公开(公告)号：US11174014B2

公开(公告)日：2021-11-16

申请号：US17037512

申请日：2020-09-29

Applicant: Textron Innovations Inc.

Inventor： Eric Stephen Olson

IPC: B64C27/12 ,  B64D35/02 ,  B64D27/10 ,  B64D27/24 ,  F16D28/00 ,  F16D41/06 ,  F16D48/02 ,  F16D41/08 ,  B64C27/06 ,  F16D25/061

Abstract: A failsafe multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having input and output races. The freewheeling unit has a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly must be energized to shift the bypass assembly from the engaged position to a disengaged position. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.

公开(公告)号：US11148798B2

公开(公告)日：2021-10-19

申请号：US16015760

申请日：2018-06-22

Applicant: Textron Innovations Inc.

Inventor： Colton Gilliland ,  Jeffrey Williams ,  Michael E. Rinehart ,  James Kooiman ,  Mark Przybyla ,  Clegg Smith ,  Eric Stephen Olson ,  George Ryan Decker ,  David Russell Bockmiller

IPC: B64C29/00 ,  B64D35/00 ,  B64C3/56

Abstract: A tiltrotor aircraft includes a propulsion system with a fixed engine and a rotatable proprotor. The engine is located on the top surface of the wing of the tiltrotor aircraft, and the rotatable proprotor assembly is also mounted on the top surface of the wing. The engine and proprotor assembly are connected via a series of one or more gearboxes that route the engine output from the engine to the proprotor.

公开(公告)号：US11708868B2

公开(公告)日：2023-07-25

申请号：US17494356

申请日：2021-10-05

Applicant: Textron Innovations Inc.

Inventor： Eric Stephen Olson ,  David Andrew Prater

IPC: F16D41/08 ,  F16D41/07 ,  F16D11/14 ,  F16D25/061 ,  F16D25/08 ,  F16D48/02 ,  B64C27/14 ,  B64D35/04 ,  B64D35/08 ,  F16D41/04 ,  F16D121/04 ,  B64D27/02 ,  F16D1/10 ,  F16D41/06

CPC classification number: F16D41/07 ,  B64C27/14 ,  B64D35/04 ,  B64D35/08 ,  F16D11/14 ,  F16D25/061 ,  F16D25/083 ,  F16D25/14 ,  F16D41/04 ,  F16D41/08 ,  B64D2027/026 ,  F16D2001/103 ,  F16D2041/0603 ,  F16D2121/04

Abstract: A failsafe multimode clutch assembly positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling having a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly uses pressurized lubricating oil to shift the bypass assembly between the engaged position and a disengaged position. A lock assembly enables and disables actuation of the bypass assembly. In the disengaged position, the overrunning mode of the freewheeling unit enables a unidirectional torque transfer mode of the clutch assembly. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.

公开(公告)号：US11174013B2

公开(公告)日：2021-11-16

申请号：US17037476

申请日：2020-09-29

Applicant: Textron Innovations Inc.

Inventor： Eric Stephen Olson ,  David Andrew Prater

IPC: B64C27/12 ,  B64D27/10 ,  B64D27/24 ,  B64D35/02 ,  F16D41/08 ,  F16D48/02 ,  F16D28/00 ,  B64C27/06 ,  F16D25/061

Abstract: A failsafe multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having input and output races. The freewheeling unit has a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly must be energized to shift the bypass assembly from the engaged position to a disengaged position. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.

公开(公告)号：US11161606B2

公开(公告)日：2021-11-02

申请号：US16743472

申请日：2020-01-15

Applicant: Textron Innovations Inc.

Inventor： Eric Stephen Olson

IPC: B64C27/59 ,  B64C27/37 ,  B64C29/02 ,  F16D3/24 ,  B64C27/14

Abstract: A propulsion assembly includes a rotor assembly, a mast coupled to the rotor assembly and a bull gear coupled to the mast. The bull gear is subject to radial and axial loads. The propulsion assembly includes a flexured standpipe extending through the bull gear and a ball bearing including inner and outer races interposed between the bull gear and the flexured standpipe. The ball bearing is configured to absorb axial loads from the bull gear. The bull gear is rotatably coupled to the flexured standpipe via the ball bearing. The flexured standpipe flexes in response to radial loads from the bull gear.