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US 8,137,066 B2Granted
Pressure based load measurement
AssigneeFrontier Wind, LLC
InventorEdward A. Mayda
Life of this patent
Estimating the term…
Abstract
A system and method for a pressure based load measurement system are provided. The system includes two pressure orifices arranged on a top surface and a bottom surface of an airfoil. The pressure differential between these two points is determined and an estimate of the aerodynamic load generated by the airfoil is determined from a linear correlation between pressure differential and load. The location of the orifices may be optimized using analytical or experimental techniques and a least squares empirical curve fit may be used to fit the data collected.
Claims21
A method comprising:
- determining a pressure differential between a first pressure location and a second pressure location on an airfoil;
- and
- based only on the determined pressure differential between the first pressure location and the second pressure location, determining an aerodynamic lift force associated with the airfoil.
A method, comprising:
- determining a first pressure sensing location on an airfoil;
- determining a second pressure sensing location on the airfoil;
- determining a difference in pressure between the first pressure sensing location and the second pressure sensing location;
- and
- based only on the determined difference in pressure between the first pressure sensing location and the second pressure sensing location, determining a force acting normal to a chord line of the airfoil.
2 more elements
A wind turbine, comprising:
- a foundation;
- a hub connected to the foundation;
- and
- a plurality of wind turbine blades connected to and arranged about the hub, wherein at least one wind turbine blade includes a first pressure sensing orifice arranged on a top surface of the at least one wind turbine blade and a second pressure sensing orifice arranged on a bottom surface of the at least one wind turbine blade, the first pressure sensing orifice and second pressure sensing orifice being configured to enable determination of an aerodynamic load generated by the at least one blade based only on a difference in pressure between the first pressure sensing location and the second pressure sensing location.
1 more element
Dependencies are inferred from the claim text.