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특허 상세정보

Hollow blade for a turbomachine and method of manufacturing said blade

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B23P-015/00   
미국특허분류(USC) 29/8897 ; 416/233
출원번호 US-0111892 (1993-08-26)
우선권정보 FR-0010470 (1992-09-02); JP-0234982 (1992-09-02)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 13  인용 특허 : 0

A hollow blade for a turbomachine comprises a unitary body having a multiplicity of transverse cavities in at least the airfoil shaped portion of the blade, and plugs disposed within the cavities and restoring the surface continuity of the intrados and extrados faces of the aerofoil shaped portion, the plugs being rigidly secured to the unitary body, such as by welding.


A method of manufacturing a hollow blade for a turbomachine comprising the following steps: a) producing a unitary blade blank by forging, said blade blank including an airfoil shaped portion; b) machining a multiplicity of holes in said airfoil shaped portion such that a zone of specific width is left clear at the edge of said airfoil shaped portion and said holes are substantially evenly distributed over the remaining area of said airfoil portion and provide a cavity ratio of about 90% in said remaining area; c) producing plugs with a shape adapted to ...

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  10. Eilert, Theodore J.; Harkins, Henry D.; Kornfeld, Roger E.; Breer, Marlin D.. Preform for forming complex contour structural assemblies. USP2011017866535.
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  13. Lewis, Thomas M.; Parin, Michael L.. Vibration damping apparatus for windows using viscoelastic damping materials. USP2010057721844.