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Status
Electronic Resource
Call number
Publication
1036; Report; January 1981.
Language
Library's review
ABSTRACT:
TECHNICAL MEMORANDUM A3-228-AAMO-TM81-SOLAR-2 - McDonnell Douglas Astronautics Company-Huntington Beach (MDAC-HB) has designed a second generation heliostat for solar energy programs. The heliostat is shown in Figure 1, and has approximately 616 square feet of mirror surface. The heliostat
TECHNICAL MEMORANDUM A3-228-AAMO-TM81-SOLAR-2 - McDonnell Douglas Astronautics Company-Huntington Beach (MDAC-HB) has designed a second generation heliostat for solar energy programs. The heliostat is shown in Figure 1, and has approximately 616 square feet of mirror surface. The heliostat
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uses an open-loop control system to track and reflect the sun's energy onto a central receiver. Each heliostat employs a drive unit capable of controlling rotation around the pedestal vertical centerline (azimuth) and a drive unit for control of mirror elevation. The azimuth drive is a two-stage reduction device (see Figure 2). A 1/4 horsepower electric motor drives a helicon gear set for the primary reduction stage, and the helicon gear provides the input to a harmonic drive built by United Shoe Machinery Corporation for the output stage. Show Less