| タイトル | Applicability of empirical data currently used in predicting solid propellant exhaust plumes |
| 著者（英） | Tevepaugh, J. A.; Smith, S. D.; Penny, M. M.; Greenwood, T.; Roberts, B. B. |
| 著者所属（英） | NASA Marshall Space Flight Center; Lockheed Missiles and Space Co.; NASA Johnson Space Center |
| 発行日 | 1977-09-01 |
| 言語 | eng |
| 内容記述 | Theoretical and experimental approaches to exhaust plume analysis are compared. A two-phase model is extended to include treatment of reacting gas chemistry, and thermodynamical modeling of the gaseous phase of the flow field is considered. The applicability of empirical data currently available to define particle drag coefficients, heat transfer coefficients, mean particle size, and particle size distributions is investigated. Experimental and analytical comparisons are presented for subscale solid rocket motors operating at three altitudes with attention to pitot total pressure and stagnation point heating rate measurements. The mathematical treatment input requirements are explained. The two-phase flow field solution adequately predicts gasdynamic properties in the inviscid portion of two-phase exhaust plumes. It is found that prediction of exhaust plume gas pressures requires an adequate model of flow field dynamics. |
| NASA分類 | SPACECRAFT PROPULSION AND POWER |
| レポートNO | 78A18272 |
| 権利 | Copyright |
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