EP0192688A1 - Symmetrisches rigg. - Google Patents
Symmetrisches rigg.Info
- Publication number
- EP0192688A1 EP0192688A1 EP85904247A EP85904247A EP0192688A1 EP 0192688 A1 EP0192688 A1 EP 0192688A1 EP 85904247 A EP85904247 A EP 85904247A EP 85904247 A EP85904247 A EP 85904247A EP 0192688 A1 EP0192688 A1 EP 0192688A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sail
- rig
- rig according
- spars
- longitudinal
- 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.)
- Granted
Links
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
Definitions
- the invention relates to a rig according to the preamble of claim 1.
- a rig is known from the specialist literature (DE magazine “Surf”, issue 12/83, page 49).
- the mast-like spars of the rig specified there form a circumferential frame which comprises a bowl-shaped, oval sail surface.
- the cloth sail is continuously attached to the frame at the edges and apparently has no shaping elements such as battens or special spars.
- a rig of the same construction is mentioned in DE magazine “Surf”, issue 7/84, page 10.
- the curved shape of the mast spars also has a disadvantage. Either they adapt to the curved sail outline as slender, straight rods and are deformed very strongly under wind pressure, or they are pre-curved in a stronger design, which in turn leads to higher costs and storage problems.
- the formation of a symmetrical rig without mast-like spars on the longitudinal edges of the sail is known from US Pat. No. 4,369,724.
- the longitudinal edges of the sail are held by wire ropes, which in turn are attached to a load-bearing mast-boom combination.
- a double sail is stretched between the wire ropes, inside which there is the mast and half of the boom.
- the invention is based on the object of designing a rig of the type mentioned in such a way that longitudinal spars on the sail edges are eliminated and the sail area is made largely free of deformation by suitable additional components.
- the bowl-shaped sail area with the stiffening elements is to form a composite component by expedient arrangement and connection of all parts to one another, which, due to its favorable load-bearing behavior, enables a reduction in the dimensions of the individual elements, in particular the longitudinal spars.
- the object is achieved in the generic rig by the characterizing features of claim 1. Appropriate embodiments of the invention result from the subclaims.
- the sail area Due to the stiffening effect of the dimensionally stable cross frame, the sail area, which is under tension from all sides, is largely free of deformation. Uncontrollable changes in the curvature of the sail are eliminated.
- the rig thus acts like a rigid profile sail with the known aerodynamic advantages, as can be achieved with asymmetrical profile sails only by multi-part profile parts which can be rotated relative to one another. 3.
- FIG. 1 shows the view of the rig in perspective with a cross frame consisting of elastic cross spars and adjustable drawstrings.
- FIG. 2 shows the view of the cross frame consisting of elastic cross spars and adjustable drawstrings in perspective
- Figure 3 shows the longitudinal section through the rig as a basic illustration
- Figure 4 shows the top view of the rig as a basic illustration
- Figure 5 shows the view of the rig in a perspective view
- FIGS. 6 and 8 the view of a typical rib, seen in the longitudinal direction of the rig, FIG. 7, sections a-a and b-b to FIGS. 6 and 8
- Figure 9 shows the view of the rib connected to the handle, seen in the longitudinal direction of the rig.
- Figure 1 shows an overview of the various components of the rig in an advantageous embodiment with a longitudinal spar 2 and three transverse frames 1,3,6, one of which is provided with a handle bar.
- the sail surface 1, which is doubly curved and preformed during manufacture, is made of high-strength material and is only connected to the longitudinal spars and transverse frames at the edges via short insertion tabs or straps.
- the rig gets its final shape by tensioning the sail area 1 against the longitudinal spar 2 at the base of the rig.
- the rig is guided by the sailor with the handle bar 4.
- the line 7 is used in a known manner for pulling up the rig with the special feature that the upper end of the line 7 can be moved over a ring on the tension band 6 of the holding frame. This allows the rig to be pulled up on one side or the other as desired.
- the cross frame shown in Figure 2 consists of the cross spar 3, the associated drawstring 6 and the sail area 1 located in the area of the cross frame.
- the three elements form a structural unit.
- the intended circular curvature of the transverse spars 3 and the necessary dimensional stability of the transverse frame only come about after tensioning the adjustable tension band 6.
