SEPTOP is a more precise version of VARITOP in that it offers the user
a much more accurate simulation of a "real" electric propulsion thruster.
It shares much with VARITOP including solutions techniques and the robustness
of problems it can solve. It generally is used after a preliminary solution
is in hand from VARITOP. The performance estimates SEPTOP generates are
much more accurate.
SEPTOP is a product of the Jet Propulsion Laboratory (JPL) and is only available to employees of NASA centers. Non-NASA personnel should contact JPL directly for SEPTOP.
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