Incorporation of Atmospheric Neutron Single Event Effects Analysis into a System Safety Assessment

Paper #:
  • 2011-01-2497

Published:
  • 2011-10-18
Citation:
Dion, M. and Dominik, L., "Incorporation of Atmospheric Neutron Single Event Effects Analysis into a System Safety Assessment," SAE Int. J. Aerosp. 4(2):619-632, 2011, https://doi.org/10.4271/2011-01-2497.
Pages:
14
Abstract:
Atmospheric Neutron Single Event Effects (SEE) are widely known to cause failures in all electronic hardware, and cause proportionately more failures in avionics equipment due to the use altitude. In digital systems it is easy to show how SEE can contribute several orders of magnitude more faults than random (hard) failures. Unfortunately, current avionics Safety assessment methods do not require consideration of faults from SEE. AVSI SEE Task Group (Aerospace Vehicle Systems Institute Committee #72, on Mitigating Radiation Effects in Avionics) is currently coordinating development of an atmospheric Neutron Single Event Effects (SEE) Analysis method. This analysis method is a work in progress, in close collaboration with SAE S-18 and WG-63 Committees (Airplane Safety Assessment Committee). The intent is to include this method as part of current revisions to ARP4761 (Guidelines and Methods for Conducting the Safety Assessment Process on Civil Airborne Systems and Equipment).
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