Computer Science – Sound
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.471..375m&link_type=abstract
In: 15th ESA Symposium on European Rocket and Balloon Programmes and Related Research, 28 - 31 May 2001, Biarritz, France. Ed.:
Computer Science
Sound
Earth Atmosphere, Rockets
Scientific paper
An expansion of a rocket exhaust plume in the direction perpendicular to the rocket motion is studied. A comparison is made of the numerical calculations with a self-similar approximation for a strong cylindrically symmetric explosion. It is shown that if a rocket velocity, V∞, is high enough and exceeds the sum of an exhaust gas velocity, Ve and a sound velocity, Vs, (V∞ > Ve + Vs), there might be formed, for a short time, a gas-dynamic hole around a rocket flight trajectory in the upper atmosphere where the plume gas concentration is less than the ambient gas concentration at a given altitude. The density and temperature profiles of the transversal plume expansion are calculated and a possibility of acceleration of the condensed species is discussed.
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