BR8902681A - Quadro para casco de trabalho,notadamente para fuselagem de aeronave e processo de fabricacao do mesmo - Google Patents

Quadro para casco de trabalho,notadamente para fuselagem de aeronave e processo de fabricacao do mesmo

Info

Publication number
BR8902681A
BR8902681A BR898902681A BR8902681A BR8902681A BR 8902681 A BR8902681 A BR 8902681A BR 898902681 A BR898902681 A BR 898902681A BR 8902681 A BR8902681 A BR 8902681A BR 8902681 A BR8902681 A BR 8902681A
Authority
BR
Brazil
Prior art keywords
fuseling
notes
aircraft
frame
manufacturing process
Prior art date
Application number
BR898902681A
Other languages
English (en)
Inventor
Henri Barquet
Pierre-Paul Negroni
Bernard Plissoneau
Original Assignee
Aerospatiale
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 by Aerospatiale filed Critical Aerospatiale
Publication of BR8902681A publication Critical patent/BR8902681A/pt

Links

Classifications

    • 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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0003—Producing profiled members, e.g. beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/06—Frames; Stringers; Longerons ; Fuselage sections
    • B64C1/061—Frames
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/10—Cords, strands or rovings, e.g. oriented cords, strands or rovings
    • B29K2105/101—Oriented
    • 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
    • B29L2031/001—Profiled members, e.g. beams, sections
    • B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
    • B29L2031/005—Profiled members, e.g. beams, sections having a profiled transverse cross-section for making window frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C2001/0054—Fuselage structures substantially made from particular materials
    • B64C2001/0072—Fuselage structures substantially made from particular materials from composite materials
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
BR898902681A 1988-06-08 1989-06-07 Quadro para casco de trabalho,notadamente para fuselagem de aeronave e processo de fabricacao do mesmo BR8902681A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8807638A FR2632604B1 (fr) 1988-06-08 1988-06-08 Cadre en materiau composite notamment pour fuselage d'aeronef, et son procede de fabrication

Publications (1)

Publication Number Publication Date
BR8902681A true BR8902681A (pt) 1990-01-23

Family

ID=9367080

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898902681A BR8902681A (pt) 1988-06-08 1989-06-07 Quadro para casco de trabalho,notadamente para fuselagem de aeronave e processo de fabricacao do mesmo

Country Status (8)

Country Link
US (1) US5024399A (pt)
EP (1) EP0346210B1 (pt)
JP (1) JP2677676B2 (pt)
BR (1) BR8902681A (pt)
CA (1) CA1330072C (pt)
DE (1) DE68904601T2 (pt)
ES (1) ES2039084T3 (pt)
FR (1) FR2632604B1 (pt)

