公开(公告)号：US11965376B2

公开(公告)日：2024-04-23

申请号：US17676537

申请日：2022-02-21

Applicant: Bell Textron Inc.

Inventor： Savithramma Narayanappa ,  Vitthal Vishnuthreeth Arakeri ,  Bobby Howard Mosier

IPC: E05F5/06 ,  E05C17/20 ,  E05D5/06 ,  E05D11/10

CPC classification number: E05F5/06 ,  E05C17/203 ,  E05D5/062 ,  E05D11/1085 ,  E05Y2900/531

Abstract: Disclosed is an assembly and a vehicle and apparatus including the assembly, for maintaining a vehicle door in an open position may include at least one rod member configured to connect at a first end to the door and at a second end to a vehicle frame. A tab may be connected to and extend in at least one direction from the rod member. A plunger may be configured to be anchored in the door and including a pin configured to extend from and retract into the plunger. The pin may be configured to engage the tab when extended and disengage from the tab when retracted.

公开(公告)号：US11905040B2

公开(公告)日：2024-02-20

申请号：US17073179

申请日：2020-10-16

Applicant: Bell Textron Inc.

Inventor： Frédéric Laliberté

IPC: B64F5/60 ,  B62B1/12 ,  B62B1/00

CPC classification number: B64F5/60 ,  B62B1/004 ,  B62B1/12 ,  B62B2301/00

Abstract: A cart for supporting a part to be inspected in a non-destructive testing (NDT) machine. The cart includes a base with wheels, a first support extending upright from the base, a second support extending upright from the base, and mounting fixtures being removably attachable to the first and second supports and having mounting ends engageable with the part to support the part from the first support or the second support. The base is displaceable with the wheels to enter and exit the NDT machine. The cart is lockable upon being within the NDT machine to secure the cart in position.

公开(公告)号：US11884385B2

公开(公告)日：2024-01-30

申请号：US17026394

申请日：2020-09-21

Applicant: Bell Textron Inc.

Inventor： David E. Heverly, II ,  Jeremy DeWaters ,  Frank B. Stamps

IPC: B64C27/00 ,  B64C29/00

CPC classification number: B64C27/001 ,  B64C29/0033 ,  B64C2027/003

Abstract: A vibration control system for a rotor hub provides vibration attenuation in an aircraft by reducing the magnitude of rotor induced vibratory. The system can include a force generating device attached to a rotor hub which rotates along with the rotor at the rotational speed of the rotor. Vibratory shear force is generated by rotating unbalanced weights each about an axis non-concentric with the rotor hub axis at high speed to create large centrifugal forces. The rotational speed of the weights can be a multiple of the rotor rotational speed to create shear forces for canceling rotor induced vibrations. The amplitude of the generated shear force is controlled by indexing the positions of the unbalanced weights relative to each other, while the phase of the shear force is adjusted by equally phasing each weight relative to the rotor.

公开(公告)号：US11873081B2

公开(公告)日：2024-01-16

申请号：US17342963

申请日：2021-06-09

Applicant: Bell Textron Inc.

Inventor： Charles Eric Covington ,  Chia-Wei Su ,  Darren Gregory Lang ,  Thomas Parsons ,  Cody Earl Fegely

IPC: B64C27/12 ,  B64D31/12

CPC classification number: B64C27/12 ,  B64D31/12

Abstract: A rotorcraft has a drive system including a main rotor coupled to a main rotor gearbox to rotate the main rotor at a rotor speed, a main engine coupled to the drive system to provide a first power, a supplemental engine coupled, when a first clutch is engaged, to the drive system to provide a second power additive to the first power, and a control system operable to control the main engine and the supplemental engine to provide a total power demand, where the main engine is controlled based on variations in rotor speed and a power compensation command to produce the first power, and the supplemental engine is controlled to produce the second power in response to a supplemental power demand.

公开(公告)号：US11814176B2

公开(公告)日：2023-11-14

申请号：US17362252

申请日：2021-06-29

Applicant: Bell Textron Inc.

Inventor： Jean St-Pierre ,  William Morin

IPC: B64D11/06 ,  B64C1/20

CPC classification number: B64D11/0619 ,  B64C1/20 ,  B64D11/0696

Abstract: A safety system for aircraft passenger seats is described. A pallet that can be removably coupled to seats can also be removably coupled to the aircraft floor and one or more brackets, tension fittings, or machined straps that can be coupled to structural beams or components in an aircraft. A keel tension fitting can be attached to a keel beam and then be coupled to the pallet and thereby the seats. By attaching to the keel beam the safety system allows the seating arrangement (pallet and seats) to withstand greater stresses and forces, resulting in increased safety.

