Resistive contact sensors for large blade and airfoil pressure and flow separation measurements
US7845236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2008 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Nov 22, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid dynamic polymer-based contact sensor measures ambient pressure based on the resistivity changes across the sensor under different ambient pressures. The pressure sensor may applied to airfoil structures such as wind turbine blades without impacting the blade structure and fluid dynamic characteristics. The sensor may also be applied to fluid measurements. The pressure measurements are used to measure blade performance with high fidelity. The pressure measurements are transmitted to processing to determine blade characteristics and environment including flow separation, stagnation point, angle of attack, lift and drag and wind speed. Further processing of the pressure distribution may identify wind shear, up-flow and yaw error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.