the article is published in JOURNAL OF PROPULSION AND POWER
http://arc.aiaa.org/doi/abs/10.2514/1.B36120
http://dx.doi.org/10.2514/1.B36120
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Harold White, Paul March, James Lawrence, Jerry Vera, Andre Sylvester, David Brady, and Paul Bailey. "Measurement of Impulsive Thrust from a Closed Radio-Frequency Cavity in Vacuum". ,
http://dx.doi.org/10.2514/1.B36120
Measurement of Impulsive Thrust from a Closed Radio-Frequency Cavity in Vacuum
Harold White*Paul March†James Lawrence‡Jerry Vera§Andre Sylvester¶David Brady**Paul Bailey††
NASA Johnson Space Center, Houston, Texas 77058
*Advanced Propulsion Theme Lead and Principal Investigator, Eagleworks Laboratories, EP4, 2101 NASA Parkway. Member AIAA.
†Principal Engineer, Eagleworks Laboratories, 2101 NASA Parkway, EP4. Senior Member AIAA.
‡Electrical Engineer, Eagleworks Laboratories, 2101 NASA Parkway, EP5.
§Mechanical Engineer and COMSOL Multiphysics Analyst, Eagleworks Laboratories, 2101 NASA Parkway, EP4.
¶Project Manager, Eagleworks Laboratories, 2101 NASA Parkway.
**Aerospace Engineer, Eagleworks Laboratories, 2101 NASA Parkway.
††Scientist, Eagleworks Laboratories, 2101 NASA Parkway.
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Publication Date (online): November 17, 2016
A vacuum test campaign evaluating the impulsive thrust performance of a tapered radio-frequency test article excited in the transverse magnitude 212 mode at 1937 MHz has been completed. The test campaign consisted of a forward thrust phase and reverse thrust phase at less than 8×10−6 torr8×10−6 torr vacuum with power scans at 40, 60, and 80 W. The test campaign included a null thrust test effort to identify any mundane sources of impulsive thrust; however, none were identified. Thrust data from forward, reverse, and null suggested that the system was consistently performing with a thrust-to-power ratio of 1.2±0.1 mN/kW1.2±0.1 mN/kW.