10 kW Hall thruster. The Advanced Space Transportation Program (ASTP) sponsorship of high-power Hall thruster development began in 1997 with the award of a 10 kW Hall thruster contract to TRW, Space Power Inc. and the Keldysh Research Center. Under this contract, the T-220 Hall thruster was delivered to NASA GRC and a performance investigation was conducted in 1998.2 The program concluded in FY00 following a 1000 hour erosion characterization.