Families Citing this family (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06255587A (ja) * 1993-03-09 1994-09-13 Honda Motor Co Ltd 航空機
US5980206A (en) * 1996-05-31 1999-11-09 Sikorsky Aircraft Corporation Monolithic structure having improved flaw tolerance
DE19639339B4 (de) * 1996-09-25 2004-06-24 Dwa Deutsche Waggonbau Gmbh Schalenstruktur aus faserverstärktem Kunststoff für Fahrzeuge oder Behälter, insbesondere für Wagenkästen von Schienenfahrzeugen
DE19922295C1 (de) * 1999-05-14 2000-07-27 Eurocopter Deutschland Unterbodenstruktur einer Rumpfzelle eines Luftfahrzeuges
US6213426B1 (en) 1999-07-09 2001-04-10 The Boeing Company Monolithic structure with redundant load paths
DE10111896B8 (de) * 2001-03-13 2012-06-06 Eads Space Transportation Gmbh Metallischer Ring für die Verbindung zweier rotationssymmetrischer Strukturteile
US8336596B2 (en) * 2002-11-22 2012-12-25 The Boeing Company Composite lamination using array of parallel material dispensing heads
US7137182B2 (en) * 2002-11-22 2006-11-21 The Boeing Company Parallel configuration composite material fabricator
JP3888630B2 (ja) * 2002-12-04 2007-03-07 川崎重工業株式会社 エネルギー吸収部材及びそれを用いるヘリコプタの耐衝撃構造
US7080441B2 (en) * 2003-07-28 2006-07-25 The Boeing Company Composite fuselage machine and method of automated composite lay up
US7236625B2 (en) * 2003-07-28 2007-06-26 The Boeing Company Systems and method for identifying foreign objects and debris (FOD) and defects during fabrication of a composite structure
US8934702B2 (en) * 2003-12-02 2015-01-13 The Boeing Company System and method for determining cumulative tow gap width
US7289656B2 (en) * 2003-12-02 2007-10-30 The Boeing Company Systems and methods for determining inconsistency characteristics of a composite structure
FR2864020B1 (fr) * 2003-12-19 2006-02-10 Airbus France Nez d'avion avec bouclier
US7039485B2 (en) 2004-03-12 2006-05-02 The Boeing Company Systems and methods enabling automated return to and/or repair of defects with a material placement machine
US7159822B2 (en) * 2004-04-06 2007-01-09 The Boeing Company Structural panels for use in aircraft fuselages and other structures
US7134629B2 (en) * 2004-04-06 2006-11-14 The Boeing Company Structural panels for use in aircraft fuselages and other structures
US7527222B2 (en) 2004-04-06 2009-05-05 The Boeing Company Composite barrel sections for aircraft fuselages and other structures, and methods and systems for manufacturing such barrel sections
US7193696B2 (en) * 2004-04-12 2007-03-20 United Technologies Corporation Systems and methods for using light to indicate defect locations on a composite structure
DE102004025378B4 (de) * 2004-05-24 2011-01-13 Airbus Operations Gmbh Fensterrahmen für Flugzeuge
DE102004025377B4 (de) * 2004-05-24 2013-02-14 Airbus Operations Gmbh Fensterrahmen für Flugzeuge
US7325771B2 (en) 2004-09-23 2008-02-05 The Boeing Company Splice joints for composite aircraft fuselages and other structures
US7424902B2 (en) * 2004-11-24 2008-09-16 The Boeing Company In-process vision detection of flaw and FOD characteristics
US7503368B2 (en) 2004-11-24 2009-03-17 The Boeing Company Composite sections for aircraft fuselages and other structures, and methods and systems for manufacturing such sections
US20060108048A1 (en) * 2004-11-24 2006-05-25 The Boeing Company In-process vision detection of flaws and fod by back field illumination
US7166251B2 (en) * 2004-12-01 2007-01-23 The Boeing Company Segmented flexible barrel lay-up mandrel
US20060118244A1 (en) * 2004-12-02 2006-06-08 The Boeing Company Device for laying tape materials for aerospace applications
US7624488B2 (en) * 2004-12-07 2009-12-01 The Boeing Company One-piece barrel assembly cart
US7889907B2 (en) * 2005-01-12 2011-02-15 The Boeing Company Apparatus and methods for inspecting tape lamination
US7278198B2 (en) * 2005-02-01 2007-10-09 The Boeing Company Mandrel segment loader
US7837147B2 (en) 2005-03-18 2010-11-23 The Boeing Company Systems and methods for reducing noise in aircraft fuselages and other structures
FR2884802B1 (fr) * 2005-04-22 2008-11-14 Eurocopter France Structure porteuse et aeronef a voilure tournante
JP4520367B2 (ja) * 2005-06-07 2010-08-04 川崎重工業株式会社 航空機の耐衝撃構造
US7372556B2 (en) * 2005-10-31 2008-05-13 The Boeing Company Apparatus and methods for inspecting a composite structure for inconsistencies
US7435947B2 (en) * 2005-10-31 2008-10-14 The Boeing Company Apparatus and methods for integrating encoding functions in material placement machines
DE102006002248B4 (de) * 2006-01-17 2008-01-03 Airbus Deutschland Gmbh Strukturgebende Konstruktion für einen Flugzeugrumpf
FR2896768B1 (fr) * 2006-01-27 2009-10-09 Eurocopter France Structure composite anti-crash a flambage controle pour aeronef.
