ES3063767A1 - Pala estriada - Google Patents

Pala estriada

Info

Publication number
ES3063767A1
ES3063767A1 ES202430726A ES202430726A ES3063767A1 ES 3063767 A1 ES3063767 A1 ES 3063767A1 ES 202430726 A ES202430726 A ES 202430726A ES 202430726 A ES202430726 A ES 202430726A ES 3063767 A1 ES3063767 A1 ES 3063767A1
Authority
ES
Spain
Prior art keywords
striations
hub
approach
leading edge
area closer
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.)
Pending
Application number
ES202430726A
Other languages
English (en)
Inventor
Villarreal David Jesús Yáñez
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 ES202430726A priority Critical patent/ES3063767A1/es
Publication of ES3063767A1 publication Critical patent/ES3063767A1/es
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • F03D1/0641—Rotors characterised by their aerodynamic shape of the blades of the section profile of the blades, i.e. aerofoil profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/18—Aerodynamic features
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/10—Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/467—Aerodynamic features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • F03D1/0649—Rotors characterised by their aerodynamic shape of the blades of the blade surfaces, e.g. roughened
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • F03D1/06495—Aerodynamic elements attached to or formed with the blade, e.g. flaps, vortex generators or noise reducers
    • 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
    • F15D1/002—Influencing flow of fluids by influencing the boundary layer
    • F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
    • F15D1/003—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions
    • F15D1/0035—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions in the form of riblets
    • 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
    • F15D1/002—Influencing flow of fluids by influencing the boundary layer
    • F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
    • F15D1/003—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions
    • F15D1/0035—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions in the form of riblets
    • F15D1/004—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions in the form of riblets oriented essentially parallel to the direction of flow

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Control Of Turbines (AREA)

Abstract

Pala de hélice o turbina en cuyo extradós 7 se conforman un conjunto de acanaladuras, rebajes o estrías 9 cuyas trayectorias son aproximadamente o totalmente paralelas entre ellas y transcurren desde una zona más cercana al borde de ataque 4 hasta una zona más cercana al borde de salida 5. Dichas trayectorias se van alejando del eje de giro o buje 3 a medida que se aproximan el borde de ataque 4 y, análogamente, a medida que se aproximan al borde de salida 5, su distancia respecto del buje 3 se va reduciendo. La introducción de estas estrías 9 mejora el rendimiento de la pala al incrementar el ratio resultante de dividir el coeficiente de sustentación entre el coeficiente de arrastre además de mitigar la entrada en pérdida al retrasar el desprendimiento de la capa límite.
ES202430726A 2024-09-13 2024-09-13 Pala estriada Pending ES3063767A1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES202430726A ES3063767A1 (es) 2024-09-13 2024-09-13 Pala estriada

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES202430726A ES3063767A1 (es) 2024-09-13 2024-09-13 Pala estriada

Publications (1)

Publication Number Publication Date
ES3063767A1 true ES3063767A1 (es) 2026-04-20

Family

ID=99477224

Family Applications (1)

Application Number Title Priority Date Filing Date
ES202430726A Pending ES3063767A1 (es) 2024-09-13 2024-09-13 Pala estriada

Country Status (1)

Country Link
ES (1) ES3063767A1 (es)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8460779B2 (en) * 2011-03-30 2013-06-11 General Electric Company Microstructures for reducing noise of a fluid dynamic structure
US9945352B2 (en) * 2012-07-25 2018-04-17 Lm Wp Patent Holding A/S Wind turbine blade having a shaped stall fence or flow diverter
US20190202547A1 (en) * 2016-06-20 2019-07-04 3M Innovative Properties Company Aerodynamic articles and methods thereof
US10422363B2 (en) * 2013-08-22 2019-09-24 Airbus Defence and Space GmbH Structural component with a riblet surface
US20240102389A1 (en) * 2021-02-05 2024-03-28 Nikon Corporation Blade member and structural member

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8460779B2 (en) * 2011-03-30 2013-06-11 General Electric Company Microstructures for reducing noise of a fluid dynamic structure
US9945352B2 (en) * 2012-07-25 2018-04-17 Lm Wp Patent Holding A/S Wind turbine blade having a shaped stall fence or flow diverter
US10422363B2 (en) * 2013-08-22 2019-09-24 Airbus Defence and Space GmbH Structural component with a riblet surface
US20190202547A1 (en) * 2016-06-20 2019-07-04 3M Innovative Properties Company Aerodynamic articles and methods thereof
US20240102389A1 (en) * 2021-02-05 2024-03-28 Nikon Corporation Blade member and structural member

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
García Mayoral, Ricardo (2011). The interaction of riblets with wall-bounded turbulence = La interacción de los microsurcos con la turbulencia de pared. Tesis (Doctoral). todo el documento. *

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