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  • 1
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    Bearing strength of the lunar soil (1972)
    In:  CASI
    Details
    Publikationsdatum: 2005-11-30
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Materialart: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 227-232
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  • 2
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    Lunar surface: Changes in 31 months and micrometeoroid flux (1972)
    In:  CASI
    Details
    Publikationsdatum: 2005-11-30
    Beschreibung: A preliminary comparison of Surveyor 3 and Apollo 12 photographs of areas disturbed by the Surveyor is described. About 60 Surveyor pictures taken in April and May 1967 and 20 Apollo photographs including stereo pairs were examined in detail. Only one definite change in the surface, other than those produced by astronauts, was noted. This is a particle about 2 mm in diameter which appears in the Apollo photographs of a Surveyor footpad imprint but which does not appear in the Surveyor photographs. The walls made by Surveyor footpads and surface sampler were still in place, and surface areas darkened by ejected fines during the Surveyor landing still appeared dark. The absence of detectable craters in the footpad imprint implies a very low micrometeorite flux on the lunar surface.
    Schlagwort(e): SPACE SCIENCES
    Materialart: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 173-176
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  • 3
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    Blowing of lunar soil by Apollo 12: Surveyor3 evidence (1972)
    In:  CASI
    Details
    Publikationsdatum: 2005-11-30
    Beschreibung: It is shown that the discoloration pattern of the Surveyor 3 camera provides evidence that the camera surface was whitened by the impact of particles blown from the lunar surface by the exhaust of the lunar module as it landed. It also indicates the velocity and direction at which these particles were ejected.
    Schlagwort(e): SPACE SCIENCES
    Materialart: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 94-96
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  • 4
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    Cracking of the lunar soil (1972)
    In:  CASI
    Details
    Publikationsdatum: 2005-11-30
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Materialart: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12; p 233-235
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  • 5
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    Cracking of lunar mare soil. (1971)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: Demonstration that lunar soil deforms and cracks in the same manner as homogeneous isotropic terrestrial soil s of moderate bulk density with a small amount of cohesion. This conclusion is made from an analysis of Surveyor 3 TV pictures and of Apollo 11 closeup picture of lunar surface disturbances by bearing tests and instrument pressure.
    Schlagwort(e): SPACE SCIENCES
    Materialart: Nature; 234; Dec. 17
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  • 6
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    Principal scientific results from the Surveyor program (1970)
    In:  Other Sources
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    Publikationsdatum: 2011-08-16
    Beschreibung: Surveyor program results, discussing lunar craters, rock fragments, particle size optical, thermal and radar characteristics and chemical composition
    Schlagwort(e): SPACE SCIENCES
    Materialart: ; ACE(
    Format: text
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  • 7
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    The earth resources survey program jells (1971)
    In:  Other Sources
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    Publikationsdatum: 2011-08-16
    Beschreibung: NASA Earth Resources Survey Program as basis for future earth survey system combining spaceborne, airborne and ground observations
    Schlagwort(e): GEOPHYSICS
    Materialart: ; ADEMIE DES SCIENCES
    Format: text
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  • 8
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    Blowing of lunar soil by Apollo 12 - Surveyor 3 evidence (1971)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: Surveyor 3 spacecraft TV camera surface discoloration patterns caused by lunar soil blown by Apollo 12 exhaust
    Schlagwort(e): SPACE SCIENCES
    Materialart: ; BROTECHNIKA, NO. 1(
    Format: text
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  • 9
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    Lunar surface - Changes in 31 months and micrometeoroid flux (1970)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: Low micrometeoroid flux on lunar surface from comparative Surveyor 3 and Apollo 12 pictures
    Schlagwort(e): SPACE SCIENCES
    Materialart: ; ADEMIE DES SCIENCES
    Format: text
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  • 10
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    Bearing strength of lunar soil. (1971)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: Bearing load vs penetration curves have been measured on a 1.3 g sample of lunar soil from the scoop of the Surveyor 3 soil mechanics surface sampler, using a circular indentor 2 mm in diameter. Measurements were made in an Earth laboratory, in air. This sample provided a unique opportunity to evaluate earlier, remotely controlled, in-situ measurements of lunar surface bearing properties. Bearing capacity, measured at a penetration equal to the indentor diameter, varied from 0.02-0.04 N/sq cm at bulk densities of 1.15 g/cu cm to 30-100 N/sq cm at 1.9 g/cu cm. Deformation was by compression directly below the indentor at bulk densities below 1.61 g/cu cm, by outward displacement at bulk densities over 1.62 g/cu cm. Preliminary comparison of in-situ remote measurements with those on returned material indicates good agreement if the lunar regolith at Surveyor 3 has a bulk density of 1.6 g/cu cm at 2.5 cm depth.
    Schlagwort(e): SPACE SCIENCES
    Materialart: The Moon; 3; Dec. 197
    Format: text
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