[time-nuts] Fundamental limits on performance
jfor at quik.com
Mon Sep 14 16:26:22 UTC 2009
I've watched a brassboard of a spacecraft payload I was building on a
shake table. It just weird to watch screws backing out of holes as if by
magic, components dancing, and plates oilcanning.
A real education!
> Mark Sims wrote:
>> Oh, yeah... shaker tables... gotta love 'em.
>> I once designed a couple of circuit boards for a rather critical
>> application that was going to take a LOT of pounding. The mechanical
>> guys had great faith in their work. I insisted to the powers that be
>> that the unit had to be shake tested... but they were not taking any of
>> that from a stupid EE.
>> I finally had made such a pest of myself that they finally agreed to a
>> shake test. The mechanical guys took their baby in and came back with a
>> bag of parts... observers said screws and panels were flying like
>> shrapnel. Mechanical guys quit before they could be fired...
> To what good? Wouldn't it be better if they stayed and learned? You
> build experience by trying, failing and analyzing why... all three of
> them. You can also learn by learning from others... so the trying,
> failing and analyzing cycle doesn't have to turn as many rounds and be
> as expensive and time-consuming... but you still need to do that.
> It's the mindset of the organization and the people in it that is
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