公开(公告)号：US20210403174A1

公开(公告)日：2021-12-30

申请号：US16912345

申请日：2020-06-25

Applicant: Bell Textron Inc.

Inventor： Grant Beall ,  Cody C. Anderson

IPC: B64D35/08 ,  B64D27/24

Abstract: A motor assembly is described and includes a housing; a plurality of motors disposed within the housing; and a drive shaft comprising a plurality of interconnected drive shaft segments, wherein each one of the drive shaft segments is driven by a different one of the motors connected to the drive shaft segment via an integrated overrunning clutch.

公开(公告)号：US20210403168A1

公开(公告)日：2021-12-30

申请号：US16915002

申请日：2020-06-29

Applicant: Bell Textron Inc.

Inventor： Thomas Dewey Parsons ,  James E. Sobel ,  Alan Hisashi Steinert ,  David Henderson Loe

IPC: B64D27/02 ,  B64D27/24 ,  B64D41/00 ,  B60L50/60 ,  B64C3/32 ,  B64C27/50 ,  B64C29/00

Abstract: A hybrid propulsion system for a tiltrotor aircraft comprises one or more engines that provide thrust whenever the tiltrotor aircraft is in a first forward flight mode, one or more electrical or hydraulic power sources, and two or more pylon assemblies. Each pylon assembly houses one or more electric or hydraulic motors connected to the one or more electrical or hydraulic power sources and a proprotor. All or part of each pylon assembly is rotatable. The proprotors provide lift whenever the tiltrotor aircraft is in a vertical takeoff and landing mode and a hover mode, and provide thrust whenever the tiltrotor aircraft is in a second forward flight mode.

公开(公告)号：US20210403136A1

公开(公告)日：2021-12-30

申请号：US16916732

申请日：2020-06-30

Applicant: Bell Textron Inc.

Inventor： Joseph Richard Carpenter, JR. ,  Timothy Brian Carr ,  Nicholas Hou ,  William Anthony Amante

IPC: B64C1/06

Abstract: A replaceable web structure for an aircraft frame is described and includes a plurality of structural members fabricated from a first type of material, the replaceable web structure comprising a plurality of web members fabricated from thin sheets of a second type of material, wherein each of the web members is fastened to a web frame of one of the structural members to replace a web portion of the one of the structural members; wherein the second type of material is lighter weight than the first type of material; and wherein the second type of material is more heat-resistant than the first material.

公开(公告)号：US11209453B2

公开(公告)日：2021-12-28

申请号：US16546832

申请日：2019-08-21

Applicant: Bell Textron Inc.

Inventor： Kip Gregory Campbell

IPC: G01P5/02 ,  G01C23/00 ,  G05D1/08

Abstract: According to one implementation of the present disclosure, a method for determining airspeed for an unpowered vehicle is disclosed. The method includes: during flight, determining, by an accelerometer disposed on the unpowered vehicle, first and second accelerometer outputs, where the first and second accelerometer outputs correspond to respective first and second body-fixed load factor measurements; determining an angle-of-attack parameter; determining a body Z-force coefficient based on the angle-of-attack parameter; and determining an airspeed value based on the second body-fixed load factor measurement and the second body-fixed coefficient.

公开(公告)号：US20210371085A1

公开(公告)日：2021-12-02

申请号：US16889608

申请日：2020-06-01

Applicant: Bell Textron Inc.

Inventor： Kip Gregory Campbell

IPC: B64C13/24 ,  B64C39/02 ,  B64C27/50 ,  B64C11/28 ,  G05D1/10

Abstract: An unmanned rotorcraft includes an airframe, rotor blades that are coupled to the airframe for rotation therewith, a propulsion unit having a propeller, and an actuator that is coupled to the airframe and adapted to temporarily reorient the propulsion unit such that an axis of the propeller moves out of alignment with an axis of the rotor blades. Rotation of the propeller causes counter-rotation of the airframe and rotor blades. The rotor blades and blades of the propeller are adapted to deploy from collapsed positions when flight of the rotorcraft is initiated. A method of operation by the rotorcraft includes, when it is determined that a current heading does not correspond to a determined flight path, causing the actuator to temporarily reorient the propulsion unit in accordance with an angular orientation of the actuator relative to the current heading.

