NASA NTRS · 19730000243
Laser system detects tower deflections
Abstract
Continuously measure and record deflection of facility during testing. Facility deflections are then subtracted from shroud deflections during data reduction on computer. System is based on tracking light beam by using two-axis photo detector and feeding signals into X and Y servo system.
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Fabik, R. H.. 1973-11-01. Laser system detects tower deflections. https://ntrs.nasa.gov/citations/19730000243
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