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公开(公告)号：US20220126991A1
公开(公告)日：2022-04-28
申请号：US17082601
申请日：2020-10-28
Applicant: Bell Textron Inc.
Inventor： Aaron Alexander Acee , Andrew Paul Haldeman , Paul Wayne Woolbright , Timothy McClellan Mosig
Abstract: A rotor system includes a drive hub, a set of rotor blades extending radially from the drive hub, and a set of tension-torsion straps connecting the rotor blades to the drive hub. The drive hub has a rotor mast opening extending along a mast axis. The rotor system is configured to rotate about the mast axis. The drive hub further has a set of mounting slots for mounting the tension-torsion straps. The mounting slots are arranged along a circle around the drive hub, each mounting slot extending through the drive hub along a respective mounting axis. The mounting axis of each of the mounting slots is biased relative to the mast axis. The tension-torsion straps are mounted to the drive hub at their corresponding mounting slots.
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公开(公告)号：US20220111952A1
公开(公告)日：2022-04-14
申请号：US17067723
申请日：2020-10-11
Applicant: Bell Textron Inc.
Inventor： Alexander Dang Quang Truong
Abstract: A rotor system has a mast axis, a first rotor rotatable about the mast axis in a first direction and the first rotor has a first number of first rotor blades, and a second rotor rotatable about the mast axis in a second direction and the second rotor has a second number of second rotor blades that is different than the first number. The second direction is opposite the first direction.
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公开(公告)号：US11300199B2
公开(公告)日：2022-04-12
申请号：US15709904
申请日：2017-09-20
Applicant: Bell Helicopter Textron Inc.
Inventor： Scott David Poster , Walter Riley , Gary Cope , Charles Hubert Speller, Jr.
Abstract: A non-pressurized accessory gearbox for an aircraft includes: a housing, one or more gears disposed within the housing, an input rotating member to receive input from a main rotor gearbox via a shaft connected to the one or more gears, and one or more output rotating members in communication with the one or more gears. The gearbox is configured to utilize splash lubrication for moving a lubrication fluid within the housing.
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公开(公告)号：US11298899B2
公开(公告)日：2022-04-12
申请号：US16450739
申请日：2019-06-24
Applicant: Bell Helicopter Textron Inc.
Inventor： Suvankar Mishra , Vance Newton Cribb, III
Abstract: A method of repairing a composite structure includes providing an assembled composite structure comprising a substantially rigid outer component, wherein the composite structure comprises a void space at least partially bounded by the outer component. The method further includes forming an injection hole through the outer component to provide a path between the void space and space external to the composite structure. The method further includes injecting foam into the void space through the injection hole while the foam is in a substantially unexpanded state and expanding the foam within the void space.
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公开(公告)号：US20220097839A1
公开(公告)日：2022-03-31
申请号：US17036942
申请日：2020-09-29
Applicant: Bell Textron Inc.
Inventor： William Anthony AMANTE , Timothy Brian CARR
Abstract: In an embodiment, a ducted fan assembly includes a housing that further includes a rotor. The ducted fan assembly also includes a rim that defines an opening surrounding at least a portion of the housing. The ducted fan assembly also includes a movable leading edge that is attached to the rim and extends around at least a portion of a perimeter of the ducted fan assembly, where the movable leading edge is adjustable between at least a first position and a second position.
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Patent Agency Ranking
公开(公告)号：US11286047B2
公开(公告)日：2022-03-29
申请号：US16841050
申请日：2020-04-06
Applicant: Bell Textron Inc.
Inventor： James Everett Kooiman , Jeffrey Matthew Williams , Clegg Benjamin Brian Smith , Michael E. Rinehart , Franklin Foster Caldwell , Tjepke Heeringa
Abstract: A system is described and includes a rack for carrying payload disposed in a payload bay; and a payload extension assembly for affecting linear translation of the rack between a first position in which the rack is fully retracted within the payload bay and a second position in which the payload extension assembly is fully extended and the rack is supported outside the payload bay. The payload extension assembly comprises forward and aft tracks respectively attached to forward and aft walls of the payload bay; a first stage for providing linear translation of the rack relative to the forward and aft tracks; and a second stage for providing linear translation of the rack relative to the first stage. The system further comprises a payload actuator system for selectively causing the rack extension assembly to move the rack between the first and second positions.
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公开(公告)号：US11281236B2
公开(公告)日：2022-03-22
申请号：US16257651
申请日：2019-01-25
Applicant: Bell Helicopter Textron Inc.
Inventor： Yann Lavallee , Eric Albert Sinusas , Robert Patrick Wardlaw
Abstract: A yaw control system for a rotorcraft featuring a floor mounted pair of pedals configured to measure an up and down motion of a pair of pedals and utilize that up and down motion as a yaw moment control input. The pair of pedals can rock laterally, fore and aft, or vertically. The pair of pedals can be mechanically interconnected to other pairs of pedals or electrically interconnected to duplicate motion across pairs of pedals.
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公开(公告)号：US11279477B2
公开(公告)日：2022-03-22
申请号：US16358268
申请日：2019-03-19
Applicant: Bell Textron Inc.
Inventor： Aaron Alexander Acee , Andrew Paul Haldeman
Abstract: An exemplary anti-torque system for a helicopter includes two or more electric fans rotatably mounted on a tail boom, the two or more electric fans rotatable about a longitudinal axis of the tail boom.
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公开(公告)号：US20220074485A1
公开(公告)日：2022-03-10
申请号：US17512974
申请日：2021-10-28
Applicant: Bell Textron Inc.
Inventor： Scott David Poster
IPC: F16H57/04
Abstract: A bypass apparatus for lubricant in an unregulated pressurized gearbox including: a block including a lubricant inlet in fluid communication with a pressure relief valve, wherein the pressure relief valve diverts lubricant into the gearbox or into an oil filter, wherein lubricant is returned to the gearbox when the lubricant is cold and/or pressure at the pressure relief valve is high to reduce damage to the gearbox caused by high pressure during a cold start, and when the lubricant temperature increases and the pressure is reduced the pressure relief valve closes and lubricant enters the oil filter.
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公开(公告)号：US20220073197A1
公开(公告)日：2022-03-10
申请号：US17511724
申请日：2021-10-27
Applicant: Bell Textron Inc.
Inventor： Carlos Fenny , Thomas Dewey Parsons , Erik John Oltheten
Abstract: The present invention includes an a plurality of first variable speed motors mounted on a tail boom of the helicopter; one or more fixed pitch blades attached to each of the plurality of first variable speed motors; and wherein a speed of one or more of the plurality of first variable speed motors is varied to provide an anti-torque thrust.
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