公开(公告)号：US11187315B1

公开(公告)日：2021-11-30

申请号：US17034411

申请日：2020-09-28

Applicant: Bell Textron Inc.

Inventor： Aaran Ashley Barnes ,  Eric S. Olson

IPC: F16H57/08 ,  F16H57/023 ,  F16H48/38

Abstract: A ring gear assembly includes a ring gear, a gear box case, and a set of bolts. The ring gear includes a set of gear teeth inside the ring gear and arranged in a circle around the ring gear axis. The ring gear further includes a set of flanges arranged along at least one side of the ring gear. Each flange has a respective flange bolt hole therethrough, and each flange bolt hole has a respective bolt axis that is oriented perpendicular to the ring gear axis. The gear box case has a set of gear box bolt holes therethrough, each gear box bolt hole corresponding to a respective one of the flange bolt holes. Each of the bolts passes through a respective one of the gear box bolt holes and its corresponding flange bolt hole to fasten the ring gear to the gear box case.

公开(公告)号：US11186185B2

公开(公告)日：2021-11-30

申请号：US15609779

申请日：2017-05-31

Applicant: Bell Helicopter Textron Inc.

Inventor： Andrew Haldeman ,  Eric Sinusas ,  Frank Bradley Stamps

IPC: B64D27/24 ,  B60L53/12 ,  B64C27/12 ,  B64C27/82 ,  H02P3/04 ,  B64C27/06 ,  H02P3/14 ,  B64D27/02

Abstract: The present invention includes a system and method for slowing the rotation of a rotor using, for example, rotor brake system for a rotorcraft comprising: one or more generators connected to a main rotor gearbox; an electric distributed anti-torque system mounted on a tail boom of the rotorcraft comprising two or more electric motors connected to the one or more generators, wherein the two or more electric motors are connected to one or more blades; and wherein a rotation of the rotor is slowed by placing a drive load on the main rotor gearbox with the one or more generators to bleed the mechanical power from rotor into electrical power via the two or more electric motors, wherein the electric distributed anti-torque system generates thrust in opposing directions.

公开(公告)号：US20210363782A1

公开(公告)日：2021-11-25

申请号：US16915322

申请日：2020-06-29

Applicant: Bell Textron Inc.

Inventor： William Anthony Amante ,  Arunkumar Koppa Siddalingappa ,  Darpan Bansal

IPC: E05B7/00

Abstract: A handle assembly for an access panel is described and includes a center body portion; first and second handles rotatably connected to the center body portion such that the handles are rotatable toward each other to a first position and away from each other to a second position; and a gear assembly for connecting the first and second handles to the center body portion.

公开(公告)号：US11181187B2

公开(公告)日：2021-11-23

申请号：US15967843

申请日：2018-05-01

Applicant: Bell Helicopter Textron Inc.

Inventor： Scott David Poster ,  Charles Hubert Speller, Jr.

IPC: F16H57/08 ,  C21D9/32 ,  F16H1/28 ,  B64C27/12 ,  C23C8/20 ,  C23C8/24

Abstract: A planetary gear system includes a planetary gear carrier having three or more posts extending from the planetary gear carrier, each post having a hardened exterior surface, and a planet pinion gear in contact with the hardened exterior surface of each post.

公开(公告)号：US20210354815A1

公开(公告)日：2021-11-18

申请号：US16874084

申请日：2020-05-14

Applicant: Bell Textron Inc.

Inventor： Kyle Thomas Cravener

IPC: B64C27/605 ,  B64C27/48

Abstract: Embodiments are directed to a pitch horn assembly for an aircraft comprising a pitch horn rotatably coupled to a connector pin along a first axis using a first set of spherical bearings. The connector pin is rotatably coupled to a housing along a second axis using a second set of spherical bearings. A crank is fixedly coupled to the connector pin, wherein the pitch horn and the crank are configured to commonly rotate relative to the housing.