Soil mechanics surface sampler
1969; American Geophysical Union; Volume: 74; Issue: 25 Linguagem: Inglês
10.1029/jb074i025p06175
ISSN2156-2202
AutoresRonald F. Scott, F. I. Roberson,
Tópico(s)Spacecraft and Cryogenic Technologies
ResumoJournal of Geophysical Research (1896-1977)Volume 74, Issue 25 p. 6175-6214 Soil mechanics surface sampler R. F. Scott, R. F. ScottSearch for more papers by this authorF. I. Roberson, F. I. RobersonSearch for more papers by this author R. F. Scott, R. F. ScottSearch for more papers by this authorF. I. Roberson, F. I. RobersonSearch for more papers by this author First published: 15 November 1969 https://doi.org/10.1029/JB074i025p06175Citations: 15AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract A lunar surface sampler essentially identical to that operated from Surveyor 3 was mounted on Surveyor 7 and performed flawlessly on the moon throughout a range of operating temperatures from +180°F to −167°F. The motor current was sampled during lunar bearing and trenching tests, and these data, together with preflight calibrations enabled us to calculate the forces involved in these tests. After minimal lunar surface testing, the surface sampler was employed to release the sensor head of the α-scattering instrument, which had jammed in its background position. Subsequently, the sensor head was relocated to analyze a rock and, still later, to analyze some subsurface lunar material. The mechanical tests of the surface in the vicinity of Tycho indicated that the surface behaved in a manner that was quantitatively similar to the behavior of the material close to Surveyor 3, but the surface near Tycho appeared qualitatively to be more deformable and less brittle. A rock was weighed and found to have a density between 2.4 and 3.1 g/cm3 (earth basis). Another rock was broken by a moderately hard blow from the sampler. The soil varied in depth from 1 to at least several inches over underlying rock fragments near Surveyor 7. Little adhesion of lunar soil to the mirror surface of the α-scattering experiment sensor head was observed over a 24-hour period. Citing Literature Volume74, Issue2515 November 1969Pages 6175-6214 This article also appears in:Report on Surveyor 7 Project RelatedInformation
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