JPH0242059B2 - - Google Patents

Info

Publication number
JPH0242059B2
JPH0242059B2 JP58074852A JP7485283A JPH0242059B2 JP H0242059 B2 JPH0242059 B2 JP H0242059B2 JP 58074852 A JP58074852 A JP 58074852A JP 7485283 A JP7485283 A JP 7485283A JP H0242059 B2 JPH0242059 B2 JP H0242059B2
Authority
JP
Japan
Prior art keywords
adhesive
sheet
mold
fiber
fibrous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP58074852A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58211418A (ja
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPS58211418A publication Critical patent/JPS58211418A/ja
Publication of JPH0242059B2 publication Critical patent/JPH0242059B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/28—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/20—Constructional features
    • B64C11/26—Fabricated blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/087—Propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08—Glass
    • B32B2315/085—Glass fiber cloth or fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1036—Bending of one piece blank and joining edges to form article
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49332—Propeller making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making
    • Y10T29/49337—Composite blade

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)
JP58074852A 1982-05-27 1983-04-27 繊維強化物品の製造法 Granted JPS58211418A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/382,828 US4470862A (en) 1982-05-27 1982-05-27 Manufacture of fiber reinforced articles
US382828 1982-05-27

Publications (2)

Publication Number Publication Date
JPS58211418A JPS58211418A (ja) 1983-12-08
JPH0242059B2 true JPH0242059B2 (en]) 1990-09-20

Family

ID=23510564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58074852A Granted JPS58211418A (ja) 1982-05-27 1983-04-27 繊維強化物品の製造法

Country Status (11)

Country Link
US (1) US4470862A (en])
JP (1) JPS58211418A (en])
BR (1) BR8302056A (en])
CA (1) CA1195223A (en])
DE (1) DE3314185C2 (en])
ES (1) ES521916A0 (en])
FR (1) FR2527515B1 (en])
GB (1) GB2120599B (en])
IT (1) IT1163260B (en])
NL (1) NL8301516A (en])
SE (1) SE455176B (en])

