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- W3213797984 abstract "The VASIMR® VX-200SS™ program has completed six years of development and testing under a NASA NextSTEP contract with the goal of demonstrating a steady-state, 100-kW engine at a Technology Readiness Level of 5. In July 2021, the VX-200SS™ operated at 80 kW for 88 hours continuously, exceeding by fifty-fold its previously demonstrated duration at this power level. Several upgrades to the rocket core enabled this new scale of endurance, including a new endplate geometry, new antenna and ceramic window assemblies, and improved gas sealing at ceramic joints. Surface temperature and residual gas analyzer measurements affirm the merits of these design changes. In addition to the rocket core, a TRL-5 power processing unit has facilitated the success of the project by quickly recovering from transients on the power circuit of the ion heating stage. Thrust measurements were consistent within ±10% throughout the 88-hour test, with no long-term trends. The VX-200SS™ ion heating stage is presently being modified to enable steady state operation at 100 kW in late 2021." @default.
- W3213797984 created "2021-11-22" @default.
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- W3213797984 date "2021-11-03" @default.
- W3213797984 modified "2023-09-27" @default.
- W3213797984 title "Steady-state Testing in the VASIMR® VX-200SS Project" @default.
- W3213797984 cites W2099848038 @default.
- W3213797984 doi "https://doi.org/10.2514/6.2021-4150" @default.
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