Application and development of the pulsed plasma thruster

The application and development of pulsed plasma thrusters(PPTs)in recent years are reviewed in this paper.The advantages of PPTs are discussed.The schematics,propulsion performance parameters and key physical processes of PPTs are described.Some representative PPT products and flight systems developed in recent years are presented to show the performance of the PPT.Studies about how electrode structures,discharge circuits,propellant materials,energy discharge method,propellant feed method,ignition method and number of thruster heads influence the PPT performance are presented and analyzed.The ignitor design method,ignition process and propellant carbonization are introduced to discuss the reliability and lifetime issues in PPTs.The modeling methods of the discharge circuit,as well as ablation,ionization and acceleration in PPTs are presented.Finally,the application of PPTs in the future is analyzed and some suggestions for PPT development are proposed.