- 专利标题: AIRCRAFT ROTOR BLADE WITH REDUCED STRESS
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申请号: US15533502申请日: 2015-10-15
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公开(公告)号: US20170334554A1公开(公告)日: 2017-11-23
- 发明人: Krzysztof Kopanski , Justin Thomas
- 申请人: Sikorsky Aircraft Corporation
- 国际申请: PCT/US15/55719 WO 20151015
- 主分类号: B64C27/473
- IPC分类号: B64C27/473 ; B64C27/06 ; B64C27/00
摘要:
An aircraft rotor blade includes a surface of the rotor blade, at least one main hole that extends through the surface and has a width and a length, and at least one leader hole that extends through the surface and has a length that is less than the length of the main hole and arranged spaced from and adjacent the main hole. The leader hole gradually increases in width from a first end of the leader hole opposite the main hole to an opposed second end of the leader hole proximate the main hole to operatively gradually distribute stress in the leader and main holes and rotor blade and reduce an amount of the stress exerted therein.
公开/授权文献
- US10647420B2 Aircraft rotor blade with reduced stress 公开/授权日:2020-05-12