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  • LUNAR AND PLANETARY EXPLORATION  (11)
  • PROPULSION SYSTEMS  (9)
  • 1
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    New models for landform evolution on Io (1984)
    In:  CASI
    Details
    Publication Date: 2006-04-06
    Description: As part of the Galilean Satellites Mappers Program, the South Polar region of Io was studied. Examination of the Voyager images had led to reassessment of the possible mechanisms by which certain units were created or modified in this area. Specifically, analyses have focused on determining the relative age of the mountain material and on the process by which the layered plains material was eroded.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA. Washington Repts. of Planetary Geol. Program; p 32-33
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    NASA TECHNICAL REPORTS
  • 2
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    Reaction control system preliminary design considerations for a jet-lift research aircraft (1967)
    In:  Other Sources
    Details
    Publication Date: 2011-08-12
    Description: Preliminary design concept of jet lift research aircraft reaction control system
    Keywords: PROPULSION SYSTEMS
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  • 3
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    Study of zero-gravity, vapor/liquid separators (1966)
    In:  CASI
    Details
    Publication Date: 2019-05-29
    Description: Heat exchange, mechanical separation, surface tension, and dielectrophoretic methods of separating vapor from liquid at zero gravity for vapor venting
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-71624 , GDC-DDB65-009
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    NASA TECHNICAL REPORTS
  • 4
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    Stratigraphy of Oceanus Procellarum basalts - Sources and styles of emplacement (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The basaltic fill of Oceanus Procellarum has been formally subdivided into four lithostratigraphic formations: The Repsold Formation, the Telemann Formation, the Hermann Formation, and the Sharp Formation. The Repsold Formation is composed of high-Ti basalts and pyroclastic deposits with an estimated age of 3.75 + or - 0.05 b.y. and an estimated volume of about 2.1 x 10 to the 5th cu km. This is overlain by the Telemann Formation composed of very low-Ti basalts and pyroclastic deposits with an estimated age of 3.6 + or - 0.2 b.y. and a volume of 4.2 x 10 to the 5th cu km. The Hermann Formation, composed of intermediate basalts with an estimated age of 3.3 + or - 0.3 b.y., represents the next youngest unit with an estimated volume of 2.2 x 10 to the 5th cu km. The youngest materials in Procellarum are the medium-to-high-Ti basalts comprising the Sharp Formation with an estimated age of 2.7 + or - 0.7 b.y. and a volume of 1.8 x 10 to the 4th cu km.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research; 85; Nov. 10
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  • 5
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    Late high-titanium basalts of the western maria - Geology of the Flamsteed region of Oceanus Procellarum (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The evolution, geology, geochemistry and topology of the Flamsteed region of Oceanus Procellarum are examined, considering remote sensing data including multispectral images and spectral reflectance measurements along with crater degradation studies and radar backscatter. Seven spectrally distinct basaltic units ranging in age from 2.5 plus or minus 0.5 to 3.5 plus or minus 0.5 billion years have been identified. The earliest units of the mapped area are composed of highlands material and include partially flooded impact craters, and the oldest surface exposed mare basalts are very low Ti basalts of the Telemann formation.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research; 85; July 10
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  • 6
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    The evolution of the lunar Nectaris multiring basin (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The paper begins by discussing the pre-Nectaris crust, the formation of the basin, its age and its geophysics. The pre-mare basalt deposits are categorized into smooth plains deposits, cratered and patterned plains, knobby terrain, and massifs, and the structure, chemical composition, and probable origin of these are discussed. Alternative scenarios for the formation of the plains are that they consist of impact melt ejecta, ejecta overlying smoothed-out preexisting topographic material, or ejecta overlying extrusive deposits. The mare deposits are assessed in terms of their composition, basalt ages and thickness, and eruption styles. A probable age of 3.6 billion years for the basalts is given. The tectonics of mare ridges and fractures and floor-fractured craters are gone into. Post-mare cratering is also discussed. It is concluded that the morphology of multiring basins is strongly dependent on lithosphere thickness.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Icarus; 48; Dec. 198
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  • 7
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    Tharsis volcanoes - Separation distances, relative ages, sizes, morphologies, and depths of burial (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Network analysis indicates the separation distances of the Tharsis volcanoes to be 700 to 900 km; this is considered to be the thickness of the Tharsis thermal lithosphere or 'tectosphere' which has thickened with time. Although as a whole the Tharsis volcanoes exhibit a random distribution, preferential alignments emerge when the history of the region is divided into separate periods. The preferential alignments mimic those of fractures in the surrounding terrain. Photogeologic and morphometric data indicate that the volcanoes fall into four distinct classes: montes, tholi, paterae, and a class whose sole representative is Alba Patera. The volcanoes have been buried by lava up to about 4 km in thickness. The sizes of the volcanoes directly correlate with their separation distances from their nearest neighbors. It is concluded that the greater the lithosphere thickness, the larger will be the volcano and the greater its separation distance from its nearest neighbor.
    Keywords: LUNAR AND PLANETARY EXPLORATION
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  • 8
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    A preliminary analysis of lunar extra-mare basalts - Distribution, compositions, ages, volumes, and eruption styles (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Extra-mare basalts occupy 8.5% of the lunar basalt area and comprise 1% of the total mare basalt volume. They are preferentially located where the crust is thin and topographically low. In terms of age, eruption style, and composition they are as variable as the mare basalts. In some instances extrusion in extra-mare craters was preceded by floor-fracturing whereas in other cases it apparently was not. The volume of lava erupted may have been controlled more by the volume of magma produced than by hydrostatic effects. A minimum of nearly 1300 separate basalt eruptions is indicated; the true value could be nearer 30,000 separate eruptions.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Moon and the Planets; 26; May 1982
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  • 9
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    Annular slit colloid thruster research and development (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Research in optimization of performance, and performance characteristics of annular slit colloid thruster
    Keywords: PROPULSION SYSTEMS
    Type: NASA-TN-D-7001 , G-1002
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  • 10
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    Design and development of a Micropound Extended Range Thrust Stand /MERTS/ (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Micropound extended range thrust test stand design and cesium engine calibrating standards
    Keywords: PROPULSION SYSTEMS
    Type: NASA-TN-D-7029 , G-1010
    Format: application/pdf
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