Accession Number : ADA516830


Title :   Wave Front Sensor for Solar Concentrator Control


Descriptive Note : Journal article (postprint)


Corporate Author : AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE


Personal Author(s) : Beasley, Joseph N ; Holmes, Michael R ; Yeh, Hen-Geul


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a516830.pdf


Report Date : Oct 2009


Pagination or Media Count : 14


Abstract : This article is the culmination of research directed into finding a system to control the position of the focal spot of paraboloid concentrators for use in terrestrial and space solar concentration applications. After a brief introduction into the area of study, the article describes how a normal Shack-Hartmann wavefront sensor is modified for use in detecting and tracking the focal spot. The first experiment describes how the wavefront sensor is to be utilized in a solar application and shows the adjustment from lenslets to cylindrical mirrors on a thruster. Next, the paper details the analysis and development of the algorithms used in locating the focal spot on a thruster absorber utilizing a correlation method and an area centroid method. The article concludes with a paragraph on suitable future work.


Descriptors :   *WAVEFRONTS , *SOLAR RADIATION , REPRINTS , SPACE TECHNOLOGY , TRACKING , CONCENTRATION(COMPOSITION) , TERRESTRIAL RADIATION , MIRRORS , ALGORITHMS , DETECTORS


Subject Categories : Astrophysics
      Electric Power Production and Distribution


Distribution Statement : APPROVED FOR PUBLIC RELEASE