Optimal Design And Experiment Of100mN Hall Effect Thrusters

By analyzing the design elements of the ATON type Hall Effect Thruster (HET),we obtain sequence three important design elements, namely, the propellant density, thegeometric configuration (the channel width, the length of the discharge channel, theratio of width to radius), the magnetic field strength and shape. Then, on the conditionof the above three elements, we have designed and fabricated a100mN ATON HallEffect Thruster, which on the basis of the summary of the general testing process of theHall Effect Thruster performance parameters, is tested to achieve the desired results.Firstly, in order to draw the range of the propellant density for the ATON HallEffect Thruster, this paper measures the different mass flows of the HET-P70for thesecond generation ATON Hall Effect Thruster about the discharge current, anodespecific impulse, the anode efficiency, the electron temperature distribution andionization rate distribution along the channel axial, the ceramic temperature of outerchannel wall and other parameters. Then, in order to analyze the temperaturedistribution of the Hall Effect Thruster, by virtue of ANSYS software, this paper havesimulated the temperature distribution of the HET-P70under the different mass flows,comparing with the measurement results of the outer channel ceramic wall. Finally, thispaper obtains the upper and lower limits of the propellant density.Secondly, in order to get the range of the channel width for the ATON Hall EffectThruster, this paper analyzes the limiting factors of the lower limit and upper limit ofthe discharge channel width: the lower limit of channel width have a significant effecton the electron ceramic wall collision energy loss of power and the electron temperaturedistribution, and upper limit of the channel width has an important role in the magneticstrength at the channel centerline and magnetic mirror ratio. Finally, this paper obtainsthe upper limit and lower limit of the channel width.Thirdly, in order to get the geometric configuration for the100mN ATON HallEffect Thruster: the channel radius, the channel width, the ratio of width to radius. Inthis paper, on the basis of the analysis of annular effect comparing the HET-P70withthe HET-100, we obtain the range of the ratio of width to radius. Then, combining thefirst generation of SPT with the second generation ATON Hall Effect Thruster, thispaper analyses the magnetic saturation, magnetic lenses and zero magnetic field on theperformances for the thruster. Finally, this paper obtains the geometric dimensions ofthe100mN xenon ATON Hall Effect Thruster: the channel radius, the channel width,the ratio of width to radius.Finally, in order to test and verify the performance parameters of the100mNxenon ATON Hall Effect Thruster, this paper summarizes the testing process of HallEffect Thruster: the craftsmanship testing process and the experiment testing process. On this basis, this paper tests the performance parameters of the100mN Hall EffectThruster experiment prototype, which achieves the desired results.