[특허]Composite blade with partial length spar

[미국특허] Composite blade with partial length spar 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B63H-001/26
출원번호	US-0633566 (1990-12-24)
발명자 / 주소	Carlson Charles E. K. (North Shallott NC) Violette John A. (Granby CT)
출원인 / 주소	United Technologies Corporation (Hartford CT 02)
인용정보	피인용 횟수 : 28 인용 특허 : 12

초록 ▼

A composite axial flow rotary machine blade (50) and method of blade construction is disclosed. A partial-length, spanwisely-disposed hollow spar (20) partially captures a shaped foam core (30) which extends from within the spar\s cavity (26) along a substantial length of the blade (50) in a spanwise fashion. A resin-impregnated high strength, high modulus cloth (34) and graphite (32) composition overlays the spar-core assembly (36) and forms the casing (50) with airfoil regions (52, 54) of the propeller blade (10). This construction results in a rotor blade (50) with enhanced natural frequencies thereby providing for an enhanced operational speed range.

대표청구항 ▼

A rotor blade extending a given spanlength from a flange for mounting the blade to a hub spanwisely to a blade tip and having an airfoil section having a leading edge, a trailing edge and a relatively flat pressure surface extending therebetween on one side of the blade and a relatively flat suction surface extending therebetween on the opposite of the blade, the blade comprising: a spanwisely extending spar having a proximate end that provides the flange for attaching the spar to the hub and a distal end defining a hollow cavity therein and having a flared open end opening to the spar cavity disposed therein, said spar extending for a length ranging from 10% to 50% of the blade spanlength; a spanwisely extending core of lightweight foam filler extending from a proximate end disposed within the spar cavity through the opening and beyond the flared open end of the distal end of the spar a predetermined spanwise distance to a distal end of the blade tip; a first laminate wrap formed of a plurality of cloth layers disposed about the spar and the core, the first laminate wrap having a plurality of layers of high strength fibers interspersed among the plurality of cloth layers so as to spanwisely extend along the pressure and suction surfaces of the blade, thereby forming a preliminary composite assembly; additional foam filler shaped to mate with the preliminary composite assembly to form portions of the blade\s leading and trailing airfoil edges; and a second laminate wrap formed of a plurality of cloth layers disposed about the preliminary composite assembly and proximately located shaped foam filler.

이 특허에 인용된 특허 (12) 인용/피인용 타임라인 분석

Marshall Andrew C. (2147 Wilmington Dr. Walnut Creek CA 94596), Aeroelastically responsive composite propeller.
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Weingart Oscar (5219 Telefair Way Riverside CA 92506), Blade or spar.
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Spoltman Mark W. (Piqua OH) Bowerman Richard D. (Piqua OH) Edinger Richard L. (Piqua OH), Composite aircraft propeller blade.
상세보기
Prescott Roger (Johnson City TN), Composite disc.
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Bost Michel (Joinville-le-Pont FRX), Composite material blade with twin longeron and twin box structure having laminated honeycomb sandwich coverings and a m.
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Graff John M. (West Suffield CT) Nutter ; Jr. Harry A. (Longmeadow MA) Stoltze Leon (East Hartland CT), Fabrication of bonded structures.
상세보기
Gustafson Robert (Windsor CT) Nagle David P. (Windsor Locks CT), Insulated propeller blade.
상세보기
Kasarsky James L. (Rockford IL) Scanlon John F. (Roscoe IL) Church John (Rockford IL) Wigell Gary (Rockford IL), Means and method for securing a composite rotor blade.
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Grimes Richard V. (Piqua OH) Harlamert W. Benjamin (Piqua OH) Thompson David F. (Prospect Park PA), Method of fabricating an aircraft propeller assembly with composite blades.
상세보기
Nutter ; Jr. Harry A. (Longmeadow MA), Method of making fiber reinforced articles.
상세보기
Baskin Joseph M. (Bala Cynwyd PA), Rotor blade internal damper.
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Basso Robert J. (3635 Afton Rd. San Diego CA 92123), Wind turbine blade construction.
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이 특허를 인용한 특허 (28) 인용/피인용 타임라인 분석

Coupe, Dominique; Dambrine, Bruno Jacques Gerard; Mahieu, Jean-Noel, Aircraft propeller blade.
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Bianchi, Laurent; Isidore, Nicolas; Gaffiero, Jacques; Michel, Bernard, Blade and method of fabricating said blade.
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Jevons, Matthew P., Composite aerofoil blade with wear-resistant tip.
상세보기
Cahill, Kevin; Strauss, Eric; Burchett, Doug; Didandeh, Hooshang; Shogren, Charles Mark, Composite fan.
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Wybrow, Tim, Composite spars.
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Covino Charles P. ; Aversenti Edmund V. ; Pleasant Gaylon ; Solomon Allen, Fabrication of tooling by thermal spraying.
상세보기
Spoonire, Ross Ashely; Lin, Wendy Wen-Ling; Schilling, Jan Christopher; Shim, Dong Jin; Gemeinhardt, Gregory Carl; Jadhav, Prakash Kashiram, Hybrid turbine blade including multiple insert sections.
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Albrecht,Harry A.; Shteyman,Yevgeniy; Morrison,Jay A.; Thompson,Daniel G., Lamellate CMC structure with interlock to metallic support structure.
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Decker, David; Roby, Stephen, Low blade frequency titanium compressor wheel.
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Salt Frank Trevor,GB2, Method of manufacturing a blade.
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Lanni,Francesco; Eckhart,John A., Propeller.
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Carvalho,Paul Armand, Propeller blade retention system.
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Talasco, Eric J.; Carvalho, Paul A., Propeller blade retention system with tapered roller bearing cartridge assemblies.
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Nagle, David P.; Brion, Patrice; Prunet, Ludovic, Propeller blade with modified spar layup.
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Martin, Billy M.; Davis, Kevin A., Propeller with lightening strike protection.
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Jevons, Matthew P., Reinforced composite aerofoil blade.
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Herrmann Axel S. (Lehrte DEX) Krajenski Volker (Braunschweig DEX) Pabsch Arno E.R.K. (Braunschweig DEX), Rotor blade.
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Simkulak, Richard Joseph; Leahy, Kevin P.; Caputo, Frank; Ciesielski, Daniel, Rotor blade for a rotary-wing aircraft.
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Rochegude, Bernard; Hirsch, Jean-Francois, Rotorcraft blade provided with a radial segment and with at least one forwardly- and/or rearwardly-swept segment.
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Ball, Danny; Pfeiffer, Kevin, Single-piece propeller and method of making.
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Ball, Danny; Pfeiffer, Kevin, Single-piece propeller and method of making.
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Leibfried, Peter E.; Hamilla, Brian J., Turbine element manufacture.
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Carter ; Jr. Jay W., Variable pitch aircraft propeller.
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Upton, Daniel E.; Gruhn, Joel D., Wind turbine rotor blade components and machine for making same.
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Gruhn, Joel D.; Franklin, Ethan; Narasimhan, Kameshwaran, Wind turbine rotor blade components and methods of making same.
상세보기
Gruhn, Joel D.; Franklin, Ethan; Narasimhan, Kameshwaran, Wind turbine rotor blade components and methods of making same.
상세보기
Gruhn, Joel D.; Franklin, Ethan; Narasimhan, Kameshwaran, Wind turbine rotor blade components and methods of making same.
상세보기
Gruhn, Joel D.; Franklin, Ethan; Narasimhan, Kameshwaran, Wind turbine rotor blade components and methods of making same.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Composite blade with partial length spar 원문보기