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Low-current, xenon orificed hollow cathode performance for in-space applications
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Domonkos, Matthew T. Gallimore, Alec D. Patterson, Michael J. |
| Copyright Year | 2002 |
| Description | An experimental investigation of the operating characteristics of 3.2-mm diameter orificed hollow cathodes was conducted to examine low current and low flow rate operation. Cathode power was minimized with an orifice aspect ratio of approximately one and the use of an enclosed keeper. Cathode flow rate requirements were proportional to orifice diameter and the inverse of the orifice length. The minimum power consumption in diode mode was 10-W, and the minimum mass flow rate required for spot-mode emission was approximately 0.08-mg/s. Cathode temperature profiles were obtained using an imaging radiometer and conduction was found to be the dominant heat transfer mechanism from the cathode tube. Orifice plate temperatures were found to be weakly dependent upon the flow rate and strongly dependent upon the current. |
| File Size | 1355671 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20020063424 |
| Archival Resource Key | ark:/13960/t5jb13v5t |
| Language | English |
| Publisher Date | 2002-07-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Radiometers Energy Consumption Low Currents Hollow Cathodes Xenon Temperature Profiles Diodes Hall Accelerators Hall Thrusters Mass Flow Rate Orifices Ion Propulsion Flow Velocity Ion Engines Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
