scott@hpsdde.hp.com (Scott Roleson) (10/31/89)
Hello Ron Baalke at JPL,
In your recent posting to sci.space.shuttle "DAILY STATUS/KSC...10-27-89",
you state that "DUE TO A PROBLEM ESTABLISHING THE HST SINGLE POINT GROUND,
BATTERY CHARGING...HAVE BEEN DELAYED".
I found this curious. My first thought was that something as important
at the ground or zero-potential point would be a major design parameter,
not something that seems to be illusive.
I'm an EMC (electromagnetic compatibility) engineer with Hewlett-Packard,
and in when I review the design of a new printer or plotter, one of the
first things I look for is that some point on the device has been designated
as the zero potential reference. There is certainly a lot of difference
between the HST and one of our plotters, but I would think that the ground
point would be even more important to the HST.
There's probably something here I'm missing. Could you elaborate? Thanks!
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Scott Roleson | Internet: scott%hpsdde@sdd.HP.COM
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| Any opinions are my own, not HP's.
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