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International space station cathode life testing status
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Soulas, George C. Sarver-Verhey, Timothy R. |
| Copyright Year | 1998 |
| Description | To demonstrate adequate lifetime and performance capabilities of a hollow cathode for use on the International Space Station (ISS) plasma contactor system, life tests of multiple hollow cathode assemblies (HCAs) were initiated at operating conditions simulating on-orbit operation. Three HCAs are presently being tested. These HCAs are operated with a continuous 6 sccm xenon flow rate and 3 A anode current. Emission current requirements are simulated with a square waveform consisting of 50 minutes at a 2.5 A emission current and 40 minutes with no emission current. As of July 1998, these HCAs have accumulated between 1 1,700 and 14,200 hours. While there have been changes in operatin, behavior the three HCAs continue to operate stably within ISS specifications and are expected to demonstrate the required lifetime. |
| File Size | 690956 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19990008656 |
| Archival Resource Key | ark:/13960/t56f0sg66 |
| Language | English |
| Publisher Date | 1998-10-01 |
| Access Restriction | Open |
| Subject Keyword | Plasma Physics Hollow Cathodes International Space Station Simulation Plasmas Physics Continuum Flow Xenon Waveforms Flow Velocity Anodes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
