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Hmmm, Thanks! Did NASA harden the space shuttle HP-41's for cosmic radiation?
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Joined: Jul 2005
Once I saw a US mortar crew using an HP-41 in the "battle case," as it was known back then. Thankfully I got some pictures from a fellow member of the Forum.
By the way, back in the 1970s and 1980s, the Russians built their bombers' electronics with sort of an "outer core" of vacuum tubes, and an internal core of microchips. Both operated jointly, and the vacuum tubes were supposed to block the Compton effect radiation of the EMP that would fry the chips. A rough but usable solution. Western bombers had different protective systems, based to some extent on the battle case, but less is known about their electronics package protection.
Ren: I read that the 41 was slightly modified for zero-gravity operation aboard the Space Shuttle. The whole story is in a link on a message thread about two weeks old.