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  • GEOPHYSICS  (4)
  • MATHEMATICS  (4)
  • LUNAR AND PLANETARY EXPLORATION  (2)
  • EARTH RESOURCES AND REMOTE SENSING  (1)
  • 1
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    Bearing strength of the lunar soil (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: A discussion is presented on the bearing strength and bearing load-penetration relations in lunar soil. These were measured in air as a function of bulk density. It was found that the relation between bulk density and the logarithm of the bearing capacity is about linear. Shapes of the load vs penetration curves were observed to be similar to those obtained with particulate material of terrestrial origin.
    Keywords: GEOPHYSICS
    Type: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 227-232
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Cracking of the lunar soil (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Rather than a pattern of cracks in an apparently flat surface, the Apollo 12 photographs suggest an irregular surface that consists of clods or fragments. The impression of flat tiles and crusting, obtained by monoscopic viewing, is an illusion. Instead, the lunar soil deforms and cracks in the same manner as homogeneous isotropic terrestrial soils of moderate bulk density, having a small amount of cohesion.
    Keywords: GEOPHYSICS
    Type: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 233-235
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Mars sample return through parking orbit (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: A Mars surface sample return mission using Mars direct entry and Mars parking orbit return is described. The mission is designed for a minimum energy requirement and is relatively simple in comparison to the alternative Mars orbital rendezvous mode. The design calls for minimal science, and uses a single Titan IIIE/Centaur launch vehicle. The primary science areas included are biology, biochemistry, geochemistry, and petrology, for detecting life, age dating, and determining chemical compositions and rock types. The total minimum sample requirement would be 30 g. Sampling conditions and recommended measurements are discussed. Maximum use of hardware and experience from the Mariner, Pioneer, and Viking missions is contemplated. The profile for a 1979 conjunction-class mission would include a total time of 1025 days, including one year in Mars parking orbit after sampling. The lander structure, components, and recovery alternatives are explained.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Astronautics and Aeronautics; 13; Jan. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    THERMAL PROPERTIES OF A SIMULATED LUNAR MATERIAL IN AIR AND IN VACUUM (1963)
    In:  Other Sources
    Details
    Publication Date: 2019-05-10
    Description: Thermal properties of simulated lunar materials in air and in a vacuum
    Keywords: MATHEMATICS
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    NASA TECHNICAL REPORTS
  • 5
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    EFFECTS OF SPACE ENVIRONMENT UPON PLASTICS AND ELASTOMERS (1963)
    In:  Other Sources
    Details
    Publication Date: 2019-05-10
    Description: Effects of vacuums, ionization, electromagnetic radiation and meteoroids on plastics, elastomers and organic coatings used in space vehicles
    Keywords: MATHEMATICS
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    NASA TECHNICAL REPORTS
  • 6
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    HIGH-TEMPERATURE TENSILE PROPERTIES OF GRAPHITES (1957)
    In:  Other Sources
    Details
    Publication Date: 2019-05-10
    Keywords: MATHEMATICS
    Type: JPL-PR-20-326
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    NASA TECHNICAL REPORTS
  • 7
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    EVAPORATION EFFECTS ON MATERIALS IN SPACE (1963)
    In:  Other Sources
    Details
    Publication Date: 2019-05-10
    Description: Vacuum environmental effects on the evaporation, sublimation and decomposition rates of materials for space application
    Keywords: MATHEMATICS
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    NASA TECHNICAL REPORTS
  • 8
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    Aerospace technology can be applied to exploration 'back on earth' (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Applications of aerospace technology to petroleum exploration are described. Attention is given to seismic reflection techniques, sea-floor mapping, remote geochemical sensing, improved drilling methods and down-hole acoustic concepts, such as down-hole seismic tomography. The seismic reflection techniques include monitoring of swept-frequency explosive or solid-propellant seismic sources, as well as aerial seismic surveys. Telemetry and processing of seismic data may also be performed through use of aerospace technology. Sea-floor sonor imaging and a computer-aided system of geologic analogies for petroleum exploration are also considered.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Oil and Gas Journal; Aug. 15
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Lunar crater arcs (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: An analysis has been made of the tendency of large lunar craters to lie along circles. A catalog of the craters at least 50 km in diameter was prepared first, noting position, diameter, rim sharpness and completion, nature of underlying surface, and geological age. The subset of those craters 50-400 km in diameter was then used as input to computer programs which identified each 'family' of four or more craters of selected geological age lying on a circular arc. For comparison, families were also identified for randomized crater models in which the crater spatial density was matched to that on the moon, either overall or separately for mare and highland areas. The observed frequency of lunar arcuate families was statistically highly significantly greater than for the randomized models, for craters classified as either late-pre-Imbrian (Nectarian), middle pre-Imbrian, or early pre-Imbrian, as well as for a number of larger age-classes. The lunar families tend to center in specific areas of the moon; these lie in highlands rather than maria and are different for families of Nectarian craters than for pre-Nectarian. The origin of the arcuate crater groupings is not understood.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: The Moon; 16; Dec. 197
    Format: text
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  • 10
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    Applications of aerospace technology to petroleum exploration. Volume 1: Efforts and results (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The feasibility of applying aerospace techniques to help solve significant problems in petroleum exploration is studied. Through contacts with petroleum industry and petroleum service industry, important petroleum exploration problems were identified. For each problem, areas of aerospace technology that might aid in its solution were also identified where possible. Topics selected for investigation include: seismic reflection systems; down-hole acoustic techniques; identification of geological analogies; drilling methods; remote geological sensing; and sea floor imaging and mapping. Specific areas of aerospace technology are applied to 21 concepts formulated from the topics of concern.
    Keywords: GEOPHYSICS
    Type: NASA-CR-152694 , JPL-DOC-5040-32-VOL-1
    Format: application/pdf
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