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公开(公告)号：EP3401751B1
公开(公告)日：2020-03-25
申请号：EP17178494.5
申请日：2017-06-28
Applicant: Bell Helicopter Textron Inc.
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公开(公告)号：EP3712062A1
公开(公告)日：2020-09-23
申请号：EP20154974.8
申请日：2020-01-31
Applicant: Bell Helicopter Textron Inc.
Inventor： SMITH, Michael Reaugh , CHOI, Jouyoung Jason , CARPENTER, Joseph Richard , LOVELAND, Steve Michael
Abstract: In some examples, an aircraft (600) comprises an airframe (602), a rotor system (604a, 604b) coupled to the airframe (602), and a vibration attenuation system (610). The rotor system (604a, 604b) is operable to exert a vibratory force on the airframe (602). The vibration attenuation system (610) comprises two or more batteries (606) and elastic devices (608). The two or more batteries (606) are operable to supply power to the rotor system (604a, 604b). The elastic devices (608) coupled to the two or more batteries (606) and the airframe (602). The elastic devices (608) are configured to attenuate the vibratory force based on facilitating oscillation of the two or more batteries (606). In other examples, a method comprises coupling elastic devices (608) to two or more batteries (606) and an airframe (602) of an aircraft (600). The elastic devices (608) receiving a vibratory force via the airframe (602) and attenuate the vibratory force based on facilitating oscillation of the two or more batteries (606).
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Patent Agency Ranking
公开(公告)号：EP3401751A1
公开(公告)日：2018-11-14
申请号：EP17178494.5
申请日：2017-06-28
Applicant: Bell Helicopter Textron Inc.
Inventor： BOTHWELL, Christopher Mike , ALFRED, Jillian Samantha , KIM, Sung Kyun , VUGA, Marko , HENDRICKS, Matthew , WASIKOWSKI, Mark , PARHAM, Thomas , SMITH, Michael Reaugh
Abstract: In accordance with an embodiment of the present invention, a method of operating a rotorcraft (101) includes receiving a measured yaw rate from a yaw rate sensor or a measured lateral acceleration from a lateral acceleration sensor of the rotorcraft (101), filtering the measured yaw rate or the measured lateral acceleration using a filter to form a filtered measured yaw rate or a filtered measured lateral acceleration , and regulating a yaw rate or a lateral acceleration of the rotorcraft based on the measured yaw rate or the measured lateral acceleration. The filter includes a bandpass characteristic or a notch characteristic, and the filtering is configured to reduce lateral vibrations caused by airflow in a tail section (123) of the rotorcraft (101).
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公开(公告)号：EP3241756B1
公开(公告)日：2018-08-01
申请号：EP16172307.7
申请日：2016-05-31
Applicant: Bell Helicopter Textron Inc.
Inventor： PERYEA, Martin , SMITH, Michael Reaugh , HAMELWRIGHT Jr., Douglas , BRAND, Albert G. , PLAGIANOS, Nicholas J. , EMRICH, Joshua , CARR, Timothy
IPC: B64D37/04
Abstract: A rotorcraft (10) includes a fuselage (16) having a fuel tank receiving assembly (24) with a fuel tank (28) positioned therein. The fuel tank (28) including a plurality of interconnected fuel bags operable to contain liquid fuel. A network of straps is disposed about the fuel tank (28) forming a restraint assembly (130; 172; 182; 202). The network of straps includes at least one perimeter strap (132, 134, 136, 138, 140) extending at least partially about at least two fuel bags and at least one surrounding strap (142, 144, 146) extending at least partially about the at least two fuel bags. The at least one perimeter strap (132, 134, 136, 138, 140) has at least two intersections (156, 158) with the at least one surrounding strap (142, 144, 146).
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公开(公告)号：EP3375710B1
公开(公告)日：2019-04-10
申请号：EP18155504.6
申请日：2018-02-07
Applicant: Bell Helicopter Textron Inc.
IPC: B64C27/00
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公开(公告)号：EP3375710A1
公开(公告)日：2018-09-19
申请号：EP18155504.6
申请日：2018-02-07
Applicant: Bell Helicopter Textron Inc.
IPC: B64C27/00
CPC classification number: B64C27/001 , B64C27/10 , B64C27/22 , B64C27/82 , B64C2027/002 , B64C2027/8236 , B64C2027/8281
Abstract: A vibration isolation system (208) for an advancing blade concept rotorcraft (200) having a pylon assembly (202) and an airframe (222). The vibration isolation system (208) includes one or more pylon links (210; 212) each having first and second ends with the first end (214; 216) coupled to the pylon assembly (202) and the second end (218; 220) coupled to the airframe (22). Each pylon link (210; 212) includes a vibration isolator (228; 230), such as a Liquid Inertia Vibration Eliminator unit (232), that is interposed between the pylon assembly (202) and the airframe (222). The vibration isolator system (208) is operable to reduce or eliminate transmission of the pylon assembly (202) vibration to the airframe (222).
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公开(公告)号：EP3241756A1
公开(公告)日：2017-11-08
申请号：EP16172307.7
申请日：2016-05-31
Applicant: Bell Helicopter Textron Inc.
Inventor： PERYEA, Martin , SMITH, Michael Reaugh , HAMELWRIGHT Jr., Douglas , BRAND, Albert G. , PLAGIANOS, Nicholas J. , EMRICH, Joshua , CARR, Timothy
IPC: B64D37/04
Abstract: A rotorcraft (10) includes a fuselage (16) having a fuel tank receiving assembly (24) with a fuel tank (28) positioned therein. The fuel tank (28) including a plurality of interconnected fuel bags operable to contain liquid fuel. A network of straps is disposed about the fuel tank (28) forming a restraint assembly (130; 172; 182; 202). The network of straps includes at least one perimeter strap (132, 134, 136, 138, 140) extending at least partially about at least two fuel bags and at least one surrounding strap (142, 144, 146) extending at least partially about the at least two fuel bags. The at least one perimeter strap (132, 134, 136, 138, 140) has at least two intersections (156, 158) with the at least one surrounding strap (142, 144, 146).
Abstract translation: 一种旋翼飞行器（10）包括具有燃料箱接收组件（24）的机身（16），燃料箱（28）位于其中。 燃料箱（28）包括多个可操作以容纳液体燃料的互连燃料箱。 围绕形成约束组件（130; 172; 182; 202）的燃料箱（28）设置有网带。 所述带的网络包括至少一个周边带（132,134,136,138,140），所述至少一个周边带至少部分地围绕至少两个燃料袋延伸，所述至少一个周围带（142,144,146）至少部分地围绕 至少两个燃料袋。 所述至少一个周边带（132,134,136,138,140）具有与所述至少一个周围带（142,144,146）的至少两个交叉点（156,158）。
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