Investigation of working processes in rocket micropropulsion system

Аuthors

Yakutin A. V.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

Abstract

Mathematical description of working processes in chemical monopropellant rocket micropropulsion system is proposed. Processes of catalytic and thermal decomposition of hydrazine, hydro and gas-dynamic processes of fluid flow in distribution block, catalytic reactor and nozzle, process of heat exchange in thruster chamber with heat extraction in the wall are described. Numerical analyze of working processes and estimate thrust and specific impulse microthruster’s are performed. Results of investigation of dependence fluid temperatures in catalytic reactor on wall temperatures are shown. Proposed method of numerical investigation of working processes in rocket micropropulsion system allows reducing time and cost of micropropulsion development.

Keywords:

micropropulsion system; nanosatellite; mathematical modeling; catalytic reactor; micronozzle; hydrazine decomposition

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