WO2019212388A1 - Procédé de création d'une poussée d'aile sous-marine - Google Patents

Procédé de création d'une poussée d'aile sous-marine Download PDF

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Publication number
WO2019212388A1
WO2019212388A1 PCT/RU2019/000283 RU2019000283W WO2019212388A1 WO 2019212388 A1 WO2019212388 A1 WO 2019212388A1 RU 2019000283 W RU2019000283 W RU 2019000283W WO 2019212388 A1 WO2019212388 A1 WO 2019212388A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydrofoil
wing
lower edge
ejector
holes
Prior art date
Application number
PCT/RU2019/000283
Other languages
English (en)
Russian (ru)
Inventor
Эдуард Васильевич ОЛЬХОВСКИЙ
Original Assignee
Olkhovskii Eduard Vasilevich
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 Olkhovskii Eduard Vasilevich filed Critical Olkhovskii Eduard Vasilevich
Publication of WO2019212388A1 publication Critical patent/WO2019212388A1/fr

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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
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type

Definitions

  • the invention relates to the field of shipbuilding, in particular to the design of the wings of hydrofoils and horizontal rudders of underwater vehicles.
  • the proposed method for creating the lifting force of a hydrofoil is applicable in a wide range of speeds and has a significant energy gain in comparison with the prototype, in which the angle of attack is increased to create increased lifting force during acceleration.
  • the technical result of the invention is the creation of an underwater wing of the vessel, which has low power consumption and high hydrodynamic quality.
  • This goal is achieved by the fact that on the lower edge of the wing creates a system of blind holes perpendicular to the chord of the wing or tilted in the direction of flow.
  • the holes can be round, ellipsoidal, conical with a base on the lower edge, pyramidal with a base on the lower edge or square.
  • the effectiveness of the system is determined by the ratio of the length of the holes to the cross-sectional area or the average cross-sectional area. The greater the length in "calibers", the higher the efficiency of the ejector holes.
  • the control of the lifting force (its change) is carried out by changing the angle of attack of the ejector hydrofoil to positive or negative angles.
  • the increase in lift occurs with an increase in negative angles of attack. This is because on the lower edge due to the characteristic curvature, as the negative angle of attack increases, the flow velocity in the boundary layer increases compared with the upper edge, and thereby the ejector effect sharply increases. The reaction of the medium to voids creates pressure on the lower edge.
  • the lifting force of the “inverted wing” created due to the difference between the flows around the upper and lower edges is directed downward in this case, it is subtracted from it during vector addition with the resulting force arising in the ejector holes.
  • the ejector component of the resulting force is several times (2-times) larger and thereby we gain in the total force.
  • FIG. 1 shows a section through an ejector hydrofoil.
  • FIG. 2 shows a section of an ejector hydrofoil downstream with a characteristic curvature at the lower edge.
  • FIG. 3 shows a part of an ejector sub-wing in a section in isometry.
  • FIG. 4 shows a part of an ejector hydrofoil with a characteristic curvature at the lower edge in isometry.
  • the operation of the ejector wing is illustrated by the positions: (Fig.1,2, 3,4) wing 1, blind holes 2, the lower edge of the wing 3, the upper edge of the wing 4.
  • the ejector wing works as follows:
  • blind holes 2 located on the lower edge of the wing 3 perpendicular to the chord of the wing or with an inclination towards the flow.
  • the lower edge 3 of the wing is surrounded by an oncoming flow, while water is sucked (ejected) from the holes 2, forming a total zone of reduced pressure.
  • the reaction of the medium to voids creates pressure on the lower edge.
  • the larger the angle of attack of the wing the greater the ejection effect due to the greater flow velocity and, accordingly, large ejection angles.
  • the zone of creation of the lifting force of the wing using the ejection holes can be considered from 0 degrees to the zone of flow stall - this depends on the speed of the incoming flow and the shape of the wing.
  • the formation of the lifting force depends on the depth of the blind holes, the diameter of the holes or their average area, their inclination in the flow, the total area of the holes on the lower edge, the flow velocity and its angle with respect to the lower edge.
  • the lower edge Since the lifting force of the wing is formed due to the ejection of water from the holes, the lower edge has a total pressure caused by the reaction of the medium to voids, significantly larger than the upper one and creates a significantly higher lifting force with respect to the ordinary wing at the same speeds and angles of attack, respectively, in the negative and plus side.
  • a method for creating the lifting force of a hydrofoil and an ejector hydrofoil of Olkhovsky allows to achieve a significant gain in the energy of hydrofoil vessels when they move in water by creating a significantly higher lifting force (two to three times) at the same cost energy.

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)
  • Hydraulic Turbines (AREA)

Abstract

L'invention concerne le génie naval et porte notamment sur des structures d'ailes sous-marines pour navires et canots. Le résultat technique consiste à créer une aile sous-marine d'un navire qui présente une faible consommation d'énergie et une finesse hydrodynamique élevée. Selon l'invention, pour créer une poussée d'aile sous-marine, qui comprend un bord inférieur et un bord supérieur avec un degré de courbure caractéristique, on crée sur le bord inférieur de l'aile sous-marine d'éjection un système de trous borgnes perpendiculaires à la corde ou avec une inclinaison en direction du flux.
PCT/RU2019/000283 2018-05-03 2019-04-19 Procédé de création d'une poussée d'aile sous-marine WO2019212388A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2018116409 2018-05-03
RU2018116409 2018-05-03

Publications (1)

Publication Number Publication Date
WO2019212388A1 true WO2019212388A1 (fr) 2019-11-07

Family

ID=68386506

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2019/000283 WO2019212388A1 (fr) 2018-05-03 2019-04-19 Procédé de création d'une poussée d'aile sous-marine

Country Status (1)

Country Link
WO (1) WO2019212388A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2261558A (en) * 1939-02-28 1941-11-04 Orloff Benjamin Fluid supported vehicle and method of producing the same
US3006307A (en) * 1960-10-12 1961-10-31 Johnson John Algot Marine craft supporting hydrofoil having depth controlling slots
US5378524A (en) * 1991-05-28 1995-01-03 Blood; Charles L. Friction reducing surface and devices employing such surfaces
RU93029115A (ru) * 1993-05-26 1995-11-27 Э.В. Ольховский Крыло летательного аппарата
RU2668347C1 (ru) * 2017-07-03 2018-09-28 Виталий Валериевич Кожевин Подводное крыло

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2261558A (en) * 1939-02-28 1941-11-04 Orloff Benjamin Fluid supported vehicle and method of producing the same
US3006307A (en) * 1960-10-12 1961-10-31 Johnson John Algot Marine craft supporting hydrofoil having depth controlling slots
US5378524A (en) * 1991-05-28 1995-01-03 Blood; Charles L. Friction reducing surface and devices employing such surfaces
RU93029115A (ru) * 1993-05-26 1995-11-27 Э.В. Ольховский Крыло летательного аппарата
RU2668347C1 (ru) * 2017-07-03 2018-09-28 Виталий Валериевич Кожевин Подводное крыло

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