High Power Electric Propulsion (HPEP)

Completed NASA Game Changing Development project led by Johnson Space Center that advanced the XR-100 100-kW-class nested Hall thruster system. The system combined the X3 Nested Hall Thruster, a modular power-processing unit, and a five-valve mass-flow controller; its campaign demonstrated steady-state thermal performance at 73.5 kW, the highest published power for the effort, while identifying design improvements needed for a full 100-kW test.