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  • Other Sources  (39)
  • 1
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    Lunar electrical conductivity profile (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Lunar electrical conductivity profile measurements, providing mantle-core stratification near surface thermal gradient, heat flux and composition data
    Keywords: SPACE SCIENCES
    Type: ; YSICA STATUS SOLIDI
    Format: text
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  • 2
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    The motional voltmeter - A method of distinction between a hot and cold moon based upon the solar wind-induced planetary dynamo current system. (1968)
    In:  Other Sources
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    Publication Date: 2011-08-12
    Description: Lunar interior thermal regime measurement method based on dynamo induction of electric field on planetary scale by solar wind
    Keywords: SPACE SCIENCES
    Type: ; RO(
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  • 3
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    Unipolar interaction of Mercury with the solar wind - The steady state bow shock problem. (1972)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: The steady state electromagnetic interaction of the solar wind with the planet Mercury is computed for a spectrum of electrical conductivity functions using the assumption that no atmosphere or planetary magnetic field prohibits the direct interaction. The form of the induction is described by the unipolar effect and corresponds to the zero frequency limit of a transverse magnetic (TM) mode. Calculations are included to determine the effective surface temperature of the planet. These calculations include the apparent motion of the sun in the Hermean sky. It is shown that a significant interaction, detectable by a space probe, is plausible for reasonable conductivity functions. The strength of the interaction is considered in terms of the subsurface thermal gradient, and computations are given relating the strength of the solar wind interaction with the conductivity parameters.
    Keywords: SPACE SCIENCES
    Type: Earth and Planetary Science Letters; 14; Apr. 197
    Format: text
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  • 4
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    Induced magnetosphere of the moon. II - Experimental results from Apollo 12 and Explorer 35. (1973)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: The asymmetric lunar electromagnetic induction theory of Schubert et al. (1973) is tested by using data from the Apollo 12 Lunar Surface Magnetometer and from the Ames magnetometer on Explorer 35. The comparison of data and theory shows that the moon displays an induction asymmetry due to the flow of the solar wind and the formation of the diamagnetic cavity on the darkside. It is inferred that the induced field forms a magnetospheric-like configuration, with the field confined mostly to the crust of the moon. Although the magnetospheric spectrum is time-dependent for all frequencies examined, the distance traveled by the solar wind is so large that a quasi-static magnetospheric configuration can be assumed. The differential power spectrum of the interplanetary magnetic field that excites the moon is compared with the resulting induction spectrum, which has a linear differential power frequency dependence over the frequency range from .0002 to .02 Hz, falling off on either side of these limits. The integrated power in this band is about 5 gamma squared for the interplanetary field local north-south component and about 12 gamma squared for the induced spectrum of this component on the lunar surface.
    Keywords: SPACE SCIENCES
    Type: Journal of Geophysical Research; 78; Sept. 1
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  • 5
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    Electrical heating of meteorite parent bodies and planets by dynamo induction from a pre-main sequence T Tauri ''solar wind.'' (1968)
    In:  Other Sources
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    Publication Date: 2011-08-12
    Description: Meteorite heating by dynamo induction from pre- main sequence T Tauri type solar wind
    Keywords: SPACE RADIATION
    Type: ; ACE(
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  • 6
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    Propellant combustion response to oscillatory radiant heat flux (1987)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: An introductory progress report is given on a research project to use the microwave Doppler velocimeter technique to measure the combustion response to an oscillating thermal radiation source (laser). The objective is to relate the measured burning rate response to the thermal radiation to an equivalent oscillation in pressure using existing thermal combustion theory. The test system is described, and the results of an initial test series on the composite propellant A-13 are presented.
    Keywords: PROPELLANTS AND FUELS
    Type: JHU, The 24th JANNAF Combustion Meeting, Volume 1; p 41-49
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  • 7
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    Induced magnetosphere of the moon. I - Theory. (1973)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: An analytic solution for the magnetic field in the space defined by a spherical moon and its downstream cylindrical cavity formed by the solar wind is derived for interplanetary magnetic fields both parallel and perpendicular to the cavity axis. By superposition, the solution is obtained for arbitrary orientations of the interplanetary field. The theory is quasi-static and is formulated in terms of a scalar magnetic potential. Thus, the moon model consists of a core of arbitrary size and infinite electrical conductivity surrounded by a nonconducting shell; the cavity volume is also assumed to be nonconducting. The variation of the magnetic field on the lunar surface (both sunlit and dark hemispheres) and on the cavity boundary is presented for various values of core radius.
    Keywords: SPACE SCIENCES
    Type: Journal of Geophysical Research; 78; May 1
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  • 8
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    Lunar electromagnetic scattering. I - Propagation parallel to the diamagnetic cavity axis. (1973)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: A general analytic solution is obtained for the interaction of the moon and its downstream cavity with a linearly polarized plane electromagnetic wave propagating parallel to the cavity axis. The solution is formulated in terms of a spherical moon model with arbitrary radially dependent electromagnetic parameters and a nonconducting cylindrical downstream cavity. Use is made of a number of approximations that are consistent with the physical nature of the interaction between the moon and the solar wind.
    Keywords: SPACE SCIENCES
    Type: Journal of Geophysical Research; 78; Oct. 1
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  • 9
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    Night side electromagnetic response of the moon. (1973)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: The inductive response of the moon to interplanetary magnetic field fluctuations has been measured by the Apollo 12 lunar surface magnetometer. The dependence of the night side lunar response on frequency in the band from about 0.001 to 0.01 Hz is reported. It is shown that the night side response of the moon is not that of a sphere in vacuum. Instead, hydromagnetic radiation scattered from the moon is strongly confined to the interior of the cavity formed downstream from the moon in the solar wind.
    Keywords: SPACE SCIENCES
    Type: Journal of Geophysical Research; 78; July 1
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  • 10
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    Topology of induced lunar magnetic fields. (1973)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: Using the asymmetric theory of lunar induction derived by Schubert et al. (1973), a picture of both the total and induced magnetic field line distributions in and around the moon is provided for certain orientations of the interplanetary field fluctuations. These field line pictures are compared with the distributions one would obtain using a spherically symmetric vacuum theory of lunar induction. It is found that the induced lunar field line distribution bears a marked resemblance to the structure of the solar-wind distorted geomagnetic field.
    Keywords: SPACE SCIENCES
    Type: The Moon; 7; May-June
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