Goodbye, Galileo
Bill Higgins
an hour, Earth will notice that the signal has disappeared.
So long, Galileo Orbiter. I had some good times watching your journey.
Many thanks to all the people who built and operated you, and brought us
your science.
--
Bill Higgins
Fermilab
hig...@fnal.gov
uray
news:Pine.SGI.4.31.0309211...@fsgi01.fnal.gov...
> The Spacecraft Elapsed Time countdown clock has reached zero. In less
than
> an hour, Earth will notice that the signal has disappeared.
>
> So long, Galileo Orbiter. I had some good times watching your journey.
> Many thanks to all the people who built and operated you, and brought us
> your science.
Last message received "HGA is now free"
:-)
Andrew Gray
> The Spacecraft Elapsed Time countdown clock has reached zero. In less than
> an hour, Earth will notice that the signal has disappeared.
>
> So long, Galileo Orbiter. I had some good times watching your journey.
> Many thanks to all the people who built and operated you, and brought us
> your science.
Indeed. Here's hoping Cassini does half as well...
--
-Andrew Gray
shim...@bigfoot.com
Pat Flannery
Andrew Gray wrote:
>Indeed. Here's hoping Cassini does half as well...
>
>
>
Due to the fact that it has a non-folding transmitter/reciever dish, it
should do far better. Live and learn.
Pat
Henry Spencer
And sometimes you learn the right things, and sometimes you learn the
wrong things. :-) Cassini would be better off with a deployable antenna.
The umbrella-antenna technology has a long history of successful use, e.g.
on TDRS. The Galileo HGA disaster was (probably) a mistake in the details
of how the technology was applied, not an indication that the technology
is fundamentally flawed. (And had Galileo been launched using
Shuttle-Centaur as originally planned, the antenna would have been
opened before separation from the shuttle...)
--
MOST launched 1015 EDT 30 June, separated 1046, | Henry Spencer
first ground-station pass 1651, all nominal! | he...@spsystems.net
Hallerb
>Shuttle-Centaur as originally planned, the antenna would have been
>opened before separation from the shuttle...)
Multiple coss country truck trips wasnt good either.
Michael R. Grabois ... change $ to "s"
"All these worlds are yours except Europa. Attempt no landings there."
Pat Flannery
Henry Spencer wrote:
>The umbrella-antenna technology has a long history of successful use, e.g.
>on TDRS. The Galileo HGA disaster was (probably) a mistake in the details
>of how the technology was applied, not an indication that the technology
>is fundamentally flawed. (And had Galileo been launched using
>Shuttle-Centaur as originally planned, the antenna would have been
>opened before separation from the shuttle...)
>
>
I don't have any problem with folding antennas, it was just a shame
that a titanium pin failing to move properly compromised the mission.
The problem was mainly due to the rushed redesign of the spacecraft
after the Shuttle/Centaur idea got scrapped- which was too bad, as the
great stuff we got from Galileo even with the vastly reduced data
transmission rate gives some glimmer of what a fully operational
spacecraft could have accomplished. Unfortunately, orbital mechanics
meant that the redesign had to be done on a tight schedule, and things
had to be redesigned on an already finished spacecraft to fit it to its
new mission profile and launch method.
Oh well, here's hoping for some really spectacular shots of THE ring
system of the solar system, and some great stuff from Titan.
Pat
Pat Flannery
Michael R. Grabois ... change $ to \"s\" wrote:
>
>"All these worlds are yours except Europa. Attempt no landings there."
>
>
>
Giant floating Jovian "Windbag" creature: "The pizza's here! But watch
it, the damn thing's hot! Kligano, I thought I specifically said NO
RADIOISOTOPES...they give me gas.....now don't get smart-alecky- you'll
get Radon outgassing someday, and then you'll know what I have to put up
with; you larval forms have it SO easy- your mother and I can remember
when Venus came flying out of that red spot right over there...have you
cleaned up your cloud lately? No, of course you haven't! Neither did
Flagatror....and you remember what happened to him? That's right, a
comet fell on him- so you remember that, young larva, you just remember
that. DON'T YOU STICK YOUR TENTACLES OUT AT ME! "
Pat
OM
"All your moon are ours."
OM
--
"No bastard ever won a war by dying for | http://www.io.com/~o_m
his country. He won it by making the other | Sergeant-At-Arms
poor dumb bastard die for his country." | Human O-Ring Society
- General George S. Patton, Jr
Doug...
hig...@fnal.gov says...
> The Spacecraft Elapsed Time countdown clock has reached zero. In less than
> an hour, Earth will notice that the signal has disappeared.
>
> So long, Galileo Orbiter. I had some good times watching your journey.
> Many thanks to all the people who built and operated you, and brought us
> your science.