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1161534B (it) * 1983-10-26 1987-03-18 Agusta Aeronaut Costr Longherone per pala di elicottero e metodo per la sua realizzazione
FR2616409B1 (fr) * 1987-06-09 1989-09-15 Aerospatiale Pale en materiaux composites et son procede de fabrication
US5022824A (en) * 1988-10-07 1991-06-11 United Technologies Corporation Pinned airfoil propeller blade
US4988469A (en) * 1988-11-21 1991-01-29 United Technologies Corporation Method of fabricating fiber reinforced composite articles by resin transfer molding
US5042968A (en) * 1989-11-02 1991-08-27 United Technologies Corporation Propeller blade subassembly and method for making a propeller blade subassembly
US5314309A (en) * 1990-05-25 1994-05-24 Anthony Blakeley Turbine blade with metallic attachment and method of making the same
US5118257A (en) * 1990-05-25 1992-06-02 Sundstrand Corporation Boot attachment for composite turbine blade, turbine blade and method of making turbine blade
US5080851A (en) * 1990-09-06 1992-01-14 United Technologies Corporation Method for stabilizing complex composite preforms
US5252165A (en) * 1990-09-20 1993-10-12 United Technologies Corporation Method of making contoured fiber reinforced body
US5127802A (en) * 1990-12-24 1992-07-07 United Technologies Corporation Reinforced full-spar composite rotor blade
US5222297A (en) * 1991-10-18 1993-06-29 United Technologies Corporation Composite blade manufacture
US5392514A (en) * 1992-02-06 1995-02-28 United Technologies Corporation Method of manufacturing a composite blade with a reinforced leading edge
US5320494A (en) * 1992-12-22 1994-06-14 United Technologies Corporation Helicopter rotor blade having a replaceable anhedral tip
GB2279114A (en) * 1993-06-15 1994-12-21 Nuaire Ltd Fan impeller blade
US5681513A (en) * 1995-08-04 1997-10-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for fabricating composite structures using continuous press forming
US5720597A (en) * 1996-01-29 1998-02-24 General Electric Company Multi-component blade for a gas turbine
US6447705B1 (en) * 1996-06-28 2002-09-10 Texas Instruments Incorporated Tackifier application for resin transfer molding
US6350513B1 (en) 1997-10-08 2002-02-26 Mcdonnell Douglas Helicopter Company Low density structures having radar absorbing characteristics
US6428380B1 (en) * 1998-02-02 2002-08-06 Michael B. Murphy Method and apparatus for applying a transparent skin to a model airplane
US6296037B1 (en) * 1999-08-10 2001-10-02 Newell Window Furnishings, Inc. Foam core vane for door and window covering
DE19959598A1 (de) * 1999-12-10 2001-06-13 Rolls Royce Deutschland Verfahren zum Herstellen einer Schaufel einer Strömungsmaschine
US6413051B1 (en) 2000-10-30 2002-07-02 General Electric Company Article including a composite laminated end portion with a discrete end barrier and method for making and repairing
US7138028B2 (en) * 2001-07-26 2006-11-21 The Boeing Company Vacuum assisted resin transfer method for co-bonding composite laminate structures
US20080289743A1 (en) * 2003-05-02 2008-11-27 Tsotsis Thomas K Highly porous interlayers to toughen liquid-molded fabric-based composites
US8246882B2 (en) * 2003-05-02 2012-08-21 The Boeing Company Methods and preforms for forming composite members with interlayers formed of nonwoven, continuous materials
US20050257887A1 (en) * 2004-05-24 2005-11-24 Tsotsis Thomas K Method and apparatus for melt-bonded materials for tackification of dry fabric preforms
JP4734527B2 (ja) * 2004-03-17 2011-07-27 川崎重工業株式会社 トラフユニットおよびそれを用いた空気浮上式ベルトコンベア装置
US20080072569A1 (en) * 2006-09-27 2008-03-27 Thomas Ory Moniz Guide vane and method of fabricating the same
DE102006061915A1 (de) * 2006-12-21 2008-07-03 Rolls-Royce Deutschland Ltd & Co Kg Hybrid-Fanschaufel und Verfahren zu deren Herstellung
ES2319152B1 (es) * 2007-07-17 2010-01-11 Fco.Javier Garcia Castro Procedimiento para la fabricacion de palas eolicas.
FR2922188B1 (fr) * 2007-10-11 2010-04-23 Airbus France Cale en materiau composite renforcee et procede de renforcement d'une cale en materiau composite
US20100122459A1 (en) * 2008-11-17 2010-05-20 General Electric Company Method of making wind turbine blade
US8182213B2 (en) * 2009-04-22 2012-05-22 Pratt & Whitney Canada Corp. Vane assembly with removable vanes
CA2784256A1 (en) * 2009-12-18 2011-06-23 Magna International Inc. Sheet molding compound with cores
CA2786561C (en) 2010-01-14 2018-03-20 Neptco, Inc. Wind turbine rotor blade components and methods of making same
US10137542B2 (en) 2010-01-14 2018-11-27 Senvion Gmbh Wind turbine rotor blade components and machine for making same
FR2964411B1 (fr) * 2010-09-06 2012-08-24 Messier Dowty Sa Aube de turboreacteur, notamment une aube de redresseur, et turboreacteur recevant de telles aubes
FR2964427B1 (fr) * 2010-09-06 2014-05-09 Messier Dowty Sa Carter de turboreacteur et turboreacteur recevant de tels carters
EP2599714B1 (en) * 2011-11-30 2014-10-08 Hamilton Sundstrand Corporation Propeller blade having compliant adhesive at spar interface
GB201120994D0 (en) * 2011-12-07 2012-01-18 Airbus Uk Ltd Integral stiffener
US20130280079A1 (en) * 2012-04-18 2013-10-24 Hamilton Sundstrand Corporation Propeller blade with metallic foam spar core
US9168999B2 (en) * 2012-04-18 2015-10-27 Hamilton Sundstrand Corporation Propeller blade with internal stiffener
EP2660144A1 (en) * 2012-04-30 2013-11-06 Hamilton Sundstrand Corporation Propeller blade with modified spar stiffness.
US9139287B2 (en) * 2012-06-26 2015-09-22 Hamilton Sundstrand Corporation Propeller blade with carbon foam spar core
WO2014120123A2 (en) 2013-01-29 2014-08-07 United Technologies Corporation Thermoplastic nosecone for a turbine engine
US20150266572A1 (en) * 2014-03-21 2015-09-24 Hamilton Sundstrand Corporation Propeller blade having compliant spar core
US20160032939A1 (en) * 2014-07-31 2016-02-04 General Electric Company Airfoil structures
DE102017105935B4 (de) 2017-03-20 2021-09-02 Preh Gmbh Verfahren zum vollflächigen Verbinden von antiparallel verlaufenden Kontaktflächen eines ersten und zweiten Fügepartners mittels eines Formlings
US10633084B2 (en) * 2017-08-25 2020-04-28 Bell Helicopter Textron Inc. Geodesic composite structures
GB2588381A (en) * 2019-10-14 2021-04-28 Short Brothers Plc Patch material
US11982205B1 (en) * 2022-12-28 2024-05-14 General Electric Company Airfoil having a spar assembly for a turbine engine
US20250243769A1 (en) * 2024-01-31 2025-07-31 Rtx Corporation Gas turbine engine component formed by cmcs and having a compressed insert with tapered ends

