Detonation Initiation of Strong Shock Waves in Order to Study the Radiation Characteristics of High-Temperature Gasesстатья
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Дата последнего поиска статьи во внешних источниках: 4 марта 2022 г.
Аннотация:The description of the modernized DDST-M double-diaphragm shock tube with detonation initiationof strong shock waves (SWs) is given for conditions simulating the entry of spacecraft (SC) into the Earth’s atmosphere at the second cosmic velocity. The result is achieved by optimizing the combustion process of the hydrogen-oxygen mixture in the high-pressure chamber by installing a special perforated disk at the end wall of the chamber. Injection of hot gas jets through the disk openings ensures the rapid formation of a turbulent flame and a leading SW, the reflection of which from the diaphragm provides gas combustion in the energetically efficient Chapman–Jouguet detonation mode. The radiation intensities of shock-heated air in the ultraviolet and visible spectral regions are measured at a SW velocity of 11.4 km/s and an initial gas pressure ahead of the SW of 33.25 Pa.