公开(公告)号：US20180163795A1

公开(公告)日：2018-06-14

申请号：US15375134

申请日：2016-12-11

Applicant: Bell Helicopter Textron, Inc.

Inventor： Eric Stephen Olson ,  David Russell Bockmiller

IPC: F16D41/07 ,  F16H57/021 ,  F16H55/17 ,  F16H57/00 ,  B64C29/00 ,  B64C27/14

CPC classification number: F16D41/07 ,  B64C27/12 ,  B64C29/0033 ,  F16H55/17 ,  F16H57/0025 ,  F16H57/021 ,  F16H2057/02043

Abstract: A drivetrain subassembly includes a clutch portion and a gear shaft portion connected by an integrated inner race/gear shaft member. The clutch portion includes a sprag clutch configured to transfer torque from an engine to a rotor system while allowing the rotor system to continue to rotate in the event of an engine failure. The inner race of the clutch portion is integrally formed with the gear shaft of the gear shaft portion of the subassembly. The gear shaft is configured to rotate about the longitudinal axis of the sprag clutch for transmitting torque from the sprag clutch to a downstream drivetrain component.

公开(公告)号：US10800510B2

公开(公告)日：2020-10-13

申请号：US15898550

申请日：2018-02-17

Applicant: Bell Helicopter Textron Inc.

Inventor： Eric Stephen Olson ,  David Russell Bockmiller

IPC: B64C3/56 ,  B64C29/00

Abstract: Systems and methods include providing an aircraft with a fuselage and a wing assembly rotatable relative to the fuselage about a stow axis between a flight position and a stowed position. The aircraft includes a gearbox having a retractable driveshaft that selectively engages the mid-wing gearbox via axially translatable motion along a rotation axis when the wing assembly is in the flight position. The retractable driveshaft also selectively disengages the mid-wing gearbox in the flight position to allow selectively rotation of the wing assembly about the stow axis from the flight position to the stowed position resulting in the mid-wing gearbox being misaligned with the retractable driveshaft when the wing assembly is in the stowed position.

公开(公告)号：US11662023B2

公开(公告)日：2023-05-30

申请号：US15911143

申请日：2018-03-04

Applicant: Bell Helicopter Textron Inc.

Inventor： Eric Stephen Olson ,  David Russell Bockmiller

IPC: B64C29/00 ,  F16J15/3224 ,  B64C3/56 ,  F16H57/04 ,  F16C3/02 ,  F16D1/10 ,  F16C33/72

CPC classification number: F16J15/3224 ,  B64C3/56 ,  B64C29/0033 ,  F16C3/02 ,  F16C33/723 ,  F16D1/10 ,  F16H57/043 ,  F16D2001/103

Abstract: Systems and methods include providing an aircraft with a fuselage and a wing assembly rotatable relative to the fuselage about a stow axis between a flight position and a stowed position. The aircraft includes an engine reduction gearbox having a retractable driveshaft that selectively engages the mid-wing gearbox via axially translatable motion along a rotation axis when the wing assembly is in the flight position. The mid-wing gearbox includes a plunger seal that is displaced in response to contact with the retractable driveshaft. Displacement of the plunger seal allows lubricant to flow through an inner bore in the retractable driveshaft, across splines of the retractable driveshaft and the mid-wing gearbox, and through lubrication ports in the mid-wing gearbox to lubricate the engine reduction gearbox, splines of the retractable driveshaft and the mid-wing gearbox, and the mid-wing gearbox via a single lubrication system.

公开(公告)号：US20190389571A1

公开(公告)日：2019-12-26

申请号：US16014441

申请日：2018-06-21

Applicant: Bell Helicopter Textron 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 ,  B64D27/26 ,  B64D35/08 ,  B64C3/56

Abstract: A tiltrotor aircraft includes a propulsion system with a fixed engine and a rotatable proprotor. The engine is located below the wing of the tiltrotor aircraft, and the rotatable proprotor assembly is 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：US20190256190A1

公开(公告)日：2019-08-22

申请号：US15898550

申请日：2018-02-17

Applicant: Bell Helicopter Textron Inc.

Inventor： Eric Stephen Olson ,  David Russell Bockmiller

IPC: B64C3/56 ,  B64C29/00

Abstract: Systems and methods include providing an aircraft with a fuselage and a wing assembly rotatable relative to the fuselage about a stow axis between a flight position and a stowed position. The aircraft includes a gearbox having a retractable driveshaft that selectively engages the mid-wing gearbox via axially translatable motion along a rotation axis when the wing assembly is in the flight position. The retractable driveshaft also selectively disengages the mid-wing gearbox in the flight position to allow selectively rotation of the wing assembly about the stow axis from the flight position to the stowed position resulting in the mid-wing gearbox being misaligned with the retractable driveshaft when the wing assembly is in the stowed position.

公开(公告)号：US20190389572A1

公开(公告)日：2019-12-26

申请号：US16015760

申请日：2018-06-22

Applicant: Bell Helicopter Textron 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 ,  B64C3/56 ,  B64D35/00

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：US20190271398A1

公开(公告)日：2019-09-05

申请号：US15911143

申请日：2018-03-04

Applicant: Bell Helicopter Textron Inc.

Inventor： Eric Stephen Olson ,  David Russell Bockmiller

IPC: F16J15/3224 ,  B64C3/56 ,  F16D1/10 ,  F16H57/04 ,  F16C3/02

Abstract: Systems and methods include providing an aircraft with a fuselage and a wing assembly rotatable relative to the fuselage about a stow axis between a flight position and a stowed position. The aircraft includes an engine reduction gearbox having a retractable driveshaft that selectively engages the mid-wing gearbox via axially translatable motion along a rotation axis when the wing assembly is in the flight position. The mid-wing gearbox includes a plunger seal that is displaced in response to contact with the retractable driveshaft. Displacement of the plunger seal allows lubricant to flow through an inner bore in the retractable driveshaft, across splines of the retractable driveshaft and the mid-wing gearbox, and through lubrication ports in the mid-wing gearbox to lubricate the engine reduction gearbox, splines of the retractable driveshaft and the mid-wing gearbox, and the mid-wing gearbox via a single lubrication system.