NASA NTRS · 19750057556
A low cost LST pointing control system
Abstract
Vigorous efforts to reduce costs, coupled with changes in LST guidelines, took place in the Fall of 1974. These events made a new design of the LST and its Pointing and Attitude Control System possible. The major design changes are summarized as: an annular Support Systems Module; removal of image motion compensation; reaction wheels instead of CMG's; a magnetic torquer system to also perform the emergency and backup functions, eliminating the previously required mass expulsion system. Preliminary analysis indicates the Low Cost LST concept can meet the newly defined requirements and results in a significantly reduced development cost.
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Glaese, J. R., Kennel, H. F., Nurre, G. S., Seltzer, S. M., Shelton, H. L.. 1975-08-01. A low cost LST pointing control system. https://ntrs.nasa.gov/citations/19750057556
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