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Ulysses Spacecraft Not Dead Yet

Posted by kdawson on Saturday July 12, @05:43PM
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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[+] Ulysses Spacecraft on its Last Legs 121 comments
doconnor writes "JPL announced that Ulysses' mission will be ending after 17 years. The power generated by the decay of a radioactive isotope has been slowly decreasing. To conserve power its main transmitter was shut off. Unfortunately due to a fault in its power supply it cannot be turned back on. The team plans to continue operating the spacecraft in its reduced capacity, using the alternate S-band transmitter, for as long as they can over the next few weeks." Congratulations to all the geniuses involved in this one.
[+] Groundbreaking Solar Mission Faces Chilly Death 134 comments
iamlucky13 writes "Over 17 years ago, the Ulysses spacecraft was launched aboard the space shuttle Discovery for a unique NASA/ESA mission. While nearly all other probes travel along our solar system's ecliptic plane, Ulysses used a Jupiter gravity assist to swing 80 degrees out of plane, carrying it over the sun's poles for an unprecedented view. During a mission that lasted four times longer than planned, it has flown through the tails of several comets, helped pinpoint distant gamma-ray bursts, and provided data on the sun and its heliosphere from the better part of two solar cycles. Unfortunately, the natural reduction of power from its radioisotope thermal generator means it is now unable to even keep its attitude control fuel from freezing, and NASA has decided to formally conclude the mission on July 1."
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  • At least not until Netcraft confirms it.

    And maybe not even then ...

    • Not dead [wikipedia.org]. Just takes way too long to read and interpret.

      • by $RANDOMLUSER (804576) on Saturday July 12, @06:24PM (#24167167)

        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!

  • by morari (1080535) on Saturday July 12, @05:50PM (#24166921) Journal

    It'll probably return after twenty years or so, Poseidon be damned!

    • by Anonymous Coward on Saturday July 12, @06:15PM (#24167119)

      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.

      • Dante, Inferno, Canto 26

        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

    • 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."

  • by Anonymous Coward on Saturday July 12, @05:58PM (#24166975)

    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.

  • by timmarhy (659436) on Saturday July 12, @06:14PM (#24167109)
    You don't need billion dollar budget programs to achieve amazing science, low cost well thought out missions can do great things. maybe it's the thinking part that has them stumped.
  • by K. S. Kyosuke (729550) on Saturday July 12, @07:27PM (#24167555)

    Ulysses Spacecraft Not Dead Yet

    Hmm, that reminded me of this movie [youtube.com]...

  • The blog article at the Planetary Society website says that Ulysses will encounter Jupiter and be ejected from the solar system. Is this a theoretical possibility, or has a date for this been determined? Ulysses originally encountered Jupiter to fling it out of the ecliptic plane so it could study the sun at high latitudes. Its aphelion is still at Jupiter's orbit. If it encounters Jupiter again, any number of things could happen to it. The statement about it being ejected seems to imply that a specific encounter trajectory is already predicted.
    • Re: (Score:3, Informative)

      by Anonymous Coward
      Oh for fuck's sake, for the last time on /. IT CAN'T BE DONE.

      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)

        by gerf (532474) <edtgerf@gmail.com> on Saturday July 12, @07:47PM (#24167685) Journal

        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.

        • How do you plan to arrange that close encounter when its current orbit takes it nowhere near Jupiter, genius?

          • 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)

      by sjames (1099) on Saturday July 12, @06:18PM (#24167139) Homepage

      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.