstract: A first and second engine are connected to a drive train for driving an aircraft accessory. A gearbox is connected to a primer mover propulsor and an actuator operatively associated with a selected engine is moveable between a position in which the selected engine drivingly engages the gearbox for driving the propulsor and a position in which the selected engine disengages from the gearbox. A position signal, a status signal, and a request signal respectively indicative of a present position of the actuator, a governing state and present speed of each engine, and a request for movement of the actuator from the present position to the other position are received. If the selected engine's speed differs from a predetermined threshold, a control signal is output for causing the engine's speed to be adjusted towards the threshold. A control signal indicating that movement of the actuator is permitted is then output.

Abstract translation: 第一和第二发动机连接到用于驱动飞机附件的传动系。 齿轮箱连接到起动机推动器，并且与所选择的发动机可操作地相关联的致动器可在选择的发动机驱动地接合齿轮箱以驱动推进器的位置和所选择的发动机与变速箱脱离的位置之间移动。 分别指示致动器的当前位置，每个发动机的控制状态和当前速度的位置信号，状态信号和请求信号以及致动器从当前位置到另一位置的移动请求 。 如果所选择的发动机的速度与预定的阈值不同，则输出控制信号以使发动机的速度朝向阈值进行调节。 然后输出指示执行器的移动被允许的控制信号。