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  • PHYSICS, GENERAL  (1)
  • PROPULSION SYSTEMS  (1)
  • SOLAR PHYSICS  (1)
  • 1
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    Solar variability and ozone (1979)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Stratospheric temperature and concentration of ozone above 26 km, as measured by rocket-borne instruments, showed an increase from 1964 to 1969-70, and a decline between 1970 and 1975, closely following the solar cycle, which peaked in 1969 (+0.89 correlation at both 35 and 50 km). Similar correlations were found between the ozone density and the 10.7 cm solar radio flux (as measured by the Nimbus IV satellite), and between ozone column density and the Lyman-alpha flux, both observations being taken over the same 10 month period. A mechanism is hypothesized which would link solar flux variation with both changes in stratospheric temperature and concentration of ozone (which is produced by the photodissociation of stratospheric oxygen molecules by solar radiation in the ultraviolet wavelength region).
    Keywords: SOLAR PHYSICS
    Type: New Scientist; 84; Nov. 15
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    A theoretical study of the effect on expansion-tube performance of area changes at primary and secondary diaphragm stations (1966)
    In:  CASI
    Details
    Publication Date: 2019-05-29
    Description: Divergent nozzle location effects on viscous and diaphragm problems in expansion tube supersonic flow
    Keywords: PROPULSION SYSTEMS
    Type: NASA-TN-D-3303
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    The radiative transfer equation and environmental effects in the upper atmosphere. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A highly effective approach to the solution of the radiative transfer equation, including the effects of emission, absorption, and multiply scattered radiation, is described. The transfer equation is cast in its unsteady hyperbolic form which is amenable to several different numerical methods of solution. Comparisons of solutions with emission, absorption, and scattering of radiation, are presented to demonstrate the validity of the present approach.
    Keywords: PHYSICS, GENERAL
    Type: AIAA PAPER 72-663 , American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference; Jun 26, 1972 - Jun 28, 1972; Boston, MA
    Format: text
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    NASA TECHNICAL REPORTS
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