R. E. Freeland
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View article: Inflatable Space Structures Technology Development For Large Radar Antennas
Inflatable Space Structures Technology Development For Large Radar Antennas Open
There has been recent interest in inflatable space-structures technology for possible applications on U.S. Department of Defense (DOD) missions because of the technology's potential for high mechanical-packaging efficiency, variable stowed…
View article: Spaceborne Microwave Instrument for High Resolution Remote Sensing of the Earth's Surface Using a Large-Aperture Mesh Antenna
Spaceborne Microwave Instrument for High Resolution Remote Sensing of the Earth's Surface Using a Large-Aperture Mesh Antenna Open
This report describes a two-year study of a large-aperture, lightweight, deployable mesh antenna system for radiometer and radar remote sensing of the Earth from space. The study focused specifically on an instrument to measure ocean salin…
View article: PASS Spacecraft Antenna Technology Assessment
PASS Spacecraft Antenna Technology Assessment Open
The purpose was to generate estimates of mechanical performance for the classes of spacecraft antenna under construction for application to the Personal Access Satellite System (PASS). These performance data are needed for the support of t…
View article: Lightweight composite reflector panels
Lightweight composite reflector panels Open
The Hexel Corp. has produced additional composite panels, based on JPL designs, that: (1) have increased the panel size from 0.15 to 0.40 meters, (2) have improved the as-manufactured surface precision 3.0 to approx. 1.0 micron RMS, (3) ha…
View article: System Concept For A Moderate Cost Large Deployable Reflector (LDR)
System Concept For A Moderate Cost Large Deployable Reflector (LDR) Open
A study was carried out at the Jet Propulsion Laboratory during the first quarter of 1985 to develop a system concept for NASA's Large Deployable Reflector (LDR). This new system concept meets the primary scientific requirements and minimi…