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公开(公告)号：US20180297689A1
公开(公告)日：2018-10-18
申请号：US15490796
申请日：2017-04-18
Applicant: Bell Helicopter Textron Inc.
Abstract: In one embodiment, a horizontal stabilizer spar is held on the empennage of a rotorcraft by saddle fittings clamping the stabilizer spar at positions spaced apart along a longitudinal direction of the stabilizer spar. Stabilizer mounts are connected at respective ends to the saddle fittings and to vertical spars on the empennage. At least one of the stabilizer mounts is constructed to allow movement of the saddle fittings with respect to the vertical spars with at least four directions of freedom. The movable stabilizer mount is floatingly attached to a vertical spar, while the saddle fittings are connected to the respective stabilizer mounts by way of spherical bearings.
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公开(公告)号：US10407154B2
公开(公告)日：2019-09-10
申请号：US15490796
申请日：2017-04-18
Applicant: Bell Helicopter Textron Inc.
Abstract: In one embodiment, a horizontal stabilizer spar is held on the empennage of a rotorcraft by saddle fittings clamping the stabilizer spar at positions spaced apart along a longitudinal direction of the stabilizer spar. Stabilizer mounts are connected at respective ends to the saddle fittings and to vertical spars on the empennage. At least one of the stabilizer mounts is constructed to allow movement of the saddle fittings with respect to the vertical spars with at least four directions of freedom. The movable stabilizer mount is floatingly attached to a vertical spar, while the saddle fittings are connected to the respective stabilizer mounts by way of spherical bearings.
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公开(公告)号：US20190315076A1
公开(公告)日：2019-10-17
申请号：US15951165
申请日：2018-04-11
Applicant: Bell Helicopter Textron Inc.
Inventor： Sébastien Duval , Pascal Flynn-Robitaille
IPC: B29C70/38 , B29C70/20 , B29C70/88 , B32B5/12 , B32B5/26 , B32B7/00 , B32B7/02 , B64C1/06 , G06F17/50
Abstract: Methods and systems for automated placement of composite material on a surface of a component, the composite material including unidirectional fibers, is provided. A set of fiber paths along the surface is established, the set of fiber paths comprising at least one ply, each ply comprising a respective plurality of fiber paths being substantially aligned with a respective direction. An isotropy factor for the component is determined based on the set of fiber paths, the isotropy factor being indicative of a distribution of the plurality of fiber paths on the surface. When the isotropy factor exceeds a predetermined threshold, a respective layer of composite material is applied to the surface of the component using an automated fiber placement machine and for each of the at least one ply, wherein the unidirectional fibers of the composite material are applied along the set of fiber paths.
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公开(公告)号：US12109764B2
公开(公告)日：2024-10-08
申请号：US15951165
申请日：2018-04-11
Applicant: Bell Helicopter Textron Inc.
Inventor： Sébastien Duval , Pascal Flynn-Robitaille
IPC: B29C70/38 , B29C70/20 , B29C70/88 , B32B5/12 , B32B5/26 , B32B7/02 , B32B7/03 , B64C1/06 , G06F30/15 , G06F30/23 , B29L31/30 , B64C1/00 , G06F113/26
CPC classification number: B29C70/382 , B29C70/205 , B29C70/88 , B32B5/12 , B32B5/26 , B32B7/02 , B32B7/03 , B64C1/06 , G06F30/15 , G06F30/23 , B29L2031/3076 , B32B2307/514 , B32B2307/708 , B32B2605/18 , B64C2001/0072 , G06F2113/26
Abstract: Methods and systems for automated placement of composite material on a surface of a component, the composite material including unidirectional fibers, is provided. A set of fiber paths along the surface is established, the set of fiber paths comprising at least one ply, each ply comprising a respective plurality of fiber paths being substantially aligned with a respective direction. An isotropy factor for the component is determined based on the set of fiber paths, the isotropy factor being indicative of a distribution of the plurality of fiber paths on the surface. When the isotropy factor exceeds a predetermined threshold, a respective layer of composite material is applied to the surface of the component using an automated fiber placement machine and for each of the at least one ply, wherein the unidirectional fibers of the composite material are applied along the set of fiber paths.
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