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Indian Robot Will Capture Space Debris

CowboyRobot writes "India is set to launch the 'Space Robot', which, controlled from Earth, will capture damaged satellites and space debris. This seems a less ambitious, and more immediately practical venture than the current Mars missions."

18 of 95 comments (clear)

  1. Battlebots by Godeke · · Score: 3, Funny

    While Japan had very advanced Robotic Technology, it lacked the launch vehicle capability. On the other hand the United States had a very advanced Space programme but did not possess Robotic technology, Dr Dayal added.

    Somehow I doubt that the US didn't have the robotic technology... I imagine a seasons worth of battlebots constructors could handle this task.
    The SR will use solar energy to activate its 'wrist' movement and to navigate through space.

    In fact, that confirms it. I think any of the spinner bots would work...
    --
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    1. Re:Battlebots by Midnight+Thunder · · Score: 2, Insightful

      Its probably that the US lacked the incentive. Anyhow we can't tarnish our reputation of not cleaning up behind ourselves.

      --
      Jumpstart the tartan drive.
  2. Short on details, long on possibilities by RobertB-DC · · Score: 4, Insightful

    The 'Space Robot' (SR), with an in-built 'RUDAC' communication signal processor, will be used to capture damaged satellites and space debris from crashing to Earth, CSRDC-CSRL and ISRDO Director Dr M Sreedhar Dayal told UNI.

    Putting aside the poor translation, it's clear that the article's writer doesn't have much of a scientific background. Unless you're talking about a mass comparable to the Compton Gamma Ray Observatory or perhaps the Hubble, there's not much need to prevent debris from "crashing into the earth". 100,000 feet of atmosphere does a fine job by itself, and puts on a great light show to boot.

    The obvious benefit of this space scoop is to clear NEO of the sort of debris that occasionally causes the ISS and the Shuttle to take evasive maneuvers from time to time.

    But I know what I'd be interested in, if I were a developing nation with orbital capability. The space around Earth is turning into the next big salvage yard, especially if the costs of this mission are comparable to a high-profile terrestrial salvage operation. What better way to find out what other nations have been doing in the space above your country, than to grab a few samples of their equipment?

    It's even better than a earthbound salvage operation, because there's no weathering beyond radiation and collisions with other pieces of debris. A defunct spy satellite would be in as good a condition now as it was the day it entered orbit, especially in terms of reverse-engineering. The chips may have a few bits shorted out, but the circuit boards, wiring harnesses, optics, propulsion systems, and so on could hold a trove of information.

    And there's one thing I'm dying to do -- buy space knicknacks. NASA and the Russians could probably fund a significant space program by simply selling off that ton or so of "trash" brought back by each shuttle mission or burnt up in the used Progress craft. If India can bring back space nuts, old thruster bells, and the like, they could make a killing on eBay!

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    1. Re:Short on details, long on possibilities by advocate_one · · Score: 3, Funny
      "If India can bring back space nuts, old thruster bells, and the like, they could make a killing on eBay!"

      There's several spanners loose up there along with a Hassleblad camera...

      --
      Donald 'Duck' Dunn: We had a band powerful enough to turn goat piss into gasoline.
    2. Re:Short on details, long on possibilities by geoswan · · Score: 4, Informative
      May I suggest that it is a mistake to think of India as a "developing country"? I had an Indian friend at University who could be relied on to remind us that, in absolute terms, India's industrial capacity placed it among the dozen or so most industrialized nations on earth.

      Compare the economies of India and Russia. India's GDP was about twice that of Russia's last year. While a higher proportion of Russia's GDP was in its industrialized sector, India's industrialized sector is still larger, in absolute terms.

      There is an old aphorism that inside every fat man there is a thin man screaming to get out. So, remember, India's industrial sector is larger than Russia's.

    3. Re:Short on details, long on possibilities by RobertB-DC · · Score: 2, Insightful

      There's probably a few other options, but for everbodys sake, we should avoid the truth at all costs!

      Isn't that the American Way? :)

      I myself won the "Most Improved Player" award more than once, and it was indeed because I thoroughly sucked before.

      Back in my original posting, many generations ago now, I called India a "Developing" nation. I was taken to task (lightly) for it, but further replies seem to bear out the description. And my flippant reply aside, it's not really such a bad thing to be "Developing".

      In a hundred years or so, historians may look back and decry not the poverty of the "Developing" nations, but the excesses of the "Developed" nations -- just before they became the "Declining" nations.

      --
      Stressed? Me? Of course not. Stress is what a rubber band feels before it breaks, silly.
  3. Really cool! by zulux · · Score: 2, Informative

    There's a theory that if there's enough space-junk that you could develope a chain reaction where one peice of junk shatters another, and really quickly you end up with a bunch of miniscule but deadly debris that will make space exploration almost impossible.

    Thanks India!

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    Moneyed corporations, non-working 'poor' and criminal prisoners are turning productive citizens into tax-slaves.

  4. Heh. by ivan256 · · Score: 4, Interesting

    It's nice to think of this as practical from the perspective of cleaning up space debris, but the real point of this is almost certainly for India to show that they have the ability to take out sattelites they don't like, much like the early Soviet and American sub-orbital flights and sattelite launches were demonstrations that we could drop explosive devices on each other from halfway around the world. Don't assume that something this complex and costly is being done out of the kindness of the Indian government's heard, or for the good of humanity when there's an obvious military benefit; especially considering their current cold war with Pakistan, and the technological escilation in China.

  5. Excellent application of ion engines by G4from128k · · Score: 2, Interesting

    Ion engines would be well suited