Analysis of chamber simulations of long probes in high-speed, dense plasmas

Brian E. Gilchrist, Sven G. Bilen, Alec D. Gallimore

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

We describe chamber tests of simulated electrodynamic tethers (EDTs) of different geometries operating in a dense, high-speed plasma. The geometries tested and described here were cylindrical and flat-ribbon. Several important conclusions that can be drawn from the tests are as follows: the currents collected by cylinder are close to what would be predicted via orbital-motion-limited (OML) current collection theory. The tape tether had comparable current levels to a theoretical equal area OML cylinder collector. However, I-V behavior clearly is different at nearest distances (~ 16 Ad tape width) as compared to furthest test distances (~ 6 \D tape width). The tape tether did better than a theoretical equal mass solid cylinder. A knee in the I-V curves can be seen in the tape data at a potential that is near the estimated Below this knee the current increases rapidly as voltage is increased. Above the knee the current increases at a rate near that expected from OML current-collection models depending on the relative width. This likely is an example of high-speed plasma flow effect. Perpendicular tape orientation performed slightly better than parallel.

Original languageEnglish (US)
StatePublished - Dec 1 2001
Event39th Aerospace Sciences Meeting and Exhibit 2001 - Reno, NV, United States
Duration: Jan 8 2001Jan 11 2001

Other

Other39th Aerospace Sciences Meeting and Exhibit 2001
CountryUnited States
CityReno, NV
Period1/8/011/11/01

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

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    Gilchrist, B. E., Bilen, S. G., & Gallimore, A. D. (2001). Analysis of chamber simulations of long probes in high-speed, dense plasmas. Paper presented at 39th Aerospace Sciences Meeting and Exhibit 2001, Reno, NV, United States.