- the drawstring 6 in turn is attached to eyelets of the sail area 1, so that * when tensioning the sail is put under tension and abuts the crossbar 3.
- FIG. 3 shows in longitudinal section of the rig, the longitudinal spar 2, which follows the apex line A-C-D of the sail area 1.
- the significant kink of the longitudinal spars 2 and the sail area 1 at the level of the grip strip 4 considerably reduces the stress and thus the deformation of the longitudinal spars 2 as a result of the pressure force and is necessary in order to keep the dimensions of the longitudinal spars 2 within limits.
- a slight longitudinal curvature is also formed in sections A-C and C-D in sail area 1. If the straight longitudinal spar 2 is tensioned against the sail surface 1 during construction, it must follow the curvature and develop restoring forces which, according to FIG. 4, generate tensile stresses in the sail surface 1 essentially along the lines A-B-D and A-B-D, i.e. along the sail edges. As a result, the rig is dimensionally stable and self-supporting without external load.
- the mode of operation of the rig described here is not limited to the combination of a longitudinal spar 2 with three transverse frames. Depending on the size and special requirements, these parts can be used in any number and combination.
- a reinforcement of the sail area 1 in highly stressed areas by tapes, ropes or other suitable materials is also useful in special cases.
- a further preferred embodiment of the rig is shown in FIG. 5.
- the multi-part cross frames 1, 3, 6 of the embodiment described in FIGS. 1-4 are replaced in FIG. 5 by one-piece, stiffer and more manageable ribs 8.
- the advantages of this type of construction lie in the faster and simplified assembly and disassembly of the rig.
- the previously necessary trimming of each transverse frame 1, 3, 6 with the aid of the drawstrings 6 is eliminated.
- the deformation of the transverse frame due to the wind pressure is reduced thanks to the better distribution of the stiffness of the ribs.
- FIG. 5 shows the preferred embodiment of the rig with a longitudinal spar 2 and a plurality of transverse frames consisting of the ribs 8.
- the mutual spacing of the ribs 8 is significantly reduced compared to the arrangement of the cross frame 1,3,6. There is no need to use conventional battens between the ribs 8.
- the longitudinal spar 2 is guided according to FIG. 6 through openings 9 in the ribs 8. This results in a simple, non-positive and in the assembled state uhverschiebbar connection between the ribs 8 and the ' longitudinal spar 2.
- the ends of the ribs 8 are connected to the sail area 1 in a known manner by short insertion tabs 13.
- the ribs 8 are first laid flat on the spread sail surface 1, the stretched width of which corresponds to the arc length of the rib 8 between the insertion tabs 13. Since only the shorter chord length between the rib ends is required to insert the rib 8, the rib 8 can be easily inserted into the insertion tabs 13.
- the rib 8 is turned 90 into the final position, the sail surface 1 lies against the leeward, curved rear side of the rib 8 and is tensioned at the same time.
- the longitudinal spar 2 then passed through the opening 9 secures the rib 8 against unintentional turning back.
- variable rib cross section in FIG. 6 is evident from the associated cuts in FIGS. 7 and 8.
- the approximately flat-triangular cross-sectional shape according to section aa is approximately retained in the outer quarters of the rib length. From the quarter point on, the cross-sectional height then increases progressively up to the center of the rib according to section bb, the cross-section being in a narrow rectangle transforms.
- FIGS. 7 and 8 apply when wood is used as a building material.
- open or closed profile cross sections with or without foaming are preferred, depending on the manufacturing process, while preserving the outer contour.
- the design of the ribs 8 described here is on the one hand adapted to the stress caused by the wind forces and thus leads to less rib deformation. On the other hand, it enables the formation of the rib opening 9 for the advantageous, simple connection of the rib 8 to the longitudinal spar 2.
- FIG. 9 shows further improvements in the details of the rib 8 connected to the handle bar 4. Since in this cross frame the full sail force occurring in the longitudinal spar 2 must be transmitted to the surfer via the handle bar 4, an adjustable drawstring 10 becomes between the center of the rib 8 and the middle of the handle bar 4, which largely reduces the stress and thus the deformation of the rib 8 and the handle bar 4. Furthermore, the tension band 6 present in FIG. 1 for guiding the starting sheet 7 is retained with the change that the ends of the tension band 6 are fastened to the articulation points 11 of the grip strip 4.
