Micro-Propulsion Concepts Utilizing Microplasma Generators

摘要: A small-scale microplasma source is being built to function as a space propulsion device. An overview of sources presented followed by current research in thrusters. simple analysis the different acceleration mechanisms (electrothermal, electrostatic, and electromagnetic) performed based on design microwave microstrip thruster. Performance calculations, where possible, practical considerations suggest that electrothermal simplest method for thrusters, but electromagnetic may provide best performance. Electrostatic deemed infeasible due higher complexity limited performance gains compared electrothermal. grids also have potential difficulties breakdown charge exchange operating pressure sources. I. Introduction HE miniaturization electronics technology has driven similar changes satellite design. The interest mini, micro, nanosats grown last decade. CubeSat, originally university teaching tool, caught both industry government. Over 75 CubeSats been placed orbit date. major drawback these miniature satellites power available. These limitations typically result single purpose, short duration missions either lack or propulsion. can be solved with deployable solar panels which are currently under development. 1 second issue, propulsion, more difficult wider range solutions. There variety micro systems ranging from hydrazine 2 solid rockets, 3 electric 4–7 This work investigates possibilities use microplasmas. date shown good low powers (~1 mN at 5 W). paper presents an sources/generators, schemes applied thruster (3MT). Section II some typical plasma properties. III discusses present state development provides brief comparison thrusters other systems. IV theoretical benefits drawbacks various coupled proposed 3MT.