Publication Date:
2019-07-13
Description:
The accurate prediction of thruster life requires time-dependent erosion estimates for the ion optics assembly. Such information is critical to end-of-life mechanisms such as electron backstreaming. CEX2D was recently modified to handle time-dependent erosion, double ions, and multiple throttle conditions in a single run. The modified code is called "CEX2D-t". Comparisons of CEX2D-t results with LDT and ELT post-tests results show good agreement for both screen and accel grid erosion including important erosion features such as chamfering of the downstream end of the accel grid and reduced rate of accel grid aperture enlargement with time.
Keywords:
Optics; Computer Programming and Software; Numerical Analysis; Spacecraft Propulsion and Power
Type:
AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit; Jul 21, 2008 - Jul 23, 2008; Hartford, CT; United States
Format:
text
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