Application of an interference free method for the measurement of velocities in supersonic flows
Abstract
This method is based on focusing a high power laser beam to a point in the flow which becomes ionized and forms a visible spark. This spark moves with the free stream and is traced by one or more image converter cameras. The method provides a practical solution to the instrumentation problem but is rather costly. Accuracies obtained are about 4% against about 2% for conventional instrumentation.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1974
- Bibcode:
- 1974STIN...7514118R
- Keywords:
-
- Ruby Lasers;
- Supersonic Flow;
- Velocity Measurement;
- Electric Sparks;
- Flow Distortion;
- Gas Ionization;
- High Speed Cameras;
- Image Converters;
- Laser Outputs;
- Pulsed Lasers;
- Shock Wave Propagation;
- Lasers and Masers