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  • 1
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    NASA solar array flight experiment (1982)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: The NASA large flexible solar array space shuttle flight experiment is described. The 32 x 4 m wing is deployed from the shuttle bay, and experiments in electrical output, multiple deployment, and structural dynamics are planned. Both 2 x 4 cm and 5.9 x 5.9 cm cell assemblies on the array blanket are evaluated. Safety/hazards provisions are described, including emergency jettison provisions. Ground testing and hardware fabrication are summarized.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: ESA Photovoltaic Generators in Space; p 179-184
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Second generation detector for low order global solar oscillations (1980)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: The first observations of long period low order global solar oscillations grew out of diameter measurements made over an extended period of time. As a result of these investigations, a detailed understanding of the surface properties of the oscillations evolved, allowing development of a second generation detector. This new detector, currently under development directly utilizes various surface properties of the oscillations and does not, therefore, directly involve diameter measurements. The specifications of the detector, its supporting telescope and the observing program are reviewed.
    Keywords: SOLAR PHYSICS
    Type: NASA. Goddard Space Flight Center Study of the Solar Cycle from Space; p 137-146
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Observed Spatial Properties of the Solar Eigenfunctions and the Implications for the Existence of Resolved Multiplets (1984)
    In:  CASI
    Details
    Publication Date: 2014-08-21
    Description: Solar oscillations are manifested in the solar atmosphere as spatial and temporal perturbations in the local thermodynamical and mechanical properties. When measuring the solar radius/diameter, these perturbations enter the observation through changes in the radiative source function and opacity at the extreme limb. When compared to the disk center, the observable portion of these perturbations is changed in spatial character by projection effects and oblique optical depth geometry. The time varying solar radius signal at SCLERA (Santa Catalina Laboratory for Experimental Relativity) is produced by an edge definition sensitive to the resultant changes in the spatial shape of the limb intensity profile. An attempt is made to further determine the shape and properties of the limb signals which display global solar oscillations.
    Keywords: SOLAR PHYSICS
    Type: JPL Solar Seismology from Space.; p 207-217
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    A Correlation Between Changes in Solar Luminosity and Differential Radius Measurements (1990)
    In:  CASI
    Details
    Publication Date: 2014-09-23
    Description: Solar luminosity variations occurring during solar cycle 21 can be attributed in large part to the presence of sunspots and faculae. Nevertheless, there remains a residual portion of the luminosity variation distinctly unaccounted for by these phenomena of solar activity. At the Santa Catalina Laboratory for Experimental Relativity by Astrometry (SCLERA), observations of the solar limb are capable of detecting changes in the solar limb darkening function by monitoring a quantity known as the differential radius. These observations are utilized in such a way that the effects of solar activity are minimized in order to reveal the more fundamental structure of the photosphere. The results of observations made during solar cycle 21 at various solar latitudes indicate that a measurable change did occur in the global photospheric limb darkening function. It is proposed that the residual luminosity change is associated in part with this change in limb darkening.
    Keywords: SOLAR PHYSICS
    Type: NASA, Goddard Space Flight Center, Climate Impact of Solar Variability; p 65-72
    Format: application/pdf
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  • 5
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    Solar Array Experiment (SAE) Flight Experience (1985)
    In:  CASI
    Details
    Publication Date: 2014-09-19
    Description: The space flight testing of a large, flat, flexible panel solar array is examined. The experiment objectives are: to demonstrate the functional operational of the wind deployment and packaging system; Electrical performance; Thermal performance; and dynamic performance. A complete description of the experiment and the flight results are given.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Langley Research Center Large Space Antenna systems Technol., 1984, Pt. 2; p 845-854
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Sclera solar diameter observations (1981)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Focus is given to possible variations in solar luminosity and accurate methods of monitoring it. Aside from direct bolometry, one methodology for this type of research makes use of measurements of the solar diameter and limb darkening function as indirect indicators of the solar luminosity. This approach was reviewed.
    Keywords: SOLAR PHYSICS
    Type: NASA. Goddard Space Flight Center Variations of the Solar Constant; p 123-128
    Format: application/pdf
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  • 7
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    Solar pulsations and long-term solar variability (1981)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The seismology of the solar atmosphere is important in relating changes in luminosity to variations in other observables. This approach has already led to the identification of properties which were not previously observed or recognized. Equally important results from solar seismology are expected in the future.
    Keywords: SOLAR PHYSICS
    Type: NASA. Goddard Space Flight Center Variations of the Solar Constant; p 229-233
    Format: application/pdf
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  • 8
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    Solar diameter measurements for study of Sun climate coupling (1981)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Variability in solar shape and diameters was examined as a possible probe of an important climatic driving function, solar luminosity variability. The techniques and facilities developed for measuring the solar diameter were used. The observing program and the requisite data reduction were conducted simultaneously. The development of a technique to calibrate the scale in the telescope field progressed to the design and construction phase.
    Keywords: SOLAR PHYSICS
    Type: NASA-CR-166786 , NAS 1.26:166786
    Format: application/pdf
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