Computer Science
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spie..444..211w&link_type=abstract
IN: Advanced technology optical telescopes II; Proceedings of the Meeting, London, England, September 5, 6, 1983 (A85-25230 10-8
Computer Science
1
Air Cooling, Mirrors, Temperature Measurement, Honeycomb Structures, Sandwich Structures, Structural Weight, Temperature Distribution, Test Facilities, Ventilation
Scientific paper
Experiments to measure thermal time constants and temperature distributions on a simulated large mirror blank under various ventilating conditions are described. The blank was a single cast square cell honeycomb sandwich-type constructed of Pyrex-Tempax glass, and measured 60 cm in diameter and 30 cm thick. The experimental set-up is described, including the blank, the ventilation system, the thermometers, the anemometer, and the computer. Ventilation was found to reduce the mirror's thermal time constant by a factor of three, the temperature within the blank by a factor of nine, and the temperature difference between the blank and the ambient air by a factor of seven. The highest ventilation flow was 21 ft/sec, with an air volume of about 7000 cu ft/min. It is concluded that, from the thermal and economical point of view, a casted light-weight Pyrex mirror appears to be an attractive candidate for the reflector of future large telescopes.
No associations
LandOfFree
Thermal measurements and control of a lightweight mirror does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal measurements and control of a lightweight mirror, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal measurements and control of a lightweight mirror will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-938359