EP0427961A1 - Spinnaker construction - Google Patents

Spinnaker construction Download PDF

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Publication number
EP0427961A1
EP0427961A1 EP90119588A EP90119588A EP0427961A1 EP 0427961 A1 EP0427961 A1 EP 0427961A1 EP 90119588 A EP90119588 A EP 90119588A EP 90119588 A EP90119588 A EP 90119588A EP 0427961 A1 EP0427961 A1 EP 0427961A1
Authority
EP
European Patent Office
Prior art keywords
spinnaker
hole
construction
closed
center
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Withdrawn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
EP90119588A
Other languages
German (de)
French (fr)
Inventor
Josef-Ferdinand Dipl.-Ing. Menke
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0427961A1 publication Critical patent/EP0427961A1/en
Withdrawn legal-status Critical Current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
    • 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
    • B63H9/067—Sails characterised by their construction or manufacturing process

Definitions

  • the invention relates to a special design of a spinnaker for sailing yachts with a hole in the center of the spinnaker.
  • the invention is based on the object of realizing a spinnaker which is optimally flowed around in all wind conditions and thus provides optimum propulsion for the ship.
  • the hole in the center of the spinnaker acts like a nozzle, as a result of which air currents are formed which are directed radially away from the hole. These currents inflate the spinnaker. If the wind is strong enough, the hole can be closed by a flap.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)
  • Wind Motors (AREA)

Abstract

The invention describes a spinnaker which is provided with a hole in the centre. The hole can be closed when required. This hole results in optimum flow conditions for the spinnaker in all wind conditions. <IMAGE>

Description

Die Erfindung betrifft eine spezielle Bauform eines Spinnakers für Segeljachten mit einem Loch in der Mitte des Spinnakers.The invention relates to a special design of a spinnaker for sailing yachts with a hole in the center of the spinnaker.

Spinnaker sind eine bewährte Art der Besegelung für Segeljachten, die vor dem Wind fahren. Im Laufe der Jahre haben sich vielfältige Formen herausgebildet. Allen gemeinsam ist aber, daß es sich jeweils um eine geschlossene Segeltuchfläche handelt, die le­diglich in Zuschnitt und Formgebung variiert wird. Strömungstechnisch stellen solche Flächen aber nicht für alle Windverhältnisse das Optimum dar.Spinnakers are a proven type of sail for sailing yachts that sail upwind. Over the years, various forms have emerged. What they all have in common is that each is a closed canvas surface that is only varied in terms of cut and shape. In terms of flow technology, such surfaces are not the optimum for all wind conditions.

Der Erfindung liegt die Aufgabe zugrunde, einen Spinnaker zu realisieren, der bei allen Windver­hältnissen optimal umströmt wird und damit einen optimalen Vortrieb für das Schiff liefert. Insbe­sondere bei geringen Windgeschwindigkeiten wirkt das Loch in der Spinnakermitte wie eine Düse, wo­durch sich Luftströmungen ausbilden, die radial vom Loch weg gerichtet sind. Diese Strömungen blähen den Spinnaker auf. Bei hinreichend starkem Wind kann das Loch durch eine Klappe verschlossen wer­den.The invention is based on the object of realizing a spinnaker which is optimally flowed around in all wind conditions and thus provides optimum propulsion for the ship. In particular at low wind speeds, the hole in the center of the spinnaker acts like a nozzle, as a result of which air currents are formed which are directed radially away from the hole. These currents inflate the spinnaker. If the wind is strong enough, the hole can be closed by a flap.

Claims (2)

1. Spezielle Bauform eines Spinnakers für Segel­jachten, dadurch gekennzeichnet, daß sich in der Mitte des Spinnakers ein Loch befindet, das je nach Schiff und Anwendung einige Prozent der Spinnakerfläche ausmacht.1. Special design of a spinnaker for sailing yachts, characterized in that there is a hole in the center of the spinnaker which, depending on the ship and application, makes up a few percent of the spinnaker surface. 2. Spinnaker nach Anspruch 1, dadurch gekennzeich­net, daß sich die Öffnung bei Bedarf auch ver­schließen läßt.2. Spinnaker according to claim 1, characterized in that the opening can also be closed if necessary.
EP90119588A 1989-10-13 1990-10-12 Spinnaker construction Withdrawn EP0427961A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934240A DE3934240A1 (en) 1989-10-13 1989-10-13 SPECIAL DESIGN FOR SPINNAKER
DE3934240 1989-10-13

Publications (1)

Publication Number Publication Date
EP0427961A1 true EP0427961A1 (en) 1991-05-22

Family

ID=6391425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119588A Withdrawn EP0427961A1 (en) 1989-10-13 1990-10-12 Spinnaker construction

Country Status (2)

Country Link
EP (1) EP0427961A1 (en)
DE (1) DE3934240A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1299061A (en) * 1961-06-08 1962-07-20 Improvements to boat sails
GB902010A (en) * 1959-04-24 1962-07-25 Carlton Tyre Saving Co Ltd Improvements in sails and parachutes
FR83313E (en) * 1963-01-10 1964-07-24 Improvements to boat sails
FR1555702A (en) * 1967-10-31 1969-01-31

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB902010A (en) * 1959-04-24 1962-07-25 Carlton Tyre Saving Co Ltd Improvements in sails and parachutes
FR1299061A (en) * 1961-06-08 1962-07-20 Improvements to boat sails
FR83313E (en) * 1963-01-10 1964-07-24 Improvements to boat sails
FR1555702A (en) * 1967-10-31 1969-01-31

Also Published As

Publication number Publication date
DE3934240A1 (en) 1991-04-18

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