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Instantaneous flow measurements in a supersonic wind tunnel using spectrally resolved rayleigh scattering
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Buggele, Alvin E. Seasholtz, Richard G. Reeder, Mark F. |
| Copyright Year | 1995 |
| Description | Results of a feasibility study to apply laser Rayleigh scattering to non-intrusively measure flow properties in a small supersonic wind tunnel are presented. The technique uses an injection seeded, frequency doubled Nd:YAG laser tuned to an absorption band of iodine. The molecular Rayleigh scattered light is filtered with an iodine cell to block light at the laser frequency. The Doppler-shifted Rayleigh scattered light that passes through the iodine cell is analyzed with a planar mirror Fabry-Perot interferometer used in a static imaging mode. An intensified CCD camera is used to record the images. The images are analyzed at several subregions, where the flow velocity is determined. Each image is obtained with a single laser pulse, giving instantaneous measurements. |
| File Size | 4527003 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960002344 |
| Archival Resource Key | ark:/13960/t3907285w |
| Language | English |
| Publisher Date | 1995-09-01 |
| Access Restriction | Open |
| Subject Keyword | Laser Outputs Rayleigh Scattering Light Scattering Supersonic Wind Tunnels Flow Measurement Yag Lasers Imaging Techniques Flow Characteristics Flow Velocity Absorption Spectra Doppler Effect Fabry-perot Interferometers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
