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.

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：US10337601B2

公开(公告)日：2019-07-02

申请号：US14870170

申请日：2015-09-30

Applicant: Bell Helicopter Textron Inc.

Inventor： Eric Stephen Olson

IPC: F16H57/04 ,  F16H55/17 ,  B64C27/12

Abstract: A gear includes a toothed portion that has a plurality of teeth, an inner wall that defines a cavity, and a lubricant feed aperture. The lubricant feed aperture extends from the inner wall portion to a surface of a tooth. The lubricant feed aperture can deliver lubricant from the cavity to the surface of the tooth.

公开(公告)号：US20170089449A1

公开(公告)日：2017-03-30

申请号：US14870170

申请日：2015-09-30

Applicant: Bell Helicopter Textron Inc.

Inventor： Eric Stephen Olson

IPC: F16H57/04 ,  F16H55/17

CPC classification number: F16H57/0431 ,  B64C27/12 ,  F16H55/17 ,  F16H57/0423 ,  F16H57/0426 ,  F16H57/043 ,  F16H57/0442 ,  F16H57/0479 ,  F16H57/0486 ,  F16H57/0495

Abstract: In some embodiments, a gear includes a toothed portion that has a plurality of teeth, an inner wall that defines a cavity, and a lubricant feed aperture. The lubricant feed aperture extends from the inner wall portion to the toothed portion. The lubricant feed aperture can deliver lubricant from the cavity to the toothed portion.