Loading...
Please wait, while we are loading the content...
Similar Documents
A 2000-hour durability test of a 5-centimeter diameter mercury bombardment ion thruster
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Finke, R. G. Nakanishi, S. |
| Copyright Year | 1972 |
| Description | A 2000-hour durability test of a modified Hughes SIT-5 (Structurally Integrated Thruster, 5 cm) was conducted at the Lewis Research Center. The thruster operated with a translating screen thrust vector grid locked in position for 10 deg beam deflection. The test was essentially continuous except for seven stoppages of beam current. The neutralizer keeper voltage and thruster floating potential increased slightly with time. Performance profiles and maps of thruster characteristics were obtained at 453 and 2023 hours into the test. Overall efficiency was nearly constant at 31 - 32 percent, and operating characteristics were similar at both points in the test. A post-shutdown inspection showed negligible erosion damage to the accelerator and cathode baffle. Some erosion was found in the aperture of the neutralizer cathode. |
| File Size | 10410665 |
| Page Count | 55 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730003075 |
| Archival Resource Key | ark:/13960/t0jt4f11v |
| Language | English |
| Publisher Date | 1972-10-01 |
| Access Restriction | Open |
| Subject Keyword | Propulsion Systems Durability Ion Engines Performance Tests Engine Tests Mercury Metal Erosion 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 |
