EP0233129A1 - Metall-Kunststoff-Verbundsegellatte - Google Patents

Metall-Kunststoff-Verbundsegellatte Download PDF

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Publication number
EP0233129A1
EP0233129A1 EP87420014A EP87420014A EP0233129A1 EP 0233129 A1 EP0233129 A1 EP 0233129A1 EP 87420014 A EP87420014 A EP 87420014A EP 87420014 A EP87420014 A EP 87420014A EP 0233129 A1 EP0233129 A1 EP 0233129A1
Authority
EP
European Patent Office
Prior art keywords
plastic
latte
batten
slat
latte according
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.)
Withdrawn
Application number
EP87420014A
Other languages
English (en)
French (fr)
Inventor
Jacques Baril
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cegedur Societe de Transformation de lAluminium Pechiney SA
Original Assignee
Cegedur Societe de Transformation de lAluminium Pechiney SA
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 Cegedur Societe de Transformation de lAluminium Pechiney SA filed Critical Cegedur Societe de Transformation de lAluminium Pechiney SA
Publication of EP0233129A1 publication Critical patent/EP0233129A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
    • B63H8/40—Arrangements for improving or maintaining the aerodynamic profile of sails, e.g. cambers, battens or foil profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/06—Types of sail; Constructional features of sails; Arrangements thereof on vessels
    • B63H9/065—Battens

Definitions

  • the invention relates to metallo-plastic composite slats for sails making it possible to produce a predetermined profile of these during use.
  • the slats used hitherto, in particular on the windsurfing boards, are generally substantially rectilinear during use. However, to increase the blading force, it is advantageous for the sail to have a curved profile, in the shape of an airplane wing.
  • the Applicant has found that the slats must be made of two metal skins, of constant thickness and of a plastic core whose thickness initially zero at one end increases, then decreases, to become zero at the other end.
  • the proportionality factor depends on the Young's moduli of the materials used and on the force applied to each end of the batten to impose the curved profile considered.
  • the coefficient of proportionality ( k) is between 8.10-5 and 21.10 -5 mm 2
  • the batten To avoid excessive bending stresses in the metal part, and therefore to obtain good resistance to fatigue, the batten must be thin in the parts with a small radius of curvature, in particular in the vicinity of the mast.
  • a slat according to the invention therefore consists of 2 thin strips, of constant thickness, of elongated rectangular shape, superimposed and assembled to each other at each of their ends over a certain length. , arranged (symmetrically) relative to their common junction plane, and filled in the central part located between these two ends joined by a plastic material, of variable thickness.
  • the plastic used can be either compact or in the form of foam.
  • the plastics material of the core can be lightened by the introduction of light bodies (for example hollow glass microbeads) or further reinforced by the addition of short or long fibers with high elasticity modulus (glass, carbon, SiC, etc. ..).
  • light bodies for example hollow glass microbeads
  • short or long fibers with high elasticity modulus glass, carbon, SiC, etc. ..
  • the slat In the absence of constraints, the slat has a median plane of symmetry; it only bends under the effect of the forces applied at its 2 ends and / or the wind on the sail.
  • Figure 1 shows the sail (1) of a windsurf board, fixed on a mast (3) and stiffened by slats (2), whose longitudinal profile, in use, is shown in Figure 2 .
  • FIG. 2 represents a desired profile of the sail (1), under the effect of the wind and the bending forces (F) applied to the ends of the batten.
  • the curvilinear abscissa of which is known, OP the deflection y can be determined, perpendicular to the chord OQ, of length L, and the radius of curvature R.
  • Figures 3 and 4 show an embodiment of a slat according to the invention.
  • This consists of 2 strips (4.4 ') made of Al 7075 T6 alloy (according to the designation of the Aluminum Association) 0.6 mm thick, glued together in the end zones ab and cd. In these areas, the total thickness is constant and close to 1.2 mm. In the area bc is interposed a core (5) of polyurethane foam, of variable thickness, so as to obtain the desired moment of inertia.
  • the total thicknesses are given in FIG. 3, as a function of the distance from the front end (0) of the batten (2).
  • the slat has a constant height over all its length, in a variant shown in FIG. 7, it is possible to vary the moment of inertia at the ends (areas ab and cd) by an axial recess (6).
  • the ends 0 and Q can be covered with plastic end caps (8,8 ') overmolded or attached to said ends, as shown in broken lines in FIG. 4.
  • the assembly was then placed against the walls of a form mold, the strips being separated by polyurethane shims.
  • the object of the invention is obviously not limited to slats for windsurfing boards. It can be applied to any use where it is necessary to obtain a flexible, very deformable and elastic beam, having a predetermined use profile, for example the sails of sailboats, flying wings, ULM, deer- ruffles, etc ...

