EP0050176A1 - Vorrichtung, um den Fahrbereich eines schnellen Schiffes zu vergrössern - Google Patents

Vorrichtung, um den Fahrbereich eines schnellen Schiffes zu vergrössern Download PDF

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Publication number
EP0050176A1
EP0050176A1 EP80401498A EP80401498A EP0050176A1 EP 0050176 A1 EP0050176 A1 EP 0050176A1 EP 80401498 A EP80401498 A EP 80401498A EP 80401498 A EP80401498 A EP 80401498A EP 0050176 A1 EP0050176 A1 EP 0050176A1
Authority
EP
European Patent Office
Prior art keywords
hull
transom
flap
ship
fins
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Withdrawn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
EP80401498A
Other languages
English (en)
French (fr)
Inventor
Michel Ebersolt
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
Priority to EP80401498A priority Critical patent/EP0050176A1/de
Publication of EP0050176A1 publication Critical patent/EP0050176A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/22—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type with adjustable planing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/28—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B39/061—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water by using trimflaps, i.e. flaps mounted on the rear of a boat, e.g. speed boat

Definitions

  • the hull of a fast vessel, monohull or multihull is characterized by the fact that the area of the hull cross sections, submerged at rest varies in small proportions from the middle to the rear.
  • the rear of the vessel called array has a width at the waterline comparable to the maximum width, similarly the draft at the rear can be close to the maximum draft.
  • the water lines are almost parallel to each other or slightly closed, they end up on the submerged part of the painting.
  • the rear volumes must be large and the bottom must be as flat as possible so as to collect the lift and Archimedes' thrust necessary to counteract the nose-up effects of the game. before.
  • the high speed domain requires much more installed power than the shapes described above.
  • the width of the transom prevents the water streams from closing properly behind the transom, which creates a loss of power materialized by disorderly turbulence in this area.
  • the invention therefore relates to a device making it possible to reduce the power necessary for advancing at low speeds of a ship whose hull is intended to allow hydroplaning at high speed, said hull having in its rear part a narrowed shape. compared to the theoretically desirable shape for hydroplaning, without modification of the transom.
  • This device consists of at least one lift flap which is arranged in the vicinity of the transom, and which has an elongated structure extending substantially perpendicular to the longitudinal plane of symmetry of the ship.
  • this at least one flap consists of two fins, which are arranged on each side of the rear part of the shell, and which are retractable.
  • lateral housings are provided in the walls of the hull to allow the retraction of the ailerons by rotation about an axis parallel to the longitudinal plane of symmetry, printed by a jack.
  • this at least one flap is constituted by a single fin located below and behind the rear panel, orientable and retractable by means of a jack and an axis.
  • this at least one flap comprises two flaps articulated around axes located at the intersection of the bottom of the hull and the transom, and moved by jacks allowing their orientation and their retraction.
  • the fins are orientable around transverse axes substantially perpendicular to the longitudinal plane of symmetry of the ship.
  • the device in accordance with the invention, comprises a hull derived from that of a fast vessel fitted with aft fins. This transformation is carried out by cutting off symmetrical lateral volumes with respect to the vertical plane of symmetry P (and from the line of the centers). The cross section of these volumes, zero near the mid-length, increases continuously to the rear. The section of these volumes is defined by the fact that the trace of the walls of the transformed hull is substantially parallel to the trace of the walls of the initial hull.
  • the forward component of the hydrostatic thrust is used; it also benefits from a decrease in wet area.
  • the effect of lift of the bottom which remains, is retained, and one can still benefit from the component of the hydrostatic pressure of the water on the forward walls.
  • fins that are as active as the surfaces and volumes removed. A lower wetted surface is also obtained. These fins can be retractable so as not to brake the slow-moving ship and swiveling at fast speeds to adjust the nose-up as best as possible.
  • FIG. 1 the volume of the hull 1 is shown at its floatation at rest 2. From a vertical transverse plane 3 located in the vicinity of the middle, the width of the hull is gradually reduced until the transom 4, reducing the hull volume of the two lateral tabs 5. The new wall 6 is parallel to the old one 7. The lateral portions 8 of the bottom are removed, the central portion 9 remaining.

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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP80401498A 1980-10-22 1980-10-22 Vorrichtung, um den Fahrbereich eines schnellen Schiffes zu vergrössern Withdrawn EP0050176A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP80401498A EP0050176A1 (de) 1980-10-22 1980-10-22 Vorrichtung, um den Fahrbereich eines schnellen Schiffes zu vergrössern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80401498A EP0050176A1 (de) 1980-10-22 1980-10-22 Vorrichtung, um den Fahrbereich eines schnellen Schiffes zu vergrössern

Publications (1)

Publication Number Publication Date
EP0050176A1 true EP0050176A1 (de) 1982-04-28

Family

ID=8187398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401498A Withdrawn EP0050176A1 (de) 1980-10-22 1980-10-22 Vorrichtung, um den Fahrbereich eines schnellen Schiffes zu vergrössern

Country Status (1)

Country Link
EP (1) EP0050176A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141388A (en) * 1983-06-14 1984-12-19 David A Mason Rear extension for boat hull
DE3741758A1 (de) * 1987-12-09 1989-06-29 Messerschmitt Boelkow Blohm Segeljacht
US7174843B1 (en) * 2005-10-19 2007-02-13 Tossavainen Raimer E Hydrofoil unit for attaching to the stern of the hull of a boat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1139479A (fr) * 1955-12-14 1957-07-01 Dispositif amovible, capable de rendre propres à plusieurs usages, certaines coques de bateaux
US3707936A (en) * 1970-09-17 1973-01-02 H Harris Boat hull construction
US3814044A (en) * 1972-11-07 1974-06-04 F Kercheval Boat leveler tab
FR2234178A1 (de) * 1973-06-25 1975-01-17 With Bror
US3980035A (en) * 1974-12-23 1976-09-14 Johansson Sten E Attitude control devices for stern drive power boats
FR2454956A1 (fr) * 1979-04-25 1980-11-21 Ebersolt Michel Dispositif permettant d'augmenter le rayon d'action d'un navire rapide

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1139479A (fr) * 1955-12-14 1957-07-01 Dispositif amovible, capable de rendre propres à plusieurs usages, certaines coques de bateaux
US3707936A (en) * 1970-09-17 1973-01-02 H Harris Boat hull construction
US3814044A (en) * 1972-11-07 1974-06-04 F Kercheval Boat leveler tab
FR2234178A1 (de) * 1973-06-25 1975-01-17 With Bror
US3980035A (en) * 1974-12-23 1976-09-14 Johansson Sten E Attitude control devices for stern drive power boats
FR2454956A1 (fr) * 1979-04-25 1980-11-21 Ebersolt Michel Dispositif permettant d'augmenter le rayon d'action d'un navire rapide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141388A (en) * 1983-06-14 1984-12-19 David A Mason Rear extension for boat hull
DE3741758A1 (de) * 1987-12-09 1989-06-29 Messerschmitt Boelkow Blohm Segeljacht
US7174843B1 (en) * 2005-10-19 2007-02-13 Tossavainen Raimer E Hydrofoil unit for attaching to the stern of the hull of a boat

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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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AK Designated contracting states

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18W Application withdrawn

Withdrawal date: 19821018