WO2024112314A1 - Procédé de déviation de flux par effet coanda inverse - Google Patents

Procédé de déviation de flux par effet coanda inverse Download PDF

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Publication number
WO2024112314A1
WO2024112314A1 PCT/UA2023/000057 UA2023000057W WO2024112314A1 WO 2024112314 A1 WO2024112314 A1 WO 2024112314A1 UA 2023000057 W UA2023000057 W UA 2023000057W WO 2024112314 A1 WO2024112314 A1 WO 2024112314A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow
coanda effect
propulsor
aerodynamic surface
reverse
Prior art date
Application number
PCT/UA2023/000057
Other languages
English (en)
Russian (ru)
Inventor
Юрий Макарович ЛИХОВИД
Original Assignee
Юрий Макарович ЛИХОВИД
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 Юрий Макарович ЛИХОВИД filed Critical Юрий Макарович ЛИХОВИД
Publication of WO2024112314A1 publication Critical patent/WO2024112314A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C15/00—Attitude, flight direction, or altitude control by jet reaction
    • B64C15/02—Attitude, flight direction, or altitude control by jet reaction the jets being propulsion jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
    • B64C21/06—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C29/00—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/10—Influencing flow of fluids around bodies of solid material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/10—Influencing flow of fluids around bodies of solid material
    • F15D1/12—Influencing flow of fluids around bodies of solid material by influencing the boundary layer

Definitions

  • the invention relates to the dynamics of fluid media, namely to the mechanism of influence on the flow of a fluid medium flowing around a body of solid material, and can be used to create lifting force in maneuverable flying vehicles and UAVs.
  • An-72 aircraft One of the main features of the An-72 aircraft is the location of the engines above the wing to use the direct effect Coanda, when the engine exhaust stream flows without separation around the surface of the wing and flap and deflects downward, providing an increase in lift and a reduction in take-off distance ["An-72 Coaler (Antonov)".
  • GlobalSecurity.org. 2011-07-09. Archived from the original on 2022-05-27. Retrieved 2022-05-27 https://www.globalsecurity.org/niilitary/world/russia/an-72.htm].
  • the disadvantages of the known method of increasing lift include the fact that the use of the direct Coanda effect does not allow the creation of aircraft with a zero take-off distance.
  • the purpose of the invention is to create a method for deflecting a flow - air or other fluid - through the use of the reverse Coanda effect.
  • This goal is achieved in that the method of flow deflection using at least one aerodynamic surface with the flow adhering to it, which is characterized by the fact that the flow over the aerodynamic surface is created by suction.
  • Fig. 1 and fig. 3 The direct Coanda effect in Fig. 1 and fig. 3 is carried out by blowing a convex aerodynamic surface 1 with a flow 2 coming from the output of the propulsion device 3, for example, from a turbofan engine (TRD), as is the case in the An-72.
  • a turbofan engine TRD
  • flow 2 sticks to the convex aerodynamic surface 1 and can deviate from its original direction by 90° without separation from surface 1.
  • flow 3 is sucked in from the external environment.
  • a turbofan engine its air collector sucks in air from all sides simultaneously, including from below, thereby reducing the pressure under the turbofan engine, which leads to a decrease in the overall lift force at the start.
  • an aerodynamic surface 5 is installed in front of the propulsion unit 3, which in the preferred case may have a corresponding curvature opposite to the curvature of the convex aerodynamic surface 1.
  • the suction of the flow 6 by the propulsion unit 3 above the aerodynamic surface 5 occurs at its trailing edge 7, as a result of which the effect of sticking of the rarefied flow 6 is observed , coming from above and in front, creating a significant pressure drop over the aerodynamic surface 5 since it plays the role of a kind of screen.
  • air is not sucked in from below, resulting in efficiency the inverse Coanda effect increases by 1.5 times compared to the direct Coanda effect, all other things being equal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention se rapporte au domaine de la dynamique des milieux en écoulement, notamment à l'action sur un flux de milieu en écoulement contournant un corps en matériau solide, et peut être utilisée afin de créer une force de sustentation pour des moyens de transport volants et des aéronefs sans pilote. L'invention concerne un procédé de déviation de flux dans lequel on place, dans la zone de l'action aspirante d'un propulseur (3), une surface aérodynamique (5) ayant une surface concave en avant du propulseur (3), et on installe à la sortie du propulseur (3) une surface de soufflage (1) en forme de surface convexe vers laquelle vient se plaquer le flux sortant du propulseur (3).
PCT/UA2023/000057 2022-11-21 2023-11-21 Procédé de déviation de flux par effet coanda inverse WO2024112314A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UAA202204362 2022-11-21
UAA202204362 2022-11-21

