Experimental study of ATON stationary plasma thrusters

Results from experimental studies of integral characteristics of laboratory models of second-generation ATON stationary plasma thrusters are presented. Special attention is paid to high-voltage modes with a sufficiently high specific anode propulsive burn. Integral parameters of the thrusters were measured using a test bench with diffusion evacuation at the Moscow State Institute of Radioengineering, Electronics, and Automation and that with cryogenic evacuation at the Fakel Experimental and Design Bureau. The values of the thrust, specific propulsive burn, and efficiency measured in these test benches in the main operating mode coincide to within measurement errors. At a discharge power of 2 kW and voltage of about 700 V, the specific anode propulsive burn and anode thrust efficiency reach 3000 s and 60%, respectively. The experimental data show that the efficiency of the ATON stationary plasma thruster operating in a high-voltage mode is higher than that of other similar thrusters.