Low Power HET Flight Demonstration and Plasma Experiments on a Microsatellite

Active plasma experiments in space involve artificial generation of a plasma and observation of its interaction with the spacecraft and with the environment, making possible to investigate plasma regimes that cannot be maintained in ground facilities. Production of an “artificial magnetosphere” is presently considered as a viable way to generate a whole range of artificial plasma phenomena in space: a magnetized plasma bubble is generated around a spacecraft, providing the opportunity of studying the nonlinear interaction of two magnetized streaming plasmas (the artificial and the ionospheric) in a controlled setting and in the absence of external conductors that, in the laboratory, would destroy their dynamics. This paper presents the preliminary design of a small satellite mission for active magnetic plasma experiments (SPES - Space Plasma Experiment Satellite) compatible with the constraints of an Ariane 5 or Soyuz auxiliary payload (ASAP platforms). The mission profile allows the spacecraft to spend most of its life into the Van Allen belts, providing for detailed mapping of the radiation effects on the onboard electronics and solar cells. The mission results also in substantial flight test for Alta’s low power Hall effect thruster, specifically designed for next generation’s small satellite buses.