公开(公告)号：US20220018381A1

公开(公告)日：2022-01-20

申请号：US17490420

申请日：2021-09-30

Applicant: Bell Textron Inc.

Inventor： Scott David Poster

IPC: F16B33/02 ,  F16B31/04

Abstract: A fastener includes: a shaft having longitudinal axis and a first and second threaded portions, the first and second threaded portions separated by a central portion having a reduced diameter between the first and second threaded portions, and at least one of the first or second threaded portions is chamfered to reduce friction on leading threads.

公开(公告)号：US11225323B2

公开(公告)日：2022-01-18

申请号：US16541561

申请日：2019-08-15

Applicant: Bell Textron Inc.

Inventor： Keith Alan Stanney ,  Steven Ray Ivans ,  Brent Chadwick Ross ,  Troy Bushmire

IPC: B64C27/28 ,  B64C17/02 ,  B64C3/56 ,  B64C27/50 ,  B64C27/26 ,  B64C27/82 ,  B64C1/30

Abstract: Embodiments are directed to a rotorcraft comprising a body having a longitudinal axis, a wing coupled to the body, a single tiltrotor assembly pivotally coupled to the body, and the tiltrotor assembly configured to move between a position generally perpendicular to the longitudinal axis during a vertical flight mode and a position generally parallel to the longitudinal axis during a horizontal flight mode. The rotorcraft may further comprise an anti-torque system configured to counteract torque generated by the tiltrotor assembly during vertical flight. The rotorcraft may further comprise a center of gravity compensation system configured to manage a rotorcraft center of gravity during movement of the tiltrotor assembly between the vertical flight mode and the horizontal flight mode.

公开(公告)号：US20220010848A1

公开(公告)日：2022-01-13

申请号：US16926451

申请日：2020-07-10

Applicant: Bell Textron Inc.

Inventor： Gilberto Morales ,  Carlos Alexander Fenny ,  Cody Anderson

IPC: F16D41/07 ,  B64D35/00

Abstract: A clutch has an inner race, an outer race spaced from the inner race and forming a radial cavity between the races, and a plurality of sprags disposed in the radial cavity. The sprags have a different coefficient of thermal expansion (CTE) from the inner race, the outer race, or both races, and a sprag cage retains the sprags at a uniform spacing within the radial cavity. When the clutch is at a first temperature, a gap exists between the sprags and the inner race, between the sprags and the outer race, or between the sprags and both races, and the clutch is disengaged. When the clutch is at a second temperature the sprags are in contact with both the races, and the clutch is engaged.

公开(公告)号：US20210404516A1

公开(公告)日：2021-12-30

申请号：US16916353

申请日：2020-06-30

Applicant: Bell Textron Inc.

Inventor： George Matthew THOMPSON ,  Joseph Richard CARPENTER, JR. ,  Paul SHERRILL ,  Jonathan Andrew KNOLL

IPC: F16C33/06 ,  F01D25/16 ,  B64C27/32 ,  B64C27/54 ,  F16C17/02

Abstract: A bearing system includes an inboard bearing assembly and an outboard bearing assembly. The inboard bearing assembly includes an inboard fitting and an inboard race. The inboard fitting includes a plate with a convex mating surface and a first aperture formed through the plate for receiving a blade root of a rotor blade. The inboard race comprising a concave mating surface configured to receive the convex mating surface a second aperture formed the inboard race. The outboard bearing assembly includes an outboard bearing assembly comprising an outboard fitting having an aperture formed therethrough for receiving the blade root of the rotor blade.

公开(公告)号：US20210403147A1

公开(公告)日：2021-12-30

申请号：US16915877

申请日：2020-06-29

Applicant: Bell Textron Inc.

Inventor： Charles Eric COVINGTON ,  Randall Lee JOHNSON ,  Hunter Barton NELSON ,  Michael David TRANTHAM

IPC: B64C27/00 ,  B64C27/57

Abstract: A rotorcraft comprising a rotor blade designed to flap about a hinge point, a measurement system designed to measure blade flapping, and a processing system designed to alter blade flapping measurements. The processing system further comprises a correction process to alter a blade flapping measurement dependent on rotor RPM or rotor torque.

