WO1987001431A1 - Element de structure - Google Patents

Element de structure Download PDF

Info

Publication number
WO1987001431A1
WO1987001431A1 PCT/AU1985/000218 AU8500218W WO8701431A1 WO 1987001431 A1 WO1987001431 A1 WO 1987001431A1 AU 8500218 W AU8500218 W AU 8500218W WO 8701431 A1 WO8701431 A1 WO 8701431A1
Authority
WO
WIPO (PCT)
Prior art keywords
structural member
channel
members
elongated
elongated members
Prior art date
Application number
PCT/AU1985/000218
Other languages
English (en)
Inventor
Arthur Derrick Bray Graham
Neil Deryck Bray Graham
Original Assignee
Offshore Marine Pty. Ltd.
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
Priority claimed from AU39548/85A external-priority patent/AU586418B2/en
Application filed by Offshore Marine Pty. Ltd. filed Critical Offshore Marine Pty. Ltd.
Priority to PCT/AU1985/000218 priority Critical patent/WO1987001431A1/fr
Publication of WO1987001431A1 publication Critical patent/WO1987001431A1/fr
Priority to KR870700391A priority patent/KR880700208A/ko

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C3/00—Wings
    • B64C3/18—Spars; Ribs; Stringers
    • B64C3/185—Spars

Definitions

  • THIS INVENTION relates to a structural member construction and to a method of constructing a structural member.
  • the invention resides in a structural member
  • a rigid core is interposed between the two elongated members.
  • the core may be of cellular material such as homogeneous cross-linked PVC foam, urethane foam or honeycomb.
  • the channel members are disposed in back-to-back relationship.
  • the elongated members are preferably formed of reinforced plastics material.
  • the -invention resides in a method of con ⁇ structing a structural member comprising, the steps of forming an elongated tubular member, dividing the tubular member longitudinally to form a pair of elongated members of channel or angle cross-section and bonding the elonga ⁇ ted members together in side-by-side relationship.
  • the invention resides in a method of constructing a structural member comprising the steps of forming an elongated tubular member dividing the tubular member longitudinally to form a pair of elongated members of channel or angle cross-section, and bonding the elonga ⁇ ted members onto opposed faces of a rigid core.
  • the tubular member is formed by winding onto a mandrel fibre rovings to which resin is applied.
  • the resin may be applied to the fibre rovings prior to. during and/or after the winding process.
  • the mandrel may be either rotating or stationary.
  • Fig. 1 is a cross-sectional view of a structural member according to the first embodiment
  • Fig. 2 is a cross-sectional view of a structural member according to the second embodiment
  • Fig. 3 is a cross-sectional view of a structural member according to the third embodiment.
  • Fig. 4 is a cross-sectional view of a structural member according to the fourth embodiment.
  • the first embodiment which is shown in Fig. 1 of the drawings, is directed to a structural member in the form of an I-beam 11 of composite construction.
  • The' I-beam is formed from a pair of elongated members 13 of channel cross-section disposed in back-to-back relationship with a core 14 interposed therebetween, as shown in the drawing.
  • the web 13a of each elongated member is bonded to the adjacent face of the core 14.
  • the core is preferably of cellular material such as homogeneous cross-linked PVC foam, urethane foam, or a honeycomb of aramid paper.
  • the two elongated members 13 are preferably formed from a tubular member of rectangular cross-section which has been divided longitudinally.
  • the tubular member itself is preferably of reinforced plastics material and may be formed by means of a winding process in which fibre rovings to which resin is applied are wound about a man ⁇ drel having a rectangular mandrel surface.
  • the winding process may either by of the form which uses a rotating mandrel or be of the form which uses a stationary mandrel. >
  • the resin may be applied to the rovings prior to, during
  • the fibres may be carbon, glass, aramid or any other suitable high strength fibre.
  • the second embodiment which is shown in Fig. 2 of the drawings, is directed to an I-beam 15.
  • the I-beam 15 comprises a pair of elongated members 17 of channel cross-section bonded together in back-to-back relation ⁇ ship.
  • the elongated members of this embodiment are preferably formed from a tubular mem ⁇ ber of rectangular section which has been divided longi ⁇ tudinally.
  • the tubu ⁇ lar member is preferably formed by means of a winding process.
  • the third embodiment which is shown in Fig. 3 of the drawings is somewhat similar to the second embodiment with the exception that the structural member 21 is not an I-beam.
  • the structural member comprises first and second elongated members 23 and 25 respectively bonded together as shown in the drawing.
  • the first member 23 is formed from part of a tubular member of circular cross-section which has been divided longitudinally.
  • the second member 23 is formed from part of a tubular member of box-section which has been divided longitudinally.
  • the fourth embodiment which is shown in Fig . 4 of the drawings , is directed to a structural member 27 which is T-shaped in cross-section.
  • the structural member com- prises a pair of elongated members 29 of angle cross-sec ⁇ tion disposed in side-by-side relationship with a rigid core 31 interposed therebetween, as shown in the drawing.
  • One face 29a of each elongated member is bonded to the adjacent face of the core 31.
  • the core 31 in this embodiment is preferably of cellular material.
  • the elongated members 29 are preferably formed from a tubular member which has been divided longitudi ⁇ nally along a diagonal thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

