FR2591180A1 - Device for decreasing the friction on a boat hull - Google Patents

Device for decreasing the friction on a boat hull Download PDF

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Publication number
FR2591180A1
FR2591180A1 FR8518551A FR8518551A FR2591180A1 FR 2591180 A1 FR2591180 A1 FR 2591180A1 FR 8518551 A FR8518551 A FR 8518551A FR 8518551 A FR8518551 A FR 8518551A FR 2591180 A1 FR2591180 A1 FR 2591180A1
Authority
FR
France
Prior art keywords
hull
air
water
friction
decreasing
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Withdrawn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
FR8518551A
Other languages
French (fr)
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 FR8518551A priority Critical patent/FR2591180A1/en
Priority claimed from EP87480001A external-priority patent/EP0293538A1/en
Publication of FR2591180A1 publication Critical patent/FR2591180A1/en
Withdrawn legal-status Critical Current

Links

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
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
    • 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
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
    • B63B2001/387—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes using means for producing a film of air or air bubbles over at least a significant portion of the hull surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

Device for decreasing the braking phenomenon due to the friction between the hull and the water and the suction effect caused by the structure of the hull. It consists, in the port and starboard heights, of a watertight pipe 1 into which emerge the non-return valves 2 fixed to the tubes 3 whose main part 4 is built into the structure of the hull 6 and whose lower bevelled end 5 emerges flush with the said hull; the lips 7 are arranged lengthwise under the waterline over the whole surface in order to contain and channel the layer of air.

Description

La présente invention concerne un dispositif pour diminuer l'éffet de fréinage cause par le par le frottement de l'eau sur la coque , et de ventouse produit par la structure
Le dispositif selon l'invention permet à une coque munie du système de parcourir une distance bien plus grande avec une surface de voile et une coque de mème valeur q'une unitb classique ; et par conséquant une considérable économie de carburant au moteur
Le système permet la diminution du phénomène de freinage , par la friction de l'eau sur la coque , en interposant une couche d'air , apportée par des aérateurs
L'air ce trouve aspire et injecté le long de la coque par l'aspiration provoque due au système , et a la consistance plus lourde de l'eau par rapport à celle de l'air
I1 est donné à titre d'exemple non limitatif un mode de réalisation se référant aux déssins ci-annéxés
Planche I/I . fig I et fig 2 . Vue tribord de la coque en perspective (6) colportant la canalisation (I) hermétique à l'eau et disposée sur la partie haute, destinée à recevoir les clapets (2) antireteur, évitant la remontée de l'eau ; et fixés aux tubes (3) prévu pour le transfer de l'air vers la partie immergée
La partie courante (4) des dit tubes , se trouve insérée dans la structure de la coque (6) leur extrémitée buse se termine en sifflet (5) incliné longitudinalement vers l'arriere leur débouché à fleur de la dite coque ; de sorte a provoquer le phénoimène d'aspiration de l'air par l'eau et de créer la couche d'air favorisant la glisse ; pour concerver toute l'éffica- cité sur toute la surface immergée , des livres (7) seront disposes dans le sens de la longueur The present invention relates to a device for reducing the effect of braking caused by the friction of the water on the hull, and of the suction cup produced by the structure
The device according to the invention allows a hull fitted with the system to travel a much greater distance with a sail area and a hull of the same value as a conventional unit; and consequently a considerable saving of fuel to the engine
The system allows the reduction of the braking phenomenon, by the friction of the water on the hull, by interposing a layer of air, brought by aerators
The air it finds sucks and injected along the hull by the suction causes due to the system, and to the heavier consistency of the water compared to that of the air
I1 is given by way of nonlimiting example an embodiment referring to the drawings appended hereto
Plate I / I. fig I and fig 2. Starboard view of the hull in perspective (6) peddling the pipe (I) hermetic to the water and arranged on the upper part, intended to receive the check valves (2), preventing the rising of the water; and fixed to the tubes (3) provided for the transfer of air to the submerged part
The main part (4) of said tubes is inserted into the structure of the shell (6), their extremity nozzle ends in a whistle (5) inclined longitudinally towards the rear, their outlet flush with said shell; so as to cause the phenoimene to suck in air from the water and create the layer of air favoring sliding; to keep all the efficiency over the entire submerged surface, books (7) will be arranged lengthwise

