Chapter
Apr 26, 2012
Robotic Lunar Geotechnical Tool
Authors: Kris Zacny [email protected], Jack Wilson, Jack Craft, Vivake Asnani, Heather Oravec, Colin Creager, Jerome Johnson, and Terry FongAuthor Affiliations
Publication: Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
Rover-mounted geotechnical systems are of paramount importance to lunar trafficability assessment, construction, and excavation/mining toward establishing permanent human presence on the Moon. These tools can also be used to determine density, when the regolith is used as radiation shield, for example. Two popular in-situ devices for establishing geotechnical properties of soil are the Static Cone Penetrometer (SCP) and Dynamic Cone Penetrometer (DCP). However, both systems have shortcomings that may prevent them from being robotically-deployed in a low gravity environment. In this paper we describe an alternative system, called the Percussive Dynamic Cone Penetrometer (PDCP) that can be used to robotically-measure geotechnical soil properties in a low gravity environment. It is shown that PDCP data correlates well with the data obtained from both SCP and DCP testing, and by extension with California Bearing Ratio (CBR) and soil bearing strength.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Affiliations
Honeybee Robotics, 460 West 34th Street, New York, NY 10001, USA. E-mail: [email protected]
Jack Wilson
Honeybee Robotics, 460 West 34th Street, New York, NY 10001, USA
Jack Craft
Honeybee Robotics, 460 West 34th Street, New York, NY 10001, USA
Vivake Asnani
NASA Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135, USA
Heather Oravec
NASA Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135, USA
Colin Creager
NASA Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135, USA
Jerome Johnson
Institute of Northern Engineering-UAF, PO Box 755910, Fairbanks, AK 99775, USA
Terry Fong
NASA Ames Research Center, Moffett Field, CA, USA
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