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PERFORMANCE EVALUATION OF A TWO-DIMENSIONAL ION ROCKET USING THROUGH-FEED AND POROUS TUNGSTEN IONIZERS

Technical Report ·
OSTI ID:4021117
An ion rocket producing a nearly two-dimensional ion beam was operated with two ionizers. Each ionizer is examined, and a comparison is made between the respective performances. Data show that the porous tungsten ionizer is superior to the through-feed ionizer. Accelerator and power efficiencies to 98 and 53%,.respectively, were obtained with this ion rocket at currert densities to 89 amp/ sq m. The power efficiency was obtained at a specific impulse of 12,300 seca Preliminary data are presented which show the effect of electron addition on ion-beam divergence. A direct comparison is ncade between metered data and independent hot-wire calorimeter data. (auth)
Research Organization:
National Aeronautics and Space Administration. Lewis Research Center, Cleveland
NSA Number:
NSA-15-016774
OSTI ID:
4021117
Report Number(s):
NASA-TN-D-766
Country of Publication:
United States
Language:
English

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