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公开(公告)号:US20210094677A1
公开(公告)日:2021-04-01
申请号:US16587967
申请日:2019-09-30
Applicant: Bell Textron Inc.
Inventor: Tyler Wayne Baldwin , Jared Mark Paulson , Colin John Thomas , Paul Branson Sherrill , Bryan Huber
IPC: B64C27/00 , F01D5/02 , B64C27/473
Abstract: A balance weight assembly for a rotor blade of a rotorcraft. The balance weight assembly includes a balance weight pocket formed by a balance weight tray and a cover. The balance weight tray has an upper surface including a lip region extending outwardly from a projected region with an outboard boss. A balance weight receiving cavity is recessed from the upper surface and contains a plurality of balance weights. The projected region is disposed within an opening in a hollow blade spar such that the outboard boss of the balance weight tray has a contact relationship with an outboard surface of the opening. The cover is coupled to the balance weight tray such that the lip region of the balance weight tray and at least a portion of the cover have a clamping relationship with the blade spar, thereby coupling the balance weight pocket to the blade spar.
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公开(公告)号:US11891169B2
公开(公告)日:2024-02-06
申请号:US16563732
申请日:2019-09-06
Applicant: Bell Textron Inc.
Inventor: Paul Branson Sherrill , Robert Alan Self
IPC: B64C27/473 , F01D5/14 , B64F5/10 , B29K705/08 , B29C70/48 , B29L31/08
CPC classification number: B64C27/473 , B64F5/10 , F01D5/147 , B29C70/48 , B29K2705/08 , B29L2031/082 , B64C2027/4733 , F05D2230/50 , F05D2300/2263 , F05D2300/44
Abstract: In an implementation, a rotor blade (alternatively referred to herein as “blade”) for a helicopter or other aircraft may include an outer layer. The outer layer may define a cavity. The outer layer may at least partially correspond to an airfoil, e.g., a wing. One or more inserts may be included within the cavity and be encompassed thereby. The first insert may have a density of at least 0.6 pounds per cubic inch.
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公开(公告)号:US20210078699A1
公开(公告)日:2021-03-18
申请号:US16575329
申请日:2019-09-18
Applicant: Bell Textron Inc.
Inventor: Paul Branson Sherrill , Robert Patrick Wardlaw , Robert Alan Self
IPC: B64C27/473 , B64C27/00 , F01D5/28 , B29D99/00
Abstract: In an implementation, a rotor blade for a helicopter may include an outer layer. The outer layer may have a leading edge region and a trailing edge region and may define a cavity. The leading edge region may include a first shape at least partially corresponding with an airfoil, e.g., a wing. An insert may be included within the cavity and be encompassed thereby. The insert may include a shape that substantially corresponds with the first shape, e.g., the insert may substantially correspond with a leading edge of an airfoil. The insert may have a plurality of weight shot each of which may be surrounded by a binding agent.
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公开(公告)号:US20210070433A1
公开(公告)日:2021-03-11
申请号:US16563732
申请日:2019-09-06
Applicant: Bell Textron Inc.
Inventor: Paul Branson Sherrill , Robert Alan Self
IPC: B64C27/473 , F01D5/14 , B64F5/10
Abstract: In an implementation, a rotor blade (alternatively referred to herein as “blade”) for a helicopter or other aircraft may include an outer layer. The outer layer may define a cavity. The outer layer may at least partially correspond to an airfoil, e.g., a wing. One or more inserts may be included within the cavity and be encompassed thereby. The first insert may have a density of at least 0.6 pounds per cubic inch.
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