Computer Science
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985lsas.rept..771b&link_type=abstract
In NASA. Langley Research Center Large Space Antenna Systems Technol., 1984, Pt. 2 p 771-774 (SEE N85-23840 14-15)
Computer Science
Deployment, Orbital Servicing, Reflectors, Space Stations, Telescopes, Large Deployable Reflector, Orbit Transfer Vehicles, Space Platforms, Space Shuttle Orbiters
Scientific paper
The Large Deployable Reflector (LDR), a NASA concept of a very large, orbiting, far infrared submillimeter telescope is described. To be launched in the 1990s, LDR has a projected life of 10 years and is to be serviced every 2 to 3 years. A System Concept and Technology Definition Study of LDR for NASA Ames is currently being conducted. Study results indicate that launch of a 20 m LDR, operating in a 700 to 800 km orbit, requires two shuttle loads. The components of LDR are assembled in a lower parking orbit, and the system is checked out and then transferred to the operational orbit. Furthermore, for servicing, LDR may have to be retrieved to the same lower orbit (and later returned to operational altitude) by an orbit transfer vehicle. These requirements bring up the question of a suitable assembly, checkout, and servicing platform. The deployment process is time consuming and may require special equipment not necessarily available from the orbiter itself. The SS is an attractive choice for that platform.
Alff W. H.
Bandermann Lothar W.
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