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Theoretical and experimental studies of reentry plasmas
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kang, S. Dunn, M. G. |
| Copyright Year | 1973 |
| Description | A viscous shock-layer analysis was developed and used to calculate nonequilibrium-flow species distributions in the plasma layer of the RAM vehicle. The theoretical electron-density results obtained are in good agreement with those measured in flight. A circular-aperture flush-mounted antenna was used to obtain a comparison between theoretical and experimental antenna admittance in the presence of ionized boundary layers of low collision frequency. The electron-temperature and electron-density distributions in the boundary layer were independently measured. The antenna admittance was measured using a four-probe microwave reflectometer and these measured values were found to be in good agreement with those predicted. Measurements were also performed with another type of circular-aperture antenna and good agreement was obtained between the calculations and the experimental results. A theoretical analysis has been completed which permits calculation of the nonequilibrium, viscous shock-layer flow field for a sphere-cone body. Results are presented for two different bodies at several different altitudes illustrating the influences of bluntness and chemical nonequilibrium on several gas dynamic parameters of interest. Plane-wave transmission coefficients were calculated for an approximate space-shuttle body using a typical trajectory. |
| File Size | 5638139 |
| Page Count | 115 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730013358 |
| Archival Resource Key | ark:/13960/t06x4451v |
| Language | English |
| Publisher Date | 1973-04-01 |
| Access Restriction | Open |
| Subject Keyword | Electron Density Concentration Reentry Physics Space Shuttles Blackout Propagation Flow Characteristics Spacecraft Antennas Plasma Dynamics Viscous Flow Boundary Layer Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
