variavel0=<b>José Nivaldo Hinckel</b> - hinckel@dem.inpe.br Instituto Nacional de Pesquisas Espaciais
<b>Alexander Alexandrovich Kozlov</b> - k202_k@mai.ru MAI
<b>Francisco José Vicente de Moraes</b> - vmoraes@equatorialsistemas.com.br Equatorial Sistemas Ltda
<b>Humberto Pontes Cardoso</b> - humberto@equatorialsistemas.com.br Equatorial Sistemas Ltda
<b>Abstract.</b> This paper describes the development of a 200 newton liquid bipropellant thruster for use as apogee kick motor in geostationary bound satellites or for orbital maneuvers of space platforms. Swirl injectors are used to generate a radially stratified mixture ratio, thus creating  a hot core flow in the center region and a cooler curtain flow near the chamber wall. This way, the thermal load on the chamber wall is decreased. A lower heat load on the wall allows the use of nickel steel for the construction of the chamber, instead of columbium or other high temperature alloys, which have a very high production cost and require expensive processes for machining, forming and welding.
<b>Keywords.</b> bipropellant thruster, apogee kick motor, control thruster.