TY - JOUR
T1 - Target effects during penetrator emplacement
T2 - Heating, triboelectric charging, and mechanical disruption
AU - Lorenz, Ralph D.
AU - Shandera, Sarah E.
N1 - Funding Information:
We thank Jeff Moersch, now of the University of Tennessee, Andy Stone and Ron Morgan of JPL, and Kent Harvey and the staff at EMRTC for assistance with the tests in New Mexico. Bill Verts, Mike Williams and Brett Lawrie of the LPL Machine Shop are thanked for their patient assistance with the tests at UA. This work was supported by NASA via the New Millennium DS-2 project. SE Shandera was supported during part of this work by a grant from the Arizona Space Grant Consortium. Karsten Seiferlin and Norbert Kömle are thanked for their careful and constructive reviews.
PY - 2002/2
Y1 - 2002/2
N2 - The violent emplacement of penetrators has effects on the target material which, while largely ignored to date, may be quite significant in the interpretation of scientific data returned from penetrators or may even cause system failures. These effects, for which we offer preliminary quantification, include heating of the target material, largely but not exclusively by frictional heating along the walls of the penetrator, the development of triboelectric charge, and the mechanical compaction, comminution and fracturing of the target material. The sparse and often difficult-to-obtain literature on these processes is summarized, and some unique preliminary experiments conducted in support of the NASA DS-2 Mars Microprobe mission are reported. We urge future spacecraft penetrator projects to pay attention to these interesting and important phenomena.
AB - The violent emplacement of penetrators has effects on the target material which, while largely ignored to date, may be quite significant in the interpretation of scientific data returned from penetrators or may even cause system failures. These effects, for which we offer preliminary quantification, include heating of the target material, largely but not exclusively by frictional heating along the walls of the penetrator, the development of triboelectric charge, and the mechanical compaction, comminution and fracturing of the target material. The sparse and often difficult-to-obtain literature on these processes is summarized, and some unique preliminary experiments conducted in support of the NASA DS-2 Mars Microprobe mission are reported. We urge future spacecraft penetrator projects to pay attention to these interesting and important phenomena.
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U2 - 10.1016/S0032-0633(01)00108-8
DO - 10.1016/S0032-0633(01)00108-8
M3 - Article
AN - SCOPUS:84867925990
SN - 0032-0633
VL - 50
SP - 163
EP - 179
JO - Planetary and Space Science
JF - Planetary and Space Science
IS - 2
ER -