Advanced Composite Material Study for Millimeter Wavelength Antennas. Volume II. Environmental Tests.
Abstract
The purpose of this program was to conduct a theoretical and experimental exploratory development program to establish the required technology to design, fabricate, and test reliable flightworthy advanced composite, extremely high frequency (ehf) ANTENNAS FOR SPACE SYSTEMS APPLICATIONS. The environmental tests conducted as part of this program are reported. Laminate of graphite/epoxy 75S/ERLB 4617 material was selected for the millimeter wavelength antenna. The selected material was fabricated into test specimens which were exposed to vacuum, UV and gamma radiation. After exposure the specimens were subjected to temperature cycling, thermal coefficient of expansion and microwave reflectivity tests. No degradation was noted as a result of these tests. No significant changes were detected as a result of the environmental exposure. It was concluded, as a result of these limited tests, that the selected materials were excellent candidates for a millimeter wavelength space antenna. (Author, modified-PL)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1971
- Accession Number
- AD0893358
Entities
People
- C. E. Welling
- James W. Haylett
- R. E. Whitacre
Organizations
- Goodyear Aerospace