公开(公告)号：US11814153B2

公开(公告)日：2023-11-14

申请号：US17552052

申请日：2021-12-15

Applicant: Bell Textron Inc.

Inventor： Kyle Thomas Cravener ,  Andrew Maresh ,  Jonathan Andrew Knoll

IPC: B64C11/28 ,  B64C29/00 ,  B64C27/28 ,  B64C11/04

CPC classification number: B64C11/28 ,  B64C11/04 ,  B64C27/28 ,  B64C29/0033

Abstract: A system for retaining a folded proprotor blade in flight. The system includes a mounting plate, a first arm coupled to the mounting plate at an acute angle relative to the mounting plate, and a first deformable pad affixed to the first arm and adapted to contact the folded proprotor blade.

公开(公告)号：US11753154B2

公开(公告)日：2023-09-12

申请号：US17370817

申请日：2021-07-08

Applicant: Bell Textron Inc.

Inventor： Matthew P. Misiorowski ,  Joseph H. Schmaus

IPC: B64C27/605 ,  B64C27/00 ,  B64C29/00

CPC classification number: B64C27/001 ,  B64C27/605 ,  B64C29/0033

Abstract: A control system for a multi-rotor aircraft is described that results in lower operating noise. Allowing blades to flap during flight reduces aerodynamic interference as blades pass by other aircraft components, such as wings or the fuselage. Pitch links coupled to a rotational swashplate can be used to allow flapping during flight. The swashplates can allow the canting of the rotors to change a rotational or out-of-plane angle of the blades to decrease noise.

公开(公告)号：US11749820B2

公开(公告)日：2023-09-05

申请号：US17339572

申请日：2021-06-04

Applicant: Bell Textron Inc.

Inventor： Joseph Dean Rainville

IPC: H01M8/04746 ,  B60L50/70 ,  B60L58/30 ,  B64D41/00 ,  H01M8/04111 ,  H01M8/0438

CPC classification number: H01M8/04753 ,  B60L50/70 ,  B60L58/30 ,  B64D41/00 ,  H01M8/04111 ,  H01M8/04425 ,  B60L2200/10 ,  B64D2041/005 ,  H01M2250/20

Abstract: A method of operating an aircraft includes providing a fuel cell system to power the aircraft, providing an airflow path through the fuel cell system, sensing a change mass air flow rate supplied to a compressor of the fuel cell system, and at least one of adjusting a restriction of airflow entering the airflow path in response to the sensed change in mass air flow rate, adjusting a restriction of airflow exiting the airflow path in response to the sensed change in mass air flow rate, and adjusting an air scoop to gather a different amount of air into the airflow path. A method of operating an aircraft includes sensing a change in ambient pressure supplied to an airflow path and adjusting a restriction of airflow exiting the airflow path in response to a sensed change in ambient pressure.

公开(公告)号：US11745853B2

公开(公告)日：2023-09-05

申请号：US16821266

申请日：2020-03-17

Applicant: Bell Textron Inc.

Inventor： Andrew Ryan Maresh ,  Kyle Thomas Cravener

IPC: B64C11/02 ,  B64C27/35 ,  B64C29/00 ,  B64C11/28 ,  F16D3/26

CPC classification number: B64C11/02 ,  B64C11/28 ,  B64C27/35 ,  B64C29/0033 ,  F16D3/26

Abstract: Embodiments are directed to a rotor hub assembly comprising a yoke configured to attach rotor blades thereto, a single Hooke's joint configured to attach to, and transmit forces between, a mast and the yoke, and a spherical bearing coupled between the yoke and the mast. Two pillow blocks couple the single Hooke's joint to the yoke. An adapter sleeve is attached to the pillow blocks and is positioned to surround the spherical bearing. The adapter sleeve extends between the single Hooke's joint and the mast. A hub lock extension is attached to the yoke. The hub lock extension is configured to receive a hub lock that prevents gimballing of the yoke when engaged.

公开(公告)号：US11738887B2

公开(公告)日：2023-08-29

申请号：US17118265

申请日：2020-12-10

Applicant: Bell Textron Inc.

Inventor： Steve Cates ,  Caydn White ,  Kevin Brooker

IPC: B64F5/60 ,  B64C27/00 ,  G01N23/207

CPC classification number: B64F5/60 ,  B64C27/006 ,  G01N23/207 ,  G01N2223/056 ,  G01N2223/607 ,  G01N2223/632 ,  G01N2223/646

Abstract: A method of evaluating fatigue damage of a rotor mast. The method includes performing an x-ray diffraction (“XRD”) inspection of the rotor mast, assessing fatigue damage sustained by the rotor mast based on results of the XRD inspection, and determining whether the rotor mast is suitable for continued use based on the assessed fatigue damage.