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Re: pt3 telemetry



Jon:

No, those telemetry values have always worked.
They continue to work.  I just did not know how
accurate they were.  Now I know they are no long
strain gauges but real pressure transducers.

There are probably several possible scenarios
that would account for the leak.  I don't have to
be right in every detail in my beliefs, just to
provide a likely candidate that explains the
observations.  In the end, we will get the sequence
correct when someone that knows more than
we do, tells us the real scoop.

Bob


----- Original Message -----
From: "Jon Ogden" <na9d@mindspring.com>
To: "MCGWIER ROBERT" <rwmcgwier@home.com>
Sent: Friday, January 05, 2001 7:52 PM
Subject: Re: [amsat-bb] pt3 telemetry


> Thanks for the explanation of your possible leak scenario.
>
> While Peter has said that there does appear to be some sort of leak, does
> this information on the tank pressures being correct mean that your leak
> theory is possibly incorrect or partially so?
>
> What if the leak occurred AFTER the failsafe valves.  Perhaps when in
> playing with the propulsion system, those valves were opened and the leak
> occurred thus damaging the spacecraft.  Then with the pressure reducing
due
> to the leak, the valve close preventing further damage.
>
> I have no idea, it's a guess to try to make everything fit.  It's really
an
> uneducated guess and you seem to know a LOT more about this than I do.  In
> fact, you've probably forgotten more about these kind of systems than I'll
> ever know!
>
> No offense, but I hope that your theory is dead wrong!
>
> 73,
>
> Jon
> NA9D
>
> on 1/5/01 4:48 PM, MCGWIER ROBERT at rwmcgwier@home.com wrote:
>
> >
> > ----- Original Message -----
> > From: "MCGWIER ROBERT" <rwmcgwier@home.com>
> > To: "Peter Guelzow" <Peter.Guelzow@arcormail.de>
> > Sent: Friday, January 05, 2001 5:48 PM
> > Subject: Re: [amsat-bb] pt3 telemetry
> >
> >
> >> Thanks for the correction.  That is really good news.
> >> That means the pressures are probably quite accurate.
> >>
> >> 73's
> >> Bob
> >>
> >> ----- Original Message -----
> >> From: "Peter Guelzow" <Peter.Guelzow@arcormail.de>
> >> To: "MCGWIER ROBERT" <rwmcgwier@home.com>
> >> Cc: <amsat-bb@AMSAT.Org>
> >> Sent: Friday, January 05, 2001 12:02 PM
> >> Subject: Re: [amsat-bb] pt3 telemetry
> >>
> >>
> >>> Just a quick note...
> >>>
> >>> There are no strain gauges on the tanks itself.
> >>> The pressures are measured by discrete pressure transducers which
> >>> are part of the PFA module. While such a device could also
> >>> be damaged, it seems to be very unlikely.
> >>>
> >>> 73s Peter
> >>>
> >>>
> >>
> >>
> >
> > ----
> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>
>
> -------------------------------------
> Jon Ogden
> NA9D (ex: KE9NA)
>
> Member:  ARRL, AMSAT, DXCC, NRA
>
> http://www.qsl.net/ke9na
>
> "A life lived in fear is a life half lived."
>
>

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