Henry Spencer wrote:
A "barbecue roll" in fact isn't *that* common; most spacecraft are
designed to handle being constantly one side to the Sun. Apollo did
it not to keep things from getting too hot, but to keep one specific
thing from getting too cold: it proved impossible to qualify the CM
heatshield material for prolonged "cold soak" conditions, so a slow
rotation with the spacecraft axis roughly perpendicular to the
sunlight was needed to keep it within its temperature limits.

Did Apollo 13 then give them that qual?

rick jones
--
portable adj, code that compiles under more than one compiler
these opinions are mine, all mine; HP might not want them anyway...
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...