Farewell, Galileo, and we thank you.
--
Do not meddle in the affairs of dragons, for | Doug Van Dorn
thou art crunchy and taste good with ketchup | dvan...@mn.rr.com
Peter Smith
"OM" <om@our_blessed_lady_mary_of_the_holy_NASA_research_facility.org>
wrote...
>
> "All your moon are ours."
>
Or,
"All your moon are belong to us."
:)
- Peter
Diane Wilson
dvan...@mn.rr.com says...
> In article <Pine.SGI.4.31.0309211...@fsgi01.fnal.gov>,
> hig...@fnal.gov says...
> > The Spacecraft Elapsed Time countdown clock has reached zero. In less than
> > an hour, Earth will notice that the signal has disappeared.
> >
> > So long, Galileo Orbiter. I had some good times watching your journey.
> > Many thanks to all the people who built and operated you, and brought us
> > your science.
>
> Farewell, Galileo, and we thank you.
>
>
David Lesher
>Farewell, Galileo, and we thank you.
and thanks for all the fish...
--
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
Jonathan Silverlight
<fla...@daktel.com> writes
>
>
>Michael R. Grabois ... change $ to \"s\" wrote:
>
>>
>>"All these worlds are yours except Europa. Attempt no landings there."
>>
>>
>Giant floating Jovian "Windbag" creature: "The pizza's here! But watch
>it, the damn thing's hot!
Brilliant, as always.
I hope someone writes a serious (or not) short story on this theme, like
"A Song for Skyfall" that came out after SL-9.
We are dropping things on these hypothetical aliens they've never seen
before - refined metals, shaped parts, isotopes. We are doing what the
aliens did for us in "2001".
--
"Forty millions of miles it was from us, more than forty millions of miles of
void"
Remove spam and invalid from address to reply.
Jonathan Silverlight
<he...@spsystems.net> writes
>In article <3F6E0BA1...@daktel.com>,
>Pat Flannery <fla...@daktel.com> wrote:
>>>Indeed. Here's hoping Cassini does half as well...
>>
>>Due to the fact that it has a non-folding transmitter/reciever dish, it
>>should do far better. Live and learn.
>
>And sometimes you learn the right things, and sometimes you learn the
>wrong things. :-) Cassini would be better off with a deployable antenna.
>
>The umbrella-antenna technology has a long history of successful use, e.g.
>on TDRS. The Galileo HGA disaster was (probably) a mistake in the details
>of how the technology was applied, not an indication that the technology
>is fundamentally flawed. (And had Galileo been launched using
>Shuttle-Centaur as originally planned, the antenna would have been
>opened before separation from the shuttle...)
How does that work? The antenna wasn't exactly strong, though it was
presumably stronger than the motor :-( What sort of jolt does it get
when the engine fires?
And just to add another question (sorry everyone) wasn't there some
concern that the same type of antenna was used in other satellites (TDRS
??)
They certainly knew the antenna was absolutely critical to the mission.
Anyway, farewell and well done.
Greg D. Moore (Strider)
"Diane Wilson" <di...@firelily.com> wrote in message
news:MPG.19d8caf7e...@news.newsguy.com...
Godspeed Galileo
Henry Spencer
Jonathan Silverlight <jsilve...@spam.merseia.fsnet.co.uk.invalid> wrote:
>>The umbrella-antenna technology has a long history of successful use, e.g.
>>on TDRS. The Galileo HGA disaster was (probably) a mistake in the details
>>of how the technology was applied, not an indication that the technology
>>is fundamentally flawed. (And had Galileo been launched using
>>Shuttle-Centaur as originally planned, the antenna would have been
>>opened before separation from the shuttle...)
>
>How does that work? The antenna wasn't exactly strong, though it was
>presumably stronger than the motor :-( What sort of jolt does it get
>when the engine fires?
Not very much on a Centaur, which does not have terribly high
acceleration. The fully deployed antenna is reasonably strong, and
it is so light that the acceleration does not induce large forces.
>And just to add another question (sorry everyone) wasn't there some
>concern that the same type of antenna was used in other satellites (TDRS
>??)
There was indeed, but since it invariably worked fine on TDRS, the
conclusion was that the problem was *probably* something unique to
Galileo. The prime suspect is redistribution of lubricant due to
vibration from all the traveling Galileo did while awaiting launch,
but nobody can be really sure.
Kevin Willoughby
stel...@NOSPAMPLEASE.erols.com says...
> uray wrote:
> > Last message received "HGA is now free"
>
So, does this mean the Galileo attitude guidence computer has, after
20+ years, finally crashed?
:-)
--
Kevin Willoughby ke...@scispace.org.invalid
Imagine that, a FROG ON-OFF switch, hardly the work
for test pilots. -- Mike Collins