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Glass Compositions (AREA)
EP87420014A 1986-01-16 1987-01-14 Metall-Kunststoff-Verbundsegellatte Withdrawn EP0233129A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8601120A FR2594788B1 (fr) 1986-01-16 1986-01-16 Lattes composites metallo-plastiques pour voile
FR8601120 1986-01-16

Publications (1)

Publication Number Publication Date
EP0233129A1 true EP0233129A1 (de) 1987-08-19

Family

ID=9331517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420014A Withdrawn EP0233129A1 (de) 1986-01-16 1987-01-14 Metall-Kunststoff-Verbundsegellatte

Country Status (3)

Country Link
EP (1) EP0233129A1 (de)
JP (1) JPS62168788A (de)
FR (1) FR2594788B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300714A1 (de) * 1987-07-17 1989-01-25 Raphael Saperstein Segellatte
EP0319167A1 (de) * 1987-11-26 1989-06-07 Chisso Corporation 2-Phenyl-5-alkanoyloxypyrimidine
GB2230243A (en) * 1989-04-12 1990-10-17 Howlett Ian C Sail batten
FR2649663A1 (fr) * 1989-04-26 1991-01-18 Dupre Patrick Systeme de tringles flexibles, preformees, permettant de transformer une surface souple en une structure rigide aerodynamique pouvant etre reversible
US5352311A (en) * 1992-07-02 1994-10-04 Composite Development Corporation Method of manufacturing a composite sail batten

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3018263B1 (fr) 2014-03-05 2017-12-08 Paul Duval Procede pour la fabrication de latte de voile et latte de voile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608172A (en) * 1946-10-11 1952-08-26 Biuw Carl Oscar Eric Sail batten
US3168068A (en) * 1964-03-09 1965-02-02 George A Lasko Batten for sails
US3581698A (en) * 1968-06-05 1971-06-01 John U Bete Sail batten
DE8528896U1 (de) * 1985-10-10 1985-11-28 Hubert Porkert KG, Saalfelden Segellatte

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608172A (en) * 1946-10-11 1952-08-26 Biuw Carl Oscar Eric Sail batten
US3168068A (en) * 1964-03-09 1965-02-02 George A Lasko Batten for sails
US3581698A (en) * 1968-06-05 1971-06-01 John U Bete Sail batten
DE8528896U1 (de) * 1985-10-10 1985-11-28 Hubert Porkert KG, Saalfelden Segellatte

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300714A1 (de) * 1987-07-17 1989-01-25 Raphael Saperstein Segellatte
EP0319167A1 (de) * 1987-11-26 1989-06-07 Chisso Corporation 2-Phenyl-5-alkanoyloxypyrimidine
GB2230243A (en) * 1989-04-12 1990-10-17 Howlett Ian C Sail batten
US5056449A (en) * 1989-04-12 1991-10-15 Howlett Ian C Sail batten
GB2230243B (en) * 1989-04-12 1993-08-11 Howlett Ian C Sail batten
FR2649663A1 (fr) * 1989-04-26 1991-01-18 Dupre Patrick Systeme de tringles flexibles, preformees, permettant de transformer une surface souple en une structure rigide aerodynamique pouvant etre reversible
US5352311A (en) * 1992-07-02 1994-10-04 Composite Development Corporation Method of manufacturing a composite sail batten
US5413060A (en) * 1992-07-02 1995-05-09 Composite Development Corporation Composite material sail batten and method of manufacture

Also Published As

Publication number Publication date
FR2594788B1 (fr) 1988-04-29
FR2594788A1 (fr) 1987-08-28
JPS62168788A (ja) 1987-07-25

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19870911

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Withdrawal date: 19871006

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BARIL, JACQUES