Computations of the Shock Waves at Hypersonic Velocities Taken into Account the Chemical Reactions that Appear in the Air at High Temperatures
| Autor: | Mihai Leonida NICULESCU, Marius Gabriel COJOCARU, Mihai Victor PRICOP, Dumitru PEPELEA |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | INCAS Bulletin, Vol 7, Iss 3, Pp 129-133 (2015) |
| Druh dokumentu: | article |
| ISSN: | 2066-8201 2247-4528 |
| DOI: | 10.13111/2066-8201.2015.7.3.12 |
| Popis: | The temperature in the nose region of a hypersonic vehicle can be extremely high, for example, reaching approximately 11 000 K at a Mach number of 36 (Apollo reentry). The bow shock wave is normal, or nearly normal, in the nose region of a blunt body, and the gas temperature behind this shock wave can be enormous at hypersonic speeds. In this case, the assumption of a calorically perfect nonreacting gas with the ratio of specific heats of 1.4 gives an unrealistically high value of temperature. Therefore, the proper inclusion of chemically reacting effects is vital to the calculation of an accurate normal shock wave temperature. |
| Databáze: | Directory of Open Access Journals |
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