Uncertainty in Electric Propulsion Erosion Measurements

Mackey, J ; Frieman, J ; Ahern, D ; Gilland, J

关键词: ELECTRIC PROPULSION;    EROSION;    MAGNETIC SHIELDING;    HALL THRUSTERS;    MISSION PLANNING;    SPARK MACHINING;   

RP-ID  :  GRC-E-DAA-TN70751

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Uncertainty in erosion rates as measured by different methods is discussed and quantified. The work focuses on case studies from components on the Hall Effect Rocket with Magnetic Shielding (HERMeS) Hall thruster, but the methods can be extended for many electric propulsion applications. The primary method used for evaluating erosion is non-contact profilometry of masked and exposed components. Accurate quantification of the erosion rates of components is critical to determining lifetime and is therefore critical to mission planning purposes.