公开(公告)号：US20210399607A1

公开(公告)日：2021-12-23

申请号：US16908286

申请日：2020-06-22

Applicant: Bell Textron Inc.

Inventor： Grant Beall

IPC: H02K7/116 ,  B64D27/24 ,  B64C29/00 ,  H02K5/10 ,  H02K5/15 ,  H02K7/108 ,  H02K11/33

Abstract: A motor assembly is described and includes a housing having a forward endplate and a rear endplate; a plurality of motors disposed within the housing; and a drive shaft driven by the plurality of motors and having a first end extending through the forward endplate of the housing and a second end extending through the rear endplate of the housing, wherein the first end of the drive shaft is configured to engage with a gearbox.

公开(公告)号：US20210394897A1

公开(公告)日：2021-12-23

申请号：US16903831

申请日：2020-06-17

Applicant: Bell Textron Inc.

Inventor： Elizabeth Feeley ,  Karl H. Schroeder

IPC: B64C29/00 ,  B64C13/38 ,  B64C11/00 ,  B64C11/32

Abstract: One embodiment is a rotor system comprising a duct ring; a hub disposed centrally to the duct ring; first and second stators each connected between the duct ring and the hub; first and second control vanes rotatably connected to the first and second stators, respectively; and a structural hoop having a first end connected to the first control vane and a second end connected to the second control vane, the structural hoop for translating rotation of the first control vane about a vane axis to the second control vane.

公开(公告)号：US20210380234A1

公开(公告)日：2021-12-09

申请号：US16896082

申请日：2020-06-08

Applicant: Bell Textron Inc.

Inventor： Christopher M. JOHNSON

IPC: B64C29/00

Abstract: In an embodiment, a vertical-lift augmentation system for an aircraft includes a fan bank mounted to the aircraft in proximity to a wing of the aircraft, where the fan bank may include at least one fan. The vertical-lift augmentation system also includes a panel movably attached to the aircraft in relation to the fan bank, where the panel is adjustable between at least a first position in which the panel encloses the fan bank in the aircraft and a second position in which the panel at least partially exposes the fan bank.

公开(公告)号：US20210362845A1

公开(公告)日：2021-11-25

申请号：US16878045

申请日：2020-05-19

Applicant: Bell Textron Inc.

Inventor： Bryan Kenneth Baskin

IPC: B64C27/46 ,  B64C27/50 ,  B64C29/00

Abstract: Embodiments are directed to a rotor blade comprising a blade tip attached to the outboard end of the rotor blade. The blade tip has at least two sides that are tapered together to an edge. The length of the blade tip extending away from the outboard end to the edge is a distance that is greater than half the thickness of the outboard end. When the rotor blade is operating in a folded configuration, air flows over the sides in a direction generally parallel to a longitudinal axis of the rotor blade. The sides have profiles that minimize or prevent separation of the air flow from the blade tip.

公开(公告)号：US20210362837A1

公开(公告)日：2021-11-25

申请号：US16879114

申请日：2020-05-20

Applicant: Bell Textron Inc.

Inventor： Kyle Thomas Cravener ,  Andrew Ryan Maresh ,  Brady Garrett Atkins ,  Kynn J. Schulte ,  Troy Schank

IPC: B64C11/28 ,  B64C11/06

Abstract: Embodiments are directed to a blade lock comprising a fold lock adapted to prevent folding of a rotor blade in a fold-lock position and to allow folding of the rotor blade in a pitch-lock position. The blade lock further comprises a pitch lock adapted to allow pitch movement of a rotor blade in a fold-lock position and to prevent pitch movement of the rotor blade in the pitch-lock position. A spring-loaded link pivotally connects both the fold lock and the pitch lock and is adapted to provide passive, overcenter locking in the fold-lock position. An actuator is coupled to the pitch lock and is adapted to move the pitch lock and the fold lock between the fold-lock and pitch-lock positions.