Hypersonic Flow Diagnostic Development.
Abstract
We have developed and demonstrated in our labs two techniques which can be used for the non-intrusive sensing of air flows in a wide range of temperature and pressures. The single levels realized in the laser induced fluorescence sensing of molecular oxygen are approximately 5 to 7 times weaker than the predicted levels, due to errors in either the published absorption cross section, the published predissociation rates, or both. The reduced signal levels will increase the difficulty in system integration into the wind tunnel environment, but do not preclude it. The much greater signals realized using the Rayleigh scatter analysis of gas density have been demonstrated in our labs and have been shown to be ideal for this type of remote analysis. We have been able 7
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1992
- Accession Number
- ADA255045
Entities
People
- Anthony O’keefe