FR2896770B1 (fr) 2006-01-27 2008-04-11 Eurocopter France Structure composite anti-crash a maintien lateral pour aeronef.
DE102006026169B4 (de) * 2006-06-06 2012-06-21 Airbus Operations Gmbh Flugzeugrumpfstruktur und Verfahren zu deren Herstellung
DE102006026168A1 (de) 2006-06-06 2008-01-31 Airbus Deutschland Gmbh Flugzeugrumpfstruktur und Verfahren zu deren Herstellung
DE102006026170B4 (de) * 2006-06-06 2012-06-21 Airbus Operations Gmbh Flugzeugrumpfstruktur und Verfahren zu deren Herstellung
FR2903961B1 (fr) 2006-07-21 2009-09-25 Eurocopter France Element structurel de cellule de giravion,son procede de fabrication,cellule de giravion et giravion comportant de tels elements structurels
FR2904602B1 (fr) * 2006-08-01 2009-04-10 Airbus France Sas Encadrement de porte pour aeronef
WO2008065214A1 (es) * 2006-11-29 2008-06-05 Airbus España, S.L. Mamparo de presión de material compuesto para aeronave
US9511571B2 (en) * 2007-01-23 2016-12-06 The Boeing Company Composite laminate having a damping interlayer and method of making the same
WO2008092970A1 (es) * 2007-01-29 2008-08-07 Airbus España, S.L. Cuaderna de carga de aeronave en material compuesto
RU2448865C2 (ru) * 2007-01-29 2012-04-27 Эйрбас Оперейшнз, С.Л. Силовой шпангоут летательного аппарата, изготовленный из композитного материала
US8388795B2 (en) * 2007-05-17 2013-03-05 The Boeing Company Nanotube-enhanced interlayers for composite structures
DE102007033120A1 (de) * 2007-07-13 2009-01-15 Evonik Röhm Gmbh Verbesserte Stumpfstoßverbindungen für Kernwerkstoffe
US8042767B2 (en) 2007-09-04 2011-10-25 The Boeing Company Composite fabric with rigid member structure
DE102008059653B4 (de) * 2008-11-28 2015-07-09 Gkn Aerospace Services Ltd. Flächiges Bauteil eines Fluggerätes und Verfahren zu dessen Herstellung
ES2385993B1 (es) * 2008-12-18 2013-06-17 Airbus Operations, S.L. Fuselaje trasero de una aeronave con una zona de introducción de carga de un estabilizador horizontal de cola y de un estabilizador vertical de cola que comprende elementos receptores de las cargas de dichos estabilizadores unidos a elementos estructurales del fuselaje.
US8425710B2 (en) * 2009-03-13 2013-04-23 The Boeing Company Automated placement of vibration damping materials
US8182025B2 (en) * 2009-04-29 2012-05-22 Inalfa Roof Systems Group B.V. Method of producing a panel assembly
JP5297288B2 (ja) 2009-07-17 2013-09-25 三菱重工業株式会社 衝撃吸収構造体
DE102010062871A1 (de) * 2009-12-29 2011-06-30 Airbus Operations GmbH, 21129 Infusionsverfahren und Aufbau eines Infusionsverfahrens
EP2353907A1 (en) 2010-01-27 2011-08-10 Inalfa Roof Systems Group B.V. Roof panel and method of manufacturing said panel
US8317135B2 (en) * 2010-04-19 2012-11-27 Sabreliner Corporation Flexible mounting assembly for an air frame structure
US8784596B2 (en) 2010-11-19 2014-07-22 The Boeing Company Method for making and joining composite sandwich shell edge joint
US8875931B2 (en) 2010-11-19 2014-11-04 The Boeing Company Composite sandwich shell edge joint
WO2012078221A1 (en) 2010-12-07 2012-06-14 Travel Tags, Inc. Lens sheet having lens array formed in preselected areas and articles formed therefrom
US8771443B2 (en) * 2012-01-05 2014-07-08 The Boeing Company Method of fabricating a composite laminate enabling structural monitoring using electromagnetic radiation
US9359078B2 (en) * 2012-03-28 2016-06-07 B/E Aerospace, Inc. Aircraft galley monument structure
US9248587B2 (en) * 2012-07-05 2016-02-02 General Electric Company Apparatus for manufacturing a flanged composite component and methods of manufacturing the same
US10099765B2 (en) * 2012-08-08 2018-10-16 The Boeing Company Monolithic composite structures for vehicles
RU2519301C1 (ru) * 2013-02-18 2014-06-10 Иван Сергеевич Рыбкин Шпангоут переменной жесткости
US10189578B2 (en) * 2013-06-12 2019-01-29 The Boeing Company Self-balancing pressure bulkhead
FR3009273B1 (fr) * 2013-07-30 2017-07-28 Eurocopter France Cadre en materiaux composites stratifies pour fuselage d'aeronef, comportant des zones de renfort courbes a rayon de courbure evolutif
CN103466072B (zh) * 2013-09-27 2015-06-10 山东太古飞机工程有限公司 分舱隔板
PL2905228T3 (pl) * 2014-02-06 2018-05-30 Airbus Helicopters Deutschland GmbH Płatowiec kadłubowy i zbiornik
US10093406B2 (en) * 2014-12-10 2018-10-09 The Boeing Company Aircraft frame for tailstrike angle enhancement
US20180327071A1 (en) * 2017-05-10 2018-11-15 The Boeing Company Systems and methods for aircraft integrated composite frames
GB2571911A (en) * 2017-12-21 2019-09-18 Airbus Operations Gmbh A Stiffener for an Aircraft Assembly
ES2964631T3 (es) * 2019-07-12 2024-04-08 Muelles Y Ballestas Hispano Alemanas Projects S L Elemento estructural de refuerzo interno para fuselaje y procedimiento de fabricación de dicho elemento estructural

