Simultaneous pressure and deformation field measurement on helicopter rotor blades using a grid-pattern pressure-sensitive paint system
| Autor: | Lei Liang, Zhe Dong, Lingrui Jiao, Yingzheng Liu, Weiguo Zhang, Di Peng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Stereo cameras Rotor (electric) Applied Mathematics Acoustics 020208 electrical & electronic engineering 010401 analytical chemistry Pressure-sensitive paint 02 engineering and technology Deformation (meteorology) Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention Pressure measurement law 0202 electrical engineering electronic engineering information engineering Pitch angle Electrical and Electronic Engineering Helicopter rotor Instrumentation Surface reconstruction |
| Zdroj: | Measurement. 152:107359 |
| ISSN: | 0263-2241 |
| Popis: | A grid-pattern pressure-sensitive paint (grid PSP) system is developed and then integrated with a stereo vision system to achieve simultaneous pressure and deformation measurements on rotating surfaces. The grid PSP features a dot pattern, which is prepared by spraying PSP dots on top of a polymer-ceramic binder. A single-shot lifetime method is adopted to obtain the transient pressure field on a rotor blade coated with PSP. Meanwhile, the PSP dots provide feature points for blade surface reconstruction through stereo cameras. A data processing algorithm is developed for calculating the blade motion angles based on the registration targets. This system was applied on a helicopter model test stand to capture a sequence of images on the rotating blade surface. The results from grid PSP were compared with regular PSP to evaluate the performance of pressure measurement. The accuracy of blade motion measurement was also evaluated for pitch angle from 15° to +15°, flap angle from −10° to +10° and lag angle from −10° to +10°, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect