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Ulysses Spacecraft Not Dead Yet
Posted by
kdawson
on Sat Jul 12, 2008 05:43 PM
from the it's-chilly-out-there dept.
from the it's-chilly-out-there dept.
iminplaya sends in the good news that reports of the death of the Ulysses mission are premature. (We've discussed the impending shutdown of the 17-year-old mission a couple of times this year.) Ulysses is a joint NASA / ESA mission to study the sun from an orbit inclined almost 90 degrees from the ecliptic. From the Planetary Society blog post: "Ulysses is not dead yet. ESA issued a statement in February saying that, as Ulysses' radioisotope thermoelectric generators were running out of power, the spacecraft would likely die some time this year. The actual death blow to the spacecraft was likely to be the freezing of hydrazine fuel in a cold spot in a fuel line. Mission controllers found creative ways to prevent the freezing, but the solution was not a long-term one, and ESA had a ceremonial send-off and wrap-up of the mission in mid-June, announcing that the spacecraft would be shut down on July 1. However, it now appears that announcement was premature. ESA issued a statement on July 3 titled 'Ulysses hanging on valiantly.' And on Wednesday, the [Ulysses mission operations manager indicated] that Ulysses' voyage could actually continue for some time."
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Dusty writes "After several false alarms, the Ulysses Mission is finally ending. According to the Spacecraft Operations Manager's latest status report, the last track will be on 30th June 2009 from 15:25 until 20:20 UTC. 'We've tried to bolster our dwindling tracking allocation with some success
by grabbing antenna time released on short notice (mostly by the Spitzer Project). However, weekly data return figures are now typically 10% or less. And soon, even 512 bps from 70m antennas will be a thing of the past.'
Further details about Ulysses' 18-year mission are available from NASA and the ESA. We discussed the failing spacecraft last summer when it looked like its fuel was going to freeze, but through clever engineering, experts managed to squeeze out another year.
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Of course it's not dead ... (Score:3, Funny)
At least not until Netcraft confirms it.
And maybe not even then ...
Re: (Score:2)
Not dead [wikipedia.org]. Just takes way too long to read and interpret.
Re:Of course it's not dead ... (Score:5, Funny)
I'll tell you what's wrong with it, my lad. 'E's dead, that's what's wrong with it!
No, no, 'e's uh,...he's resting.
Look, matey, I know a dead spacecraft when I see one, and I'm looking at one right now.
No no he's not dead, he's, he's restin'! Remarkable ship, the Ulysses, idn'it, ay? Beautiful solar collectors!
The solar collectors don't enter into it. It's stone dead.
Nononono, no, no! 'E's resting!
All right then, if he's restin', I'll wake him up! (shouting at the cage) 'Ello, Mister Ulysses! I've got a lovely fresh battery for you if you show...(owner hits the retros)
There, he moved!
No, he didn't, that was you hitting the retros!
I never!!
Yes, you did!
I never, never did anything...
(yelling) 'ELLO ULYSSES!!!!! Testing! Testing! Testing! Testing! This is your nine o'clock alarm call!
Parent
Re:Of course it's not dead ... (Score:4, Funny)
probably pining for the fjords.
And now...
http://www.mwscomp.com/movies/grail/grail-02.htm [mwscomp.com]
Parent
Of Course Ulysses' Not Dead! (Score:5, Funny)
It'll probably return after twenty years or so, Poseidon be damned!
Re:Of Course Ulysses' Not Dead! (Score:5, Interesting)
An appropriate poem [utoronto.ca] for a dieing spacecraft.
Come, my friends,
'T is not too late to seek a newer world.
Push off, and sitting well in order smite
The sounding furrows; for my purpose holds
To sail beyond the sunset, and the baths
Of all the western stars, until I die.
It may be that the gulfs will wash us down:
It may be we shall touch the Happy Isles,
And see the great Achilles, whom we knew.
Tho' much is taken, much abides; and tho'
We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
Parent
It's a rewrite of the original by Dante (Score:3, Interesting)
Written over 700 years ago and still brilliant. This is just a small extract:
"O frati", dissi "che per cento milia
perigli siete giunti a l'occidente,
a questa tanto picciola vigilia
d'i nostri sensi ch'è del rimanente,
non vogliate negar l'esperienza,
di retro al sol, del mondo sanza gente.
Considerate la vostra semenza:
fatti non foste a viver come bruti,
ma per seguir virtute e canoscenza''.
