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Near-field testing of the 15-meter hoop-column antenna
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schroeder, Lyle C. Belvin, W. Keith Adams, Richard R. Bailey, M. C. Campbell, Thomas G. Butler, David H. |
| Copyright Year | 1989 |
| Description | A 15-m-diameter antenna was tested to verify that dimensional tolerances for acceptable performance could be achieved and to verify structural, electromagnetic, and mechanical performance predictions. This antenna utilized the hoop column structure, a gold plated molybdenum mesh reflector, and 96 control cables to adjust the reflector conformance with a paraboloid. The dimensional conformance of the antenna structure and surface was measured with metric camera and theodolites. Near field pattern data were used to assess the electromagnetic performance at five frequencies from 2.225 to 11.6 GHz. The reflector surface was adjusted to greatly improve electromagnetic performance with a finite element model and the surface measurements. Measurement results show that antenna surface figure and adjustments and electromagnetic patterns agree well with predictions. |
| File Size | 57795984 |
| Page Count | 128 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890019179 |
| Archival Resource Key | ark:/13960/t48q0xb9m |
| Language | English |
| Publisher Date | 1989-08-01 |
| Access Restriction | Open |
| Subject Keyword | Launch Vehicles And Space Vehicles Space Erectable Structures Reflectors Tolerances Mechanics Electromagnetic Radiation Near Fields Antenna Feeds Reflection Hoop Column Antennas Photogrammetry Antenna Radiation Patterns 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 |
