首页|Performance of pulsed plasma thruster at low discharge energy
Performance of pulsed plasma thruster at low discharge energy
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As the size of satellites scales down,low-power and compact propulsion systems such as the pulsed plasma thruster(PPT)are needed for stabilizing these miniature satellites in orbit.Most PPT systems are operated at 2 J or more of discharge energy.In this work,the performance of a PPT with a side-fed,tongue-flared electrode configuration operated within a lower discharge energy range of 0.5-2.5 J has been investigated.Ablation and charring of the polytetrafluoroethylene propellant surface were analyzed through field-effect scanning electron microscopy imaging and energy-dispersive X-ray spectroscopy.When the discharge energy fell below 2 J,inconsistencies occurred in the specific impulse and the thrust efficiency due to the measurement of the low mass bit.At energy ≥2 J,the performance parameters are compared with other PPT systems of similar configuration and discussed in depth.
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