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630868A (en) * 1949-10-29 1953-03-10 Gen Electric Plastic rotor blade
US2890147A (en) * 1954-12-23 1959-06-09 Owens Corning Fiberglass Corp Method of making metal-reinforced boards of mineral fibers
FR1216393A (fr) * 1957-11-21 1960-04-25 Bristol Aircraft Ltd Perfectionnements apportés à la fabrication de panneaux en résine renforcée par des fibres
US3140846A (en) * 1958-04-14 1964-07-14 Eonair Inc Aircraft covering composition and method of making same
US2929755A (en) * 1958-07-24 1960-03-22 Orenda Engines Ltd Plastic blades for gas turbine engines
US3150024A (en) * 1960-09-20 1964-09-22 Magee Carpet Co Method and apparatus for laminating a layer of plastic and scrim on the backing of carpet
US3321019A (en) * 1965-10-22 1967-05-23 United Aircraft Corp Fiberglass blade
US3525662A (en) * 1966-08-15 1970-08-25 Moore & Munger Composite contoured carpets for automobiles and the like and method for making the same
FR1496905A (fr) * 1966-10-17 1967-10-06 United Aircraft Corp Pale en matière plastique renforcée par des fibres de verre
GB1262704A (en) * 1968-08-10 1972-02-02 Messerschmitt Boelkow Blohm Helicopter rotor blade
US3682738A (en) * 1969-09-03 1972-08-08 Johnson & Johnson Methods and apparatus for depositing powdered materials in patterned areas
DD100058A1 (de) * 1972-10-12 1980-10-01 Schaufeln für Axialventilatoren und Verfahren zur Herstellung dieser Schaufeln
US3873654A (en) * 1973-03-05 1975-03-25 Robert G Smith Process of forming a rigid foam airfoil section
FR2234130B1 (en]) * 1973-05-14 1976-04-30 Kamov Nikolai
US4051289A (en) * 1976-04-12 1977-09-27 General Electric Company Composite airfoil construction
JPS53106243A (en) * 1977-02-25 1978-09-16 Nobuhiro Michimae Method of producing belt core cloth having latent curve
GB1587314A (en) * 1978-05-22 1981-04-01 Rolls Royce Method of forming an article from composite material
GB2032832B (en) * 1978-09-16 1982-07-28 Dowty Rotol Ltd Foam-containing structures
DE2855179C2 (de) * 1978-12-20 1982-06-09 Dr. Carl Hahn GmbH, 4000 Düsseldorf Tampon für die Frauenhygiene
BR8105757A (pt) * 1980-10-02 1982-05-25 United Technologies Corp Processo pra a producao de um aerofolio

Also Published As

Publication number Publication date
GB2120599B (en) 1985-10-09
NL8301516A (nl) 1983-12-16
US4470862A (en) 1984-09-11
JPS58211418A (ja) 1983-12-08
ES8403366A1 (es) 1984-04-01
FR2527515B1 (fr) 1987-03-20
ES521916A0 (es) 1984-04-01
IT8320848A1 (it) 1984-10-29
SE8302233L (sv) 1983-11-28
BR8302056A (pt) 1984-04-17
SE8302233D0 (sv) 1983-04-20
CA1195223A (en) 1985-10-15
DE3314185A1 (de) 1983-12-01
FR2527515A1 (fr) 1983-12-02
IT8320848A0 (it) 1983-04-29
DE3314185C2 (de) 1994-04-28
IT1163260B (it) 1987-04-08
GB2120599A (en) 1983-12-07
SE455176B (sv) 1988-06-27

Similar Documents

Publication Publication Date Title
JPH0242059B2 (en])
US5482584A (en) Method for manufacturing rotor blades
US5222297A (en) Composite blade manufacture
US5392514A (en) Method of manufacturing a composite blade with a reinforced leading edge
EP0771265B1 (en) Method and apparatus for forming airfoil structures
US5544908A (en) Thermoplastic composite ski and method of manufacture
KR101900967B1 (ko) 부드러운 런아웃부들을 구비한 일체로 형성된 보강재들을 가진 복합 구조물들 및 이를 만드는 방법
US4917747A (en) Method of making crushed core molded panels
JP2011516316A (ja) 両側にカバー層を備えたコア複合体を製造する方法
EP1029770B1 (en) Process for manufacturing motor car steering wheels with an external shell made of composite materials
US7097731B2 (en) Method of manufacturing a hollow section, grid stiffened panel
US6056838A (en) Method for manufacturing a variable-pitch composite blade for a helicopter rotor
US5122210A (en) Process for producing a bicycle frame made of fiber-reinforced plastics
US4463044A (en) Composite panel of varied thickness
KR20160138566A (ko) 샌드위치 부품을 제조하기 위한 방법 및 장치와, 샌드위치 부품
JPH04232713A (ja) 中空ファンブレード及び中空ファンブレードを製造する方法
CA2694049A1 (en) Method for the manufacture of wind vanes
JPH0242658B2 (en])
US5252165A (en) Method of making contoured fiber reinforced body
US3658612A (en) Method of fabricating cellular foam core structure assembly
US6035531A (en) Method for manufacturing a variable-pitch composite blade for a helicopter rotor
US4459171A (en) Mandrel for forming a composite panel of varied thickness
US20120321479A1 (en) Method for production of a rotor blade for a wind turbine generator and a rotor blade
JP2685549B2 (ja) 繊維強化プラスチック製トラス構造体の製造法
JPH01310152A (ja) フレキシブルベアリングの製造方法