公开(公告)号：US20240336356A1

公开(公告)日：2024-10-10

申请号：US18539741

申请日：2023-12-14

Applicant: Textron Innovations Inc.

Inventor： Charles Eric COVINGTON ,  Chia-Wei SU ,  Darren Gregory LANG ,  Thomas PARSONS ,  Cody Earl FEGELY

IPC: B64C27/12 ,  B64D31/12

CPC classification number: B64C27/12 ,  B64D31/12

Abstract: A rotorcraft has a drive system including a main rotor coupled to a main rotor gearbox to rotate the main rotor at a rotor speed, a main engine coupled to the drive system to provide a first power, a supplemental engine coupled, when a first clutch is engaged, to the drive system to provide a second power additive to the first power, and a control system operable to control the main engine and the supplemental engine to provide a total power demand, where the main engine is controlled based on variations in rotor speed and a power compensation command to produce the first power, and the supplemental engine is controlled to produce the second power in response to a supplemental power demand.

公开(公告)号：US20230331392A1

公开(公告)日：2023-10-19

申请号：US17721015

申请日：2022-04-14

Applicant: Textron Innovations Inc.

Inventor： Charles Eric COVINGTON ,  Chia-Wei SU ,  Darren Gregory LANG

IPC: B64D31/12 ,  B64D35/08

CPC classification number: B64D31/12 ,  B64D35/08

Abstract: A method of operating a multi-engine drive system of an aircraft includes driving a main rotor of the aircraft by a main engine of the multi-engine drive system at an operating speed of the main engine, operating a supplemental engine of the multi-engine drive system at approximately 80% of an operating speed of the supplemental engine, wherein, during the operating step, a clutch interoperably coupled to the supplemental engine is interoperably decoupled from the main rotor and, responsive to a command to interoperably engage the clutch, if the clutch successfully engages such that the clutch is interoperably coupled to the main rotor, providing, by the supplemental engine, power to the main rotor.