Un élément de structure (11), qui peut être utilisé comme longeron dans la construction de l'aile d'un aéronef, comprend deux élément allongés (13) de section transversale en forme de canal ou d'équerre liés ensemble côte à côte. L'élément de structure (11) est réalisé de préférence en matériau plastique renforcé. Les éléments en forme de canal (13) sont disposés de préférence dos à dos et comprennent un noyau rigide (14) réalisé en matériau cellulaire placé entre lesdits éléments. Les deux éléments (13) peuvent être d'abord formés comme un seul élément tubulaire de stratifils enroulés recouverts de résine et ensuite divisés longitudinalement avant d'être liés afin de former la section transversale désirée.
PCT/AU1985/000218 1984-02-28 1985-09-04 Element de structure WO1987001431A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/AU1985/000218 WO1987001431A1 (fr) 1984-02-28 1985-09-04 Element de structure
KR870700391A KR880700208A (ko) 1985-09-04 1987-05-04 구조 부재

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPG381884 1984-02-28
AU39548/85A AU586418B2 (en) 1984-02-28 1985-02-28 Airfoil construction
PCT/AU1985/000218 WO1987001431A1 (fr) 1984-02-28 1985-09-04 Element de structure

Publications (1)

Publication Number Publication Date
WO1987001431A1 true WO1987001431A1 (fr) 1987-03-12

Family

ID=27153950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1985/000218 WO1987001431A1 (fr) 1984-02-28 1985-09-04 Element de structure

Country Status (1)

Country Link
WO (1) WO1987001431A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000020702A1 (fr) * 1998-09-22 2000-04-13 Norwegian Marine As Element de construction et fabrication de ce dernier
EP1268272A2 (fr) * 2000-04-05 2003-01-02 Bell Helicopter Textron Inc. Configuration de longeron en k pour structure d'aile coll e
GB2400122A (en) * 2000-03-22 2004-10-06 Internat Concept Technologies Beam with expanded polymer core bonded to two facings
EP4085004A4 (fr) * 2019-12-30 2024-01-10 Hapsmobile Inc. Noyau en nid d'abeilles pour longeron d'un véhicule aérien sans pilote

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823524A (en) * 1973-01-12 1974-07-16 Alusuisse Thermal break type architectural extrusions
GB1459447A (en) * 1973-02-14 1976-12-22 British Aircraft Corp Ltd Structural elements
US4002000A (en) * 1975-06-30 1977-01-11 Palmer-Shile Company Beam construction and method of manufacture
US4435242A (en) * 1981-11-26 1984-03-06 Bristol Composite Materials Engineering Limited Elongate structure
FR2552800A1 (fr) * 1983-09-30 1985-04-05 Cegedur Profile a coupure thermique arme
AU3954885A (en) * 1984-02-28 1985-09-05 Offshore Marine Pty. Ltd. Airfoil construction
AU3954985A (en) * 1984-02-28 1985-09-05 Offshore Marine Pty. Ltd. Structural member

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823524A (en) * 1973-01-12 1974-07-16 Alusuisse Thermal break type architectural extrusions
GB1459447A (en) * 1973-02-14 1976-12-22 British Aircraft Corp Ltd Structural elements
US4002000A (en) * 1975-06-30 1977-01-11 Palmer-Shile Company Beam construction and method of manufacture
US4435242A (en) * 1981-11-26 1984-03-06 Bristol Composite Materials Engineering Limited Elongate structure
FR2552800A1 (fr) * 1983-09-30 1985-04-05 Cegedur Profile a coupure thermique arme
AU3954885A (en) * 1984-02-28 1985-09-05 Offshore Marine Pty. Ltd. Airfoil construction
AU3954985A (en) * 1984-02-28 1985-09-05 Offshore Marine Pty. Ltd. Structural member

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000020702A1 (fr) * 1998-09-22 2000-04-13 Norwegian Marine As Element de construction et fabrication de ce dernier
GB2400122A (en) * 2000-03-22 2004-10-06 Internat Concept Technologies Beam with expanded polymer core bonded to two facings
GB2400122B (en) * 2000-03-22 2004-11-17 Internat Concept Technologies Composite building components
EP1268272A2 (fr) * 2000-04-05 2003-01-02 Bell Helicopter Textron Inc. Configuration de longeron en k pour structure d'aile coll e
EP1268272A4 (fr) * 2000-04-05 2006-05-31 Bell Helicopter Textron Inc Configuration de longeron en k pour structure d'aile coll e
EP4085004A4 (fr) * 2019-12-30 2024-01-10 Hapsmobile Inc. Noyau en nid d'abeilles pour longeron d'un véhicule aérien sans pilote

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