Claims (1)

REVENDICATION CLAIM I Dispositif pour créer une couche d'air entre la partie de la coque immergées et l'eau afin que le phénomène de freinage par frottement oe trouve réduit au siniila caractérisé en ce qu'il colporte dans les haute une canalisation (I) bermétique a l'eau charger de l'apport d'air dans laquelle débouche les clapets anti-retour (2) aux quels c. fixent les tubes (3) chargés du transfert de l'air par leur partie courante (4) insérée dans la structure de la coque (6) débouchant de la partie immergée en forme de sifflets (5) ou l'aspiration produite par l'éffet de succion causé par le déplacement de la coque sur l'eau aspire l'air qui est canalisé par les lèvres (7) sur toute la longueur  I Device for creating a layer of air between the submerged part of the hull and the water so that the friction braking phenomenon is reduced to a minimum, characterized in that it spreads bermetic pipe (I) at the top the water charge with the air supply into which the non-return valves (2) open to which c. fix the tubes (3) responsible for the transfer of air through their current part (4) inserted into the structure of the shell (6) emerging from the submerged part in the form of whistles (5) or the suction produced by the suction effect caused by the displacement of the shell over the water sucks in the air which is channeled through the lips (7) over the entire length
FR8518551A 1985-12-09 1985-12-09 Device for decreasing the friction on a boat hull Withdrawn FR2591180A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8518551A FR2591180A1 (en) 1985-12-09 1985-12-09 Device for decreasing the friction on a boat hull

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8518551A FR2591180A1 (en) 1985-12-09 1985-12-09 Device for decreasing the friction on a boat hull
EP87480001A EP0293538A1 (en) 1987-06-04 1987-06-04 Device to reduce the friction of a boat-hull

Publications (1)

Publication Number Publication Date
FR2591180A1 true FR2591180A1 (en) 1987-06-12

Family

ID=26112465

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8518551A Withdrawn FR2591180A1 (en) 1985-12-09 1985-12-09 Device for decreasing the friction on a boat hull

Country Status (1)

Country Link
FR (1) FR2591180A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293538A1 (en) * 1987-06-04 1988-12-07 Charles Guibernao Device to reduce the friction of a boat-hull
EP0298052A1 (en) * 1987-07-01 1989-01-04 AKZO S.r.l. Motor boat

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR367263A (en) * 1906-06-19 1906-10-25 Wittmann Strassmann Company Device for speeding up the movement of ships and for steering them
FR842375A (en) * 1938-02-11 1939-06-12 Improvement in machines moving on water, and in particular in hydrofoils, seaplane floats, etc.
FR1592995A (en) * 1968-11-25 1970-05-19
DE2712407A1 (en) * 1977-03-22 1978-09-28 Harald Biesterfeldt Vessel with surface friction reduction equipment - uses air pressurised by sail effect or blower to provide layer between hull and water and floats on outriggers from masts to prevent capsize

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR367263A (en) * 1906-06-19 1906-10-25 Wittmann Strassmann Company Device for speeding up the movement of ships and for steering them
FR842375A (en) * 1938-02-11 1939-06-12 Improvement in machines moving on water, and in particular in hydrofoils, seaplane floats, etc.
FR1592995A (en) * 1968-11-25 1970-05-19
DE2712407A1 (en) * 1977-03-22 1978-09-28 Harald Biesterfeldt Vessel with surface friction reduction equipment - uses air pressurised by sail effect or blower to provide layer between hull and water and floats on outriggers from masts to prevent capsize

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293538A1 (en) * 1987-06-04 1988-12-07 Charles Guibernao Device to reduce the friction of a boat-hull
EP0298052A1 (en) * 1987-07-01 1989-01-04 AKZO S.r.l. Motor boat

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