NONEQUILIBRIUM PHENOMENA IN ROCKET NOZZLES
Abstract
Theoretical calculations of the vibrational relaxation times for hydrogen, as well as the time variation of the atomic species due to passage of a centered expansion wave into the equilibrium dissociated gas in a large concentration of diluent, have been made. These permit accurate interpretation of the kinetics experiments. The chemical kinetics shock tube has been fully instrumented to measure shock velocity, static pressure, atom or molecule concentrations by vacuum uv spectroscopy, and cylindrical diaphragm bursting time. Preliminary pressure histories at the end wall of the shock tube, due to passage of an expansion wave, have been obtained. Techniques for fabricating rapid response atom concentration probes with good chemical definition of the catalytic surfaces have been developed. The theory of the flow about these probes in the calibrating, slow flow of a glow discharge tube has been completed. This permits accurate calibration of the catalytic efficiency of the probe surfaces. A brief review of the status of high temperature gas transport properties, as well as a theoretical analysis that suggests a new technique for obtaining diffusion coefficients, are presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1961
- Accession Number
- AD0264865
Entities
People
- R.a. Hartunian
Organizations
- The Aerospace Corporation