Li miei compagni fec'io sì aguti,
con questa orazion picciola, al cammin
Of Course Ulysses's Dead! (Score:3, Funny)
Ulysses S. Grant died at 8:06 a.m. on Thursday, July 23, 1885, at the age of 63 in Mount McGregor, Saratoga County, New York. His last word was a request, "Hydrazine."
Re: (Score:3, Interesting)
Well, to be fair, Odysseus was a general of sorts too. :-)
Tales of Brave Ulysses (Score:3, Insightful)
You thought the leaden winter would bring you down forever,
But you rode upon a steamer to the violence of the sun.
And the colors of the sea blind your eyes with trembling mermaids,
And you touch the distant beaches with tales of brave Ulysses:
How his naked ears were tortured by the sirens sweetly singing,
For the sparkling waves are calling you to kiss their white laced lips.
And you see a girl's brown body dancing through the turquoise,
And her footprints make you follow where the sky loves the sea.
And when your fingers find her, she drowns you in her body,
Carving deep blue ripples in the tissues of your mind.
The tiny purple fishes run laughing through your fingers,
And you want to take her with you to the hard land of the winter.
Her name is Aphrodite and she rides a crimson shell,
And you know you cannot leave her for you touched the distant sands
With tales of brave Ulysses; how his naked ears were tortured
By the sirens sweetly singing.
The tiny purple fishes run lauging through your fingers,
And you want to take her with you to the hard land of the winter.
today's NASA kids could learn from this. (Score:5, Interesting)
Re: (Score:3, Interesting)
How do the inflation-adjusted costs of previous missions compare to current mission costs?
Re: (Score:3, Informative)
ESA says [esa.int] the total cost of Ulysses has been about 1 billion Euro, which is about $1.5 billion US. Might want to try a different example.
Re:today's NASA kids could learn from this. (Score:5, Insightful)
that's bargin basement space exploration. it's the perfect example, thank you very much.
Parent
Re:today's NASA kids could learn from this. (Score:5, Insightful)
a) Ulysses has cost over a billion.
b) NASA has had spacecraft which have lasted longer than anyone thought they would. The current Mars rovers for example, and Mars Pathfinder, as well as the Galileo spacecraft, which had at least 4 extended missions. Not to mention the Voyagers. The correlation between cost and the lifetime of the craft is not coincidental.
c) Having a mission that lasts a long time is not indicative of a well thought out mission. I think if any agency is going to blow 1 billion on a mission, they're going to think it out pretty damn well. Imagine the public backlash if it weren't thought out (i.e. Mars Polar Lander)...
Parent
Re:today's NASA kids could learn from this. (Score:5, Insightful)
Well there's a tagline: "Lack of funding, kills stuff faster then outer space". I reckon the military might even pay to turn that into a weapon.
Parent
Ulysses Spacecraft Not Dead Yet (Score:3, Funny)
Hmm, that reminded me of this movie [youtube.com]...
Ejection from the solar system? (Score:5, Interesting)
Re: (Score:3, Informative)
You think it's like turning your car to make a left hand turn of something?!
Momentum... look it up.
Thank you (Score:5, Funny)
Thank you for telling people their idea is stupid. Sometimes they need it, the uneducated louts.
Now, I think NASA is overlooking a completely obvious and fooldproof solution. Problem: they have frozen pipes. They're also near the Sun. A quick flyby of the sun for some warmth, and they're good to go! However, if I remember my science classes correctly, they have to keep the pass under a certain speed, or they run into problems with humpback whales.
Parent
Re:Thank you (Score:4, Funny)
Nonsense, they merely have to keep it going at least 50mph, otherwise a crazed biker will blow it up.
Parent
Re: (Score:3, Insightful)
How do you plan to arrange that close encounter when its current orbit takes it nowhere near Jupiter, genius?
Re: (Score:3, Funny)
How do you plan to arrange that close encounter when its current orbit takes it nowhere near Jupiter, genius?
Move Jupiter then. Mohammed, mountain, mountain, Mohammed. Think outside the box sometime, genius. :)
Re: (Score:3, Informative)
Ulysses will get near Jupiter eventually. Maybe if instead of stating that "its current orbit takes it nowhere near Jupiter" you had tried to prove it by posting orbital elements, you would have seen the flaw in your thinking.
"Eventually" isn't going to help any, if by that time the RTG is cooled down enough so that the hydrazine has frozen to a solid so that the craft can't be manuevered for the fly-by. That would be the flaw in your thinking.
Re:End idea (Score:5, Informative)
If it had enough left for that sort of maneuver, it wouldn't be in trouble. Of course, it never had enough fuel to do that. It had just enough to reach a Juipiter fly-by in order to get into a near polar orbit of the Sun.
Parent