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Experimental investigation of a 2.5 centimeter diameter kaufman microthruster
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Cohen, A. J. |
| Copyright Year | 1973 |
| Description | A 2.5-centimeter-diameter Kaufman electron bombardment microthruster was fabricated and tested. The microthruster design was based on the 15-centimeter-diameter SERT 2 and 5-centimeter-diameter Lewis experimental thruster designs. The microthruster with a two-grid system, operating at a net accelerating potential of 600 volts and an accelerator potential of 500 volts, produced a calculated 445 micronewton thrust when it was run with a 9-milliampere beam current. A glass grid was initially used in testing. Later a two-grid system was successfully incorporated. Both the propellant utilization efficiency and the total power efficiency were lower than for large-size advanced thrusters, as expected; but they were sufficiently high that 2.5-centimeter thrusters show promise for future space applications. Total power of the microthruster with an assumed 7-watt hollow-cathode neutralizer was less than 30 watts at a thrust level of 445 micronewton (100 Nu LBf). The hollow cathode was operated at zero tip heater power for power requirement tests. |
| File Size | 1983782 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730008047 |
| Archival Resource Key | ark:/13960/t3712tq5n |
| Language | English |
| Publisher Date | 1973-02-01 |
| Access Restriction | Open |
| Subject Keyword | Propulsion Systems Performance Tests Electric Rocket Engines Sert 2 Spacecraft Electron Bombardment Microthrust Cathodes 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 |
