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公开(公告)号：US11208204B2
公开(公告)日：2021-12-28
申请号：US15815482
申请日：2017-11-16
Applicant: Bell Helicopter Textron Inc.
Inventor： Christopher E. Foskey , Michael J. Southerland
Abstract: In some embodiments, a rotorcraft may include a yoke, a blade, a spindle associated with the yoke, and an elastomeric bearing assembly. The center length of the spindle may define a center axis that passes through a center of the elastomeric bearing assembly. The elastomeric bearing assembly may contain a housing coupled to the blade and disposed around the center axis that is configured to rotate in relation to the center axis. The elastomeric bearing assembly may contain an elastomeric shear bearing that has an interior portion coupled to the spindle and an exterior portion coupled to the housing. The elastomeric bearing assembly may contain an elastomeric centrifugal force bearing pressed against the housing. The shear bearing may be configured to counteract a torsional force, and the centrifugal force bearing may be configured to counteract a compression force.
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公开(公告)号：US11014656B2
公开(公告)日：2021-05-25
申请号：US15627819
申请日：2017-06-20
Applicant: Bell Helicopter Textron Inc.
Inventor： Jared Mark Paulson , Bryan Marshall , Christopher E. Foskey
Abstract: The present invention includes a balancing system that includes a weight box, mounted substantially within the rotor-blade spar, flush with a rotor-blade spar outer surface, operably accessible from a rotor-blade tip, and retained within the rotor-blade spar by a weight-box retention pin, one or more weight-box contact surfaces bonded to a rotor-blade-spar inner surface, or a weight-box lip providing a bearing contact with an edge of a spar rotor-blade spar cutout; and a weight package attached to the weight box, the weight package including a weight-box cover, two or more weight guide-rods attached to the weight-box cover, wherein one of the two or more weight guide-rods is positioned forward of a pitch change axis or center of twist and wherein one of the two weight guide-rods is positioned aft of the pitch change axis or center of twist, and one or more balance weights mounted on the weight guide-rods.
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公开(公告)号：USD891351S1
公开(公告)日：2020-07-28
申请号：US29636525
申请日：2018-02-08
Applicant: Bell Helicopter Textron Inc.
Designer： Christopher E. Foskey , Brendan P. Lanigan
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公开(公告)号：US20180346133A1
公开(公告)日：2018-12-06
申请号：US15608385
申请日：2017-05-30
Applicant: Bell Helicopter Textron Inc.
IPC: B64D15/12 , H05B3/02 , B64C27/46 , B64C27/467
Abstract: The present invention includes a first barrier layer configured to cover a leading edge of the blade or wing; one or more electrical bus bars disposed on the first barrier layer proximate to and substantially parallel with the leading edge; a ground bus bar disposed on the first barrier layer proximate to and substantially parallel with the leading edge; a second barrier layer disposed over the one or more electrical bus bars and the ground bus bar; one or more heating elements disposed on the second barrier layer, and each heating element electrically connected to one of the electrical bus bars and to the ground bus bar; and a third barrier layer disposed over the one or more heating elements.
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5.发明申请Swashplateless Active Blade Pitch Control with a Mechanical Delta-3 Restraint Having an Instantaneous Blade Pitch-flap Coupling Response 有权具有瞬时叶片间距 - 翼片耦合响应的机械三角-3限制的无盘式主动叶片间距控制公开(公告)号：US20140271203A1
公开(公告)日：2014-09-18
申请号：US13841390
申请日：2013-03-15
Applicant: BELL HELICOPTER TEXTRON INC.
Inventor： Christopher E. Foskey , Frank B. Stamps
CPC classification number: F01D7/00 , B64C27/605 , B64C27/72 , B64C2027/7216 , Y02T50/34 , Y10T29/49316
Abstract: An apparatus comprising a hub configured to couple to a mast, a grip configured to couple to the hub and a rotor blade, a pitch actuator coupled to the grip and configured to change a pitch of the rotor blade relative to the mast, and a delta-3 restraint coupled to the pitch actuator, wherein the delta-3 restraint is fixed relative to the mast. An apparatus comprising a hub configured to couple to a mast, a grip configured to couple to the hub and a rotor blade, a pitch actuator coupled to the grip and configured to change a pitch of the rotor blade relative to the mast, and a delta-3 restraint coupled to the pitch actuator, wherein the delta-3 restraint is configured to control the pitch of the blade relative to the mast when the pitch actuator fails, and wherein the delta-3 restraint provides an instantaneous blade pitch-flap coupling response.