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1803494A (en) * 1928-12-20 1931-05-05 Emboutissage Et De Const Mecan Hollow-frame assembly
US1880481A (en) * 1929-09-13 1932-10-04 Budd Edward G Mfg Co Aircraft construction and method of making same
US1881296A (en) * 1930-01-27 1932-10-04 Potez Henry Charles Alexandre Metal built aircraft
US2965336A (en) * 1956-03-30 1960-12-20 Lissarrague Pierre Jules Device for forming an opening in a metallic panel
US3995081A (en) * 1974-10-07 1976-11-30 General Dynamics Corporation Composite structural beams and method
US3995080A (en) * 1974-10-07 1976-11-30 General Dynamics Corporation Filament reinforced structural shapes
US3976269A (en) * 1974-12-19 1976-08-24 The Boeing Company Intrinsically tuned structural panel
DE2622163C3 (de) * 1976-05-19 1983-05-26 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Profilträger aus faserverstärktem Werkstoff
GB2134059B (en) * 1983-01-25 1986-06-25 Westland Plc Composite helicopter fuselage
DE3401189A1 (de) * 1983-01-25 1984-07-26 Westland PLC, Yeovil, Somerset Verbund-hubschrauberrumpf
GB2196922A (en) * 1986-09-26 1988-05-11 Airship Ind Airship gondola construction

Also Published As

Publication number Publication date
JPH0239920A (ja) 1990-02-08
EP0346210B1 (fr) 1993-01-27
FR2632604A1 (fr) 1989-12-15
FR2632604B1 (fr) 1991-07-12
DE68904601D1 (de) 1993-03-11
DE68904601T2 (de) 1993-07-15
US5024399A (en) 1991-06-18
EP0346210A1 (fr) 1989-12-13
ES2039084T3 (es) 1993-08-16
CA1330072C (en) 1994-06-07
JP2677676B2 (ja) 1997-11-17

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Legal Events

Date Code Title Description
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 07/06/2004