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Thermophysics and Aeromechanics

2009 year, number 3

Modelling of the flow structure in a composite jet behind two thrusters located near the spacecraft case

YU.I. Gerasimov1, V.N. Yarygin2, A.N. Krylov3, B.A. Sagdullin4
1 Korolev Rocket and Space Corporation "Energia"
2 Kutateladze Institute of Thermophysics SB RAS
3 Kutateladze Institute of Thermophysics SB RAS
4 Moscow Institute of Physics and Technology
Keywords: spacecraft, orientation and control thrusters, rocket blasts, exhaust plumes, jet interaction, flow structure, modelling in vacuum chambers
Pages: 395-404


The gasdynamic flow structure is studied experimentally and numerically in the zone of jet interaction flowing with considerable underexpansion from two supersonic nozzles located near the spacecraft case. Longitudinal and transversal distributions of the density are obtained by the method of electron beam. They are compared with calculation results for inviscid gas. Generalized dependencies for determination of gas density within the zone of two jets interaction and boundary of this zone are obtained.