Chapter
Apr 26, 2012
Helical Anchors for Combined Anchoring and Soil Testing in Lunar Operations
Authors: J. Ledlie Klosky, Stein Sture, Hon-Yim Ko, and Frank BarnesAuthor Affiliations
Publication: Space 98
Abstract
Recent experiments by the investigators have shown that practically sized helical anchors can provide significant resistance to uplift forces in the lunar simulant JSC-1. Properly scaled to account for differences in the gravity fields between the benchtop environment on Earth and the lunar surface, these experiments provide valuable insight into the likely behavior of anchors in uplift on the Moon. Preliminary results of these uplift experiments are presented and discussed. Further, installation torque was monitored during the installation of these augered-anchors, and these torque data appear to correlate with the soil strength, providing a consistent indication of soil strength with depth. Properly calibrated, these anchors might serve a dual purpose on a surface rover, providing stability during difficult maneuvers and simultaneously providing valuable information on the nature of the subsurface soils. These issues are discussed.
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Copyright
© 1998 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Aerospace engineering
- Anchors
- Astronomy
- Calibration
- Design (by type)
- Engineering fundamentals
- Equipment and machinery
- Geomechanics
- Geotechnical engineering
- Load and resistance factor design
- Load factors
- Lunar materials
- Measurement (by type)
- Moon
- Soil dynamics
- Soil mechanics
- Soil properties
- Soil strength
- Soil tests
- Space colonies
- Structural design
- Tests (by type)
- Uplifting behavior
Authors
Affiliations
J. Ledlie Klosky
Assistant Professor, Department of Civil Engineering, The Catholic University of America
Stein Sture
Professor of Civil Engineering, University of Colorado at Boulder
Hon-Yim Ko
Professor of Civil Engineering, University of Colorado at Boulder
Frank Barnes
Professor of Electrical Engineering, University of Colorado at Boulder
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