Shock protection of penetrator-based instrumentation via a sublimation approach

Details Shock protection of penetrator-based instrumentation via a sublimation approach Shock protection of penetrator-based instrumentation via a sublimation approach

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010adspr..45..460h&link_type=abstract

Advances in Space Research, Volume 45, Issue 3, p. 460-467.

Computer Science

Performance

2

Scientific paper

It is often necessary for space-borne instrumentation to cope with substantial levels of shock acceleration both in the initial launch phase, as well as during entry, descent and landing in the case of planetary exploration. Current plans for a new generation of penetrator-based space missions will subject the associated on-board instrumentation to far greater levels of shock, and ways must therefore be found to either ruggedize or else protect any sensitive components during the impact phase. In this paper, we present an innovative method of shock protection that is suited for use in a number of planetary environments, based upon the temporary encapsulation of said components within a waxy solid which may then be sublimated to return the instrument back to its normal operation. We have tested this method experimentally using micromachined silicon suspensions under applied shock loads of up to 15,000g, and found that these were able to survive without incurring damage. Furthermore, quality factor measurements undertaken on these suspensions indicate that their mechanical performance remains unaffected by the encapsulation and subsequent sublimation process.

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