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：US10336447B2

公开(公告)日：2019-07-02

申请号：US14957321

申请日：2015-12-02

Applicant: Bell Helicopter Textron Inc.

Inventor： Chyau-Song Tzeng ,  Troy Cyril Schank

IPC: B64C27/54 ,  B64C29/00 ,  B64C11/28 ,  B64C27/30

Abstract: A gimbal lock mechanism for a rotor hub can include a cam member having a cuff lock lobe and a gimbal lock lobe. The cam member is configured so that rotation can cause the first cuff lobe to become adjacent to the root end of the rotor blade and at the same time causes the gimbal lock lobe to become adjacent to a gimbal so as to inhibit gimbaling of the gimbal. A first moveable pin can be located on the root end portion of the rotor blade and inserted into the cuff lock lobe to prevent pitch change of the rotor blade.

公开(公告)号：US10334332B1

公开(公告)日：2019-06-25

申请号：US16115894

申请日：2018-08-29

Applicant: Bell Helicopter Textron Inc.

Inventor： Scott David Poster ,  Brian Edward Tucker

IPC: G08B21/00 ,  H04Q9/00 ,  B64D45/00 ,  G07C5/00

Abstract: A method for operating a sensor system includes detecting a first wake trigger by a plurality of sensors for a component disposed in a remote location, generating, by each sensor, sensor service data that includes a battery charge level of the sensor, determining an active sensor according to the sensor service data of each sensor of the plurality of sensors, and assigning the active sensor to enter an active mode assigning each sensor of the plurality of sensors, other than the active sensor, to enter a sleep mode, generating, by the active sensor, sensor reading data for the component until an inactive trigger is detected, sending the sensor reading data using a wireless transmission to a sensor data server, and leaving the active mode by the active sensor and entering a sleep mode in response to the active sensor detecting an inactive trigger.

公开(公告)号：US10329014B2

公开(公告)日：2019-06-25

申请号：US15606213

申请日：2017-05-26

Applicant: Bell Helicopter Textron Inc.

Inventor： John Richard McCullough ,  Paul K. Oldroyd

IPC: B64C29/00 ,  B64C3/10 ,  B64C3/32 ,  B64C11/46 ,  B64C5/10

Abstract: An aircraft has a vertical takeoff and landing fight mode and a forward flight mode. The aircraft includes an airframe with first and second M-wings each having a pair of leading apexes with swept forward and swept back portions extending therefrom at a swept angle. A propulsion system includes a plurality of propulsion assemblies each attached to the airframe proximate one of the leading apexes. Each of the propulsion assemblies includes a rotor assembly having a tilting degree of freedom. A flight control system is operable to control the propulsion assemblies including tilting the rotor assemblies to generate variable thrust vectors that have a maximum angle that is generally congruent with the swept angles of the M-wings.

公开(公告)号：US20190185151A1

公开(公告)日：2019-06-20

申请号：US15845810

申请日：2017-12-18

Applicant: Bell Helicopter Textron Inc.

Inventor： Jared Mark PAULSON ,  Tyler Wayne BALDWIN ,  Kyle Thomas CRAVENER

IPC: B64C27/50 ,  B64C3/56

Abstract: A folding yoke comprising a bilateral center yoke pivotally connected to separate foldable yoke arms permits rotor blade fold about a single through bolt connection inboard of a set of bearings. In use, the compact folded arrangement of the rotor blades reduces folded aircraft dimensions in response to ever increasing restricted storage space parameters.

公开(公告)号：US10315761B2

公开(公告)日：2019-06-11

申请号：US15200261

申请日：2016-07-01

Applicant: Bell Helicopter Textron Inc.

Inventor： John Richard McCullough ,  Paul K. Oldroyd

IPC: B64C29/00 ,  B64D37/04 ,  B64C11/28 ,  B64D35/00 ,  B64C27/50 ,  B64C39/02 ,  B64D25/12

Abstract: In some embodiments, a propulsion assembly for an aircraft includes a nacelle, at least one self-contained fuel tank disposed within the nacelle operable to contain a liquid fuel, an engine disposed within the nacelle operable to run on the liquid fuel, a drive system mechanically coupled to the engine and operable to rotate responsive to rotation of the engine, a rotor hub mechanically coupled to the drive system operable to rotate responsive to rotation of the drive system and a proprotor mechanically coupled to the rotor hub and operable to rotate therewith.

公开(公告)号：US20190173296A1

公开(公告)日：2019-06-06

申请号：US15830875

申请日：2017-12-04

Applicant: Bell Helicopter Textron Inc.

Inventor： Gary S. Froman

IPC: H02J7/00 ,  H02J7/34 ,  G01R31/00 ,  B64D43/00

Abstract: In one embodiment, an aircraft electronics system includes a hardware processor, a charge collection circuit to collect charge; a switching circuit controlled by the hardware processor to discharge the charge collected on the charge collection circuit through a bonding circuit formed from a chassis and a bonding surface; and a voltage measurement circuit to measure a voltage difference between measurement terminals across the chassis and the bonding surface.

公开(公告)号：US20190168892A1

公开(公告)日：2019-06-06

申请号：US16204995

申请日：2018-11-29

Applicant: Bell Helicopter Textron Inc.

Inventor： Jeffrey P. Nissen ,  Edward Hohman ,  Robert J. Barry

IPC: B64F5/60 ,  H04N5/33 ,  G06T7/00 ,  G06T5/00 ,  G01N21/3581 ,  G01N21/95

Abstract: A field deployable infrared imaging (FDIR) system and method for inspecting a composite component comprises a hand-held long-wave IR camera to capture a thermal image of the composite component, wherein the camera has an adjustable temperature control that captures an image with a 10 degree working range, a frame capture rate of at least 1 second for a length of time of not less than 90 seconds; and a processor for post-processing the thermal image using a second order derivative algorithm wherein the post-processed thermal image shows the defect better than the captured infrared image, and detects the one or more defects in the composite component.

公开(公告)号：US10308356B2

公开(公告)日：2019-06-04

申请号：US15359594

申请日：2016-11-22

Applicant: Bell Helicopter Textron Inc.

Inventor： Dalton T Hampton ,  Thomas Clement Parham, Jr.

IPC: B64C27/32 ,  B64C27/35 ,  B64C27/43 ,  B64C27/78 ,  B64C27/82

Abstract: A rotor hub assembly for a rotorcraft includes a yoke forming a bearing bore. The yoke has a teetering axis extending through the bearing bore. The rotor hub assembly includes a flapping bearing disposed in the bearing bore. The flapping bearing is operable to regulate teetering of the yoke about the teetering axis. The rotor hub assembly includes an axial spring abutting the flapping, thereby reducing movement of the flapping bearing along the teetering axis.

公开(公告)号：US10301010B2

公开(公告)日：2019-05-28

申请号：US15298693

申请日：2016-10-20

Applicant: Bell Helicopter Textron Inc.

Inventor： David E. Heverly, II

IPC: B64C27/00 ,  F04C2/10 ,  F04C14/14 ,  F04C15/06

Abstract: An oscillating pump system includes a pump operable to circulate a fluid. The pump has a first port stage including an inlet port and an outlet port and a second port stage including a first oscillating port and a second oscillating port. An oscillator disk is disposed between the first port stage and the second port stage. The oscillator disk is rotatable relative to the inlet port, the outlet port, the first oscillating port and the second oscillating port. During rotation, the oscillator disk alternatingly routes the fluid to the inlet port from the first and second oscillating ports and alternatingly routes the fluid from the outlet port to the first and second oscillating ports, thereby generating oscillating fluid flow.