There was an interesting 2012 interview with John Muratore (SpaceX director of vehicle certification) about radiation tolerant design on SpaceX Dragon: <a href="http:&#x2F;&#x2F;aviationweek.com&#x2F;blog&#x2F;dragons-radiation-tolerant-design" rel="nofollow">http:&#x2F;&#x2F;aviationweek.com&#x2F;blog&#x2F;dragons-radiation-tolerant-desi...</a>