Results 251 to 260 of about 2,131,612 (313)
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Penetration resistance of lunar soils
Journal of Terramechanics, 1971Abstract Penetration resistance, in terms of the slope G of the stress penetration curve, has been correlated with density for a basaltic lunar soil simulant. The values were measured with the standard WES 30° cone penetrometer. This lunar soil simulant has been found to possess the same penetration resistance characteristics as the Apollo ...
W.N. Houston, L.I. Namiq
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Magnetic separation of lunar soils
IEEE Transactions on Magnetics, 1991The authors report measurements of the distribution by magnetic susceptibility of anorthite, ilmenite, pyroxene, and metallic iron separated from the minus 1-mm size fraction of five lunar samples using a Frantz isodynamic separator. Low-iron content, pure anorthite was separated from the feebly paramagnetic fractions of an immature anorthistic ...
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Measurement and calibration of DEM parameters of lunar soil simulant
Acta Astronautica, 2021Jianzhong Zhu +5 more
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DEM modelling of cone penetration tests in lunar soil
Granular Matter, 2021M. Jiang, T. Zhao, Xingxing Wang
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Lunar Soil Sampling and Testing
1962The limited real data available on the lunar environment is presented and several selected references are listed. Soil is usually tested for the properties that are expected to change and differ from one environment to another, whereas the properties that are more or less in equilibrium in any terrestrial environment are not tested.
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Development of Soil on the Lunar Surface
SEPM Journal of Sedimentary Research, 1972Discussion of the dynamic processes involved in the evolution of the lunar soil. Size, shape, and modal analyses of soil returned by Apollo 11, 12, 14, and 15, and Luna 16 indicate that the two most important dynamic processes resulting from meteorite impact are vitrification and comminution of the detrital material.
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Bearing strength of lunar soil
The Moon, 1971Bearing 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.
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Effect of drill bit structure on sample collecting of lunar soil drilling
Advances in Space Research, 2021Tianxi Liu +4 more
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Size Distribution of Lunar Soil
Nature, 1970WHEN Duke et al.1 measured the size of lunar soil returned by Apollo 11, they found a size distribution similar to that of glacial till and other terrestrial soil, except that the lunar soil is noticeably deficient in material finer than 15 µm. They feel that a partial explanation for this deficiency is that it is caused by melting and consequent ...
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