Impact penetrometer systems for characterizing soil properties
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United States of America Patent
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Feb 25, 2014
Grant Date -
Jul 12, 2012
app pub date -
Sep 12, 2011
filing date -
Sep 17, 2010
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Abstract
A dual aerial-drop penetrometer system includes a high-velocity (>30 m/s) penetrometer aerial unit combined with a low-velocity (<10 m/s) penetrometer aerial unit. The primary penetrometer is formed as an outer shell having the secondary penetrometer received in telescoping fashion within, which is ejected by a spring ejection mechanism upon impact of the outer shell. Both penetrometers provide deceleration information as they penetrate the soil of interest. The data from the two penetrometers, after analysis, can be used to assess soil strength as well as trafficability for the deployment of remotely-controlled vehicles, for example.
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