公开(公告)号：US20240132206A1

公开(公告)日：2024-04-25

申请号：US18049181

申请日：2022-10-23

Applicant: Textron Innovations Inc.

Inventor： Douglas Robert Mueller ,  Jason DeWitt McPeak ,  Mark Alan Przybyla

IPC: B64C29/00 ,  B64D35/00 ,  F16H57/04

CPC classification number: B64C29/0033 ,  B64D35/00 ,  F16H57/0442

Abstract: A drive system for a rotorcraft includes first and second gearbox assemblies and a lubrication assembly. The lubrication assembly includes first and second lubrication systems and a valve connected between the first and second lubrication systems such that when the valve is in a first position, a test mode of operation of the lubrication assembly is enabled and when the valve is in a second position, a normal mode of operation of the lubrication assembly is enabled.
The lubrication assembly also includes a valve control unit operable to instruct the valve to selectively move between the first position and the second position.

公开(公告)号：US10759527B2

公开(公告)日：2020-09-01

申请号：US16212045

申请日：2018-12-06

Applicant: Textron Innovations Inc.

Inventor： Mark Alan Przybyla

IPC: B64C27/28 ,  B64C27/26 ,  B64C11/28 ,  B64C29/00 ,  B64C27/625 ,  F16D47/04 ,  F16D41/069 ,  F16D23/04 ,  B64C27/68

Abstract: A rotary propulsion system for a tiltrotor aircraft operable to transition between rotary and non rotary flight modes. The rotary propulsion system includes an engine coupled to a freewheeling unit. A gear system positioned between the freewheeling unit and a proprotor assembly has a torque path coupling assembly disposed between an engine side gear assembly and a rotor side gear assembly. In a disengaged position, the torque path coupling assembly interrupts the torque path between the engine and the proprotor assembly. In an engaged position, the torque path coupling assembly completes the torque path between the engine and the proprotor assembly. A hybrid power unit is configured to accelerate the engine side gear assembly to match the output rotating speed to the input rotating speed enabling the torque path coupling assembly to shift from the disengaged position to the engaged position.

公开(公告)号：US10648519B2

公开(公告)日：2020-05-12

申请号：US15914527

申请日：2018-03-07

Applicant: Textron Innovations Inc.

Inventor： Mark Alan Przybyla

IPC: F16D47/04 ,  B64C27/52 ,  B64C27/30 ,  B64C27/28 ,  B64C11/28 ,  B64C11/00 ,  B64C29/00 ,  F16D23/04 ,  F16D41/069 ,  B64D35/04

Abstract: A rotary propulsion system for a tiltrotor aircraft operable to transition between rotary and non rotary flight modes. The rotary propulsion system includes an engine that is coupled to a freewheeling unit. A gear system has a torque path coupling assembly between a first gear assembly that is coupled to the freewheeling unit and a second gear assembly that is coupled to a proprotor assembly. The torque path coupling assembly has an engaged position wherein the output of the first gear assembly is coupled to the input of the second gear assembly thereby providing a torque path between the engine and the proprotor assembly. The torque path coupling assembly also has a disengaged position wherein the output of the first gear assembly is independent of the input of the second gear assembly thereby interrupting the torque path between the engine and the proprotor assembly.

公开(公告)号：US20240228030A9

公开(公告)日：2024-07-11

申请号：US18049181

申请日：2022-10-24

Applicant: Textron Innovations Inc.

Inventor： Douglas Robert Mueller ,  Jason DeWitt McPeak ,  Mark Alan Przybyla

IPC: B64C29/00 ,  B64D35/00 ,  F16H57/04

CPC classification number: B64C29/0033 ,  B64D35/00 ,  F16H57/0442

Abstract: A drive system for a rotorcraft includes first and second gearbox assemblies and a lubrication assembly. The lubrication assembly includes first and second lubrication systems and a valve connected between the first and second lubrication systems such that when the valve is in a first position, a test mode of operation of the lubrication assembly is enabled and when the valve is in a second position, a normal mode of operation of the lubrication assembly is enabled.
The lubrication assembly also includes a valve control unit operable to instruct the valve to selectively move between the first position and the second position.