Resolved: Re: 11/34 sanity check

Tapley, Mark mtapley at
Thu Apr 30 09:22:09 CDT 2015

On Apr 30, 2015, at 5:51 AM, Johnny Billquist <bqt at> wrote:

> It would have been very stupid to just have keyed connectors and then assume that things could never be plugged in wrong.

That is *true*.  We carefully keyed connectors on a mission I worked on. The technicians at our Spacecraft vendor, who make a living making sure the right connector goes the right way in the right socket, worked hard enough to defeat the keying preventing them from plugging the spacecraft cable into the payload socket.(In their defense, it was about 0600 Sunday morning, but still.) We had several days of work in front of us trying to prove (analysis and test) that nothing got shorted in a damaging way. 

Johnny’s comment was as true when we got overruled on using different size connectors as it is now. I feel for Ethan in a very very sympathetic way.

									- Mark

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