Experience of High-Power Electric Propulsion at S.P. Korolev Rocket and Space Corporation «Energia»
Аuthors*, **, **
Korolev Rocket and Space Corporation «Energia», 4а, Lenin str., Korolev, Moscow region, 141070, Russia
AbstractResearch and development of high power electric propulsion at the S.P. Korolev RSC Energia have more than semi centenary history. Main steps are the development of lithium-fed magnitoplasmodynamic thrusters are presented, which resulted in the creation of large engines (500 kW) with high specific characteristics and long life. 500-hour testing of such thruster and space experiment with its model are conducted. A newly developed radiation-cooled thruster with anode layer tested at TsNIIMASH with bismuth at the power of 34 kW demonstrated specific impulse of 5200 s and efficiency of 70 %. An alternative propellant (iodine) is proposed for high power engines with closed electron drift and testing of iodine SPT has been started.
Keywords:electric propulsion; magnitoplasmodynamic thruster; thruster with closed electron drift; anode; cathode; specific impulse; efficiency