- an oval opening 12 shown in FIG. 5 is also provided in the sail area 1. It serves as a sail window and at the same time as an expansion compensator for sail area 1.
- the highly stressed areas of the sail area 1 on both sides of the opening 12 suffer over time a plastic, irreversible deformation ("sail bar") in the longitudinal direction of the sail, which in turn leads to a reduction in the kink formed in the sail area 1 at the level of the handle bar 4 leads.
- This undesirable effect can be eliminated by the fact that the sail surface 1 in the area of the longitudinal spars 2 is also stretched in the longitudinal direction.
- the opening 12 is closed by an easily deformable material which yields when the longitudinal spars 2 are tightened against the sail surface 1 and thus leads to the required expansion. It is important to ensure that reinforcement strips made of canvas or other low-stretch material running parallel to the longitudinal axis of the sail are avoided within the opening 12.
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)
- Wind Motors (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Catalysts (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85904247T ATE40968T1 (de) | 1984-08-31 | 1985-08-28 | Symmetrisches rigg. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3432099 | 1984-08-31 | ||
DE3432099A DE3432099C2 (de) | 1984-08-31 | 1984-08-31 | Symmetrisches Rigg |
DE3514270 | 1985-04-19 | ||
DE3514270A DE3514270C1 (de) | 1985-04-19 | 1985-04-19 | Symmetrisches Rigg |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0192688A1 true EP0192688A1 (de) | 1986-09-03 |
EP0192688B1 EP0192688B1 (de) | 1989-03-01 |
Family
ID=25824351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85904247A Expired EP0192688B1 (de) | 1984-08-31 | 1985-08-28 | Symmetrisches rigg |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0192688B1 (de) |
AU (1) | AU4775385A (de) |
DK (1) | DK197986A (de) |
ES (1) | ES8701644A1 (de) |
WO (1) | WO1986001481A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3540646C2 (de) * | 1985-11-15 | 1987-04-23 | Peter Dr.-Ing. 8000 München Plica | Rippe für ein symmetrisches Rigg |
DE3601510C1 (de) * | 1986-01-20 | 1987-07-16 | Peter Dr-Ing Plica | Gabelbaum fuer ein symmetrisches Rigg |
FR2597066A1 (fr) * | 1986-04-10 | 1987-10-16 | Bard Gerald | Ensemble propulsif avec voile symetrique |
DE10348598A1 (de) * | 2003-07-29 | 2005-02-24 | Eisenberg, Hans Jochen | Fahnenartiger Werbeträger |
FR3027281B1 (fr) * | 2014-10-21 | 2018-03-23 | Fabrice Baronnet | Greement simplifiant les manoeuvres de changement d'amure |
FR3098187A1 (fr) * | 2019-07-02 | 2021-01-08 | F.One | Aile de traction autonome |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3173395A (en) * | 1963-04-18 | 1965-03-16 | Price Ranch | Double ended sailboat |
US3707935A (en) * | 1970-09-16 | 1973-01-02 | J Rachie | Surfing sailboat |
EP0083806B1 (de) * | 1982-01-06 | 1987-08-12 | Bram Jan Voslamber | Segel und Rigg für ein Segelfahrzeug |
FR2548621A1 (fr) * | 1983-07-04 | 1985-01-11 | Comte Francois | Greement pour planche a voile |
CH655472B (de) * | 1983-07-06 | 1986-04-30 |
-
1985
- 1985-08-28 AU AU47753/85A patent/AU4775385A/en not_active Abandoned
- 1985-08-28 WO PCT/EP1985/000438 patent/WO1986001481A1/de active IP Right Grant
- 1985-08-28 EP EP85904247A patent/EP0192688B1/de not_active Expired
- 1985-08-30 ES ES546614A patent/ES8701644A1/es not_active Expired
-
1986
- 1986-04-30 DK DK197986A patent/DK197986A/da not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8601481A1 * |
Also Published As
Publication number | Publication date |
---|---|
DK197986D0 (da) | 1986-04-30 |
EP0192688B1 (de) | 1989-03-01 |
WO1986001481A1 (en) | 1986-03-13 |
ES8701644A1 (es) | 1986-12-01 |
ES546614A0 (es) | 1986-12-01 |
DK197986A (da) | 1986-04-30 |
AU4775385A (en) | 1986-03-24 |
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