Publications (1)

Publication Number Publication Date
WO2024112314A1 true WO2024112314A1 (fr) 2024-05-30

Family

ID=91196497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/UA2023/000057 WO2024112314A1 (fr) 2022-11-21 2023-11-21 Procédé de déviation de flux par effet coanda inverse

Country Status (1)

Country Link
WO (1) WO2024112314A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052869A (en) * 1934-10-08 1936-09-01 Coanda Henri Device for deflecting a stream of elastic fluid projected into an elastic fluid
US2939650A (en) * 1957-02-07 1960-06-07 Sebac Nouvelle Sa Airplane wing with boundary layer control
RU2089458C1 (ru) * 1995-01-11 1997-09-10 Владимир Иванович Воронов Летательный аппарат вертикального взлета и пасадки
US20160152333A1 (en) * 2013-07-12 2016-06-02 Hutchinson Lift-generating device having axial fan(s), and heavier-than-air aircraft fitted with such a device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052869A (en) * 1934-10-08 1936-09-01 Coanda Henri Device for deflecting a stream of elastic fluid projected into an elastic fluid
US2939650A (en) * 1957-02-07 1960-06-07 Sebac Nouvelle Sa Airplane wing with boundary layer control
RU2089458C1 (ru) * 1995-01-11 1997-09-10 Владимир Иванович Воронов Летательный аппарат вертикального взлета и пасадки
US20160152333A1 (en) * 2013-07-12 2016-06-02 Hutchinson Lift-generating device having axial fan(s), and heavier-than-air aircraft fitted with such a device

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "An-72 COALER", GLOBALSECURITY, 27 May 2022 (2022-05-27), pages 1 - 5, XP093178327, Retrieved from the Internet <URL:https://web.archive.org/web/20220527052832/https://www.globalsecurity.org/military/world/russia/an-72.htm> [retrieved on 20240111] *
BLIN E V., CHETVERTYI SPOSOB, 23 February 2024 (2024-02-23), Retrieved from the Internet <URL:https://web.archive-org/web/20240223134559/https://aviaforum.ams3.digitaloceanspaces.com/data/attachment-files/2008/ii/367788_el7b9af76c45175c69d09d7alcff130c.pdf> [retrieved on 20240223] *
BLIN E.: "Aviatsiia obshchego naznacheniia", CHETVERTYI SPOSOB, 2010, pages 39 - 43 *
GIRKA IU.V ET AL.: "Matematicheskoe modelirovanie vzaimodeistviia viazkoi strui s nesushchei poverkhnostiu", AVIATSIONNO-KOSMICHESKAIA TEKHNIKA I TEKHNOLOGIIA, vol. 92, no. 5, 2012, pages 21 - 23 *
SEMINENKO A S.: "Eksperimentalnye ustanovki dlia opredeleniia uslovii realizatsii koandovskikh techenii", VESTNIK BETU IM. V. G. SHUKHOVA., 2018, pages 52 - 59 *
VORONKOV IU.S. ET AL.: "Letatelnyi apparat, ispolzuiushchii effekt Koanda", MEZHDUNARODNYI ZHURNAL PRIKLADNYKH I FUNDAMENTALNYKH ISSLEDOVANII., 2016, pages 744 - 748 *

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