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Electronic Resource
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Publication
SAND Report: SAND81-8187, December 1981.
Collection
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Library's review
ABSTRACT:
The design of the McDonnell Douglas Astronautics Company - Huntington Beach (MDAC-HB) Second Generation Heliostat (Figure A) employs a harmonic drive which provides rotational capability around the heliostat vertical centerline (azimuth). The harmonic drive operational torque capability
The design of the McDonnell Douglas Astronautics Company - Huntington Beach (MDAC-HB) Second Generation Heliostat (Figure A) employs a harmonic drive which provides rotational capability around the heliostat vertical centerline (azimuth). The harmonic drive operational torque capability
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was increased from 100,000 in-lbs to 144,000 in-lbs (corresponds to 50 mph winds in worst orientation). An accelerated life test was conducted to demonstrate suitable performance over a simulated 30 year life. The increased torque capability was to be demonstrated before and after life cycling. Life testing was intended to demonstrate suitability of the other azimuth drive components, in particular the motor, pinion gear, helicon gear, wire race bearing and seals . Show Less