SOLAR ORIENTING DEVICE FOR EXPANDABLE FLAT-PANEL ARRAY.
Final rept. for 1 July 61-30 June 63,
GOODYEAR AEROSPACE CORP AKRON OHIO
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This report summarizes the results of two years of analytical studies and experimental testing of systems for automatically orienting various sized solar cell panels continuously to the sun. Analysis of the apparent motion of the sun, wind effects, panel orientation, sun sensing, and basic system configurations are included in the section on general studies. A section is presented on the operation, design, and fabrication of the single-and two-axis sun sensors. System circuit diagrams are included for both the singleaxis and two-axis automatic drive systems. Descriptions of the mount and drive head assemblies are included, and the general setup consideration for each system is given. Advantage of the twoaxis automatic system over the single-axis automatic system is also presented. Experimental results on the single-axis sun sensor and its associated drive system are given. The experimental testing on the two-axis sun sensor and the complete two-axis system is included. Experimental results show the evolution from the simple automatic single-axis sensor with an accuracy of 10 degrees to the completely automatic two-axis system withpointing error of less than 1 degree. Conclusions and recommendations are provided to indicate the advantages and possible direction these orienting systems may take in their application to ground power devices. Author