Abstract translation: 一种装置，包括被配置成联接到桅杆的毂，配置成联接到轮毂和转子叶片的把手，连接到把手并被配置为相对于桅杆改变转子叶片的桨距的俯仰致动器，以及三角形 -3约束，其耦合到桨距致动器，其中，Δ-3约束相对于桅杆固定。 一种装置，包括被配置成联接到桅杆的毂，配置成联接到轮毂和转子叶片的把手，连接到把手并被配置为相对于桅杆改变转子叶片的桨距的俯仰致动器，以及三角形 -3限制器，其耦合到所述桨距致动器，其中所述Δ-3约束被配置为当所述桨距致动器故障时控制所述叶片相对于所述桅杆的桨距，并且其中所述Δ-3约束提供瞬时桨叶桨距翼片联接响应 。
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Patent Agency Ranking
公开(公告)号：USD907559S1
公开(公告)日：2021-01-12
申请号：US29636493
申请日：2018-02-08
Applicant: Bell Helicopter Textron Inc.
Designer： Christopher E. Foskey , Brendan P. Lanigan
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公开(公告)号：US10604234B2
公开(公告)日：2020-03-31
申请号：US15843039
申请日：2017-12-15
Applicant: Bell Helicopter Textron Inc.
Inventor： Christopher E. Foskey , Brendan P. Lanigan
IPC: B64C11/18 , B64C11/24 , B64C27/473 , F03D1/06 , B64C29/00
Abstract: In a first aspect, there is a method for improving a lift to drag ratio of a rotor blade, including providing a blade member having a leading edge and a trailing edge; providing a leading edge extension member; and coupling the leading edge extension member to a portion of the leading edge of the blade member to form the rotor blade. In a second aspect, there is a rotor blade including a blade member having a leading edge, and a trailing edge; and a leading edge extension member disposed on the leading edge of the blade member, wherein the leading edge extension member is configured to extend the chord length of at least a portion of the rotor blade. In a third aspect, there is a leading edge extension member for a rotor blade including a convex exterior surface configured to extend at least a portion of the chord length of the rotor blade.
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8.发明申请公开(公告)号：US20180362153A1
公开(公告)日：2018-12-20
申请号：US15627819
申请日：2017-06-20
Applicant: Bell Helicopter Textron Inc.
Inventor： Jared Mark Paulson , Bryan Marshall , Christopher E. Foskey
IPC: B64C27/00 , B64C27/473 , B64C27/82 , F03D13/35
Abstract: The present invention includes a balancing system that includes a weight box, mounted substantially within the rotor-blade spar, flush with a rotor-blade spar outer surface, operably accessible from a rotor-blade tip, and retained within the rotor-blade spar by a weight-box retention pin, one or more weight-box contact surfaces bonded to a rotor-blade-spar inner surface, or a weight-box lip providing a bearing contact with an edge of a spar rotor-blade spar cutout; and a weight package attached to the weight box, the weight package including a weight-box cover, two or more weight guide-rods attached to the weight-box cover, wherein one of the two or more weight guide-rods is positioned forward of a pitch change axis or center of twist and wherein one of the two weight guide-rods is positioned aft of the pitch change axis or center of twist, and one or more balance weights mounted on the weight guide-rods.
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公开(公告)号：US20180229830A1
公开(公告)日：2018-08-16
申请号：US15430956
申请日：2017-02-13
Applicant: Bell Helicopter Textron Inc.
Inventor： Christopher E. Foskey , Michael C. Burnett
CPC classification number: B64C11/28 , B64C27/50 , B64C29/0033
Abstract: An adapter for a rotor blade assembly including a support member having an outboard surface and an inboard surface; an outboard feature extending laterally from the outboard surface of the support member and including a first lug and a second lug; an inboard feature extending laterally from the inboard surface of the support member and including a first arm and a second arm. The outboard feature and the inboard feature are configured such that a plane defined by an attachment surface of at least one of the first lug and the second lug is non-parallel to a plane defined by an attachment surface of at least one of the first arm and the second arm.
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公开(公告)号：US10787267B2
公开(公告)日：2020-09-29
申请号：US15608385
申请日：2017-05-30
Applicant: Bell Helicopter Textron Inc.
Abstract: The present invention includes a first barrier layer configured to cover a leading edge of the blade or wing; one or more electrical bus bars disposed on the first barrier layer proximate to and substantially parallel with the leading edge; a ground bus bar disposed on the first barrier layer proximate to and substantially parallel with the leading edge; a second barrier layer disposed over the one or more electrical bus bars and the ground bus bar; one or more heating elements disposed on the second barrier layer, and each heating element electrically connected to one of the electrical bus bars and to the ground bus bar; and a third barrier layer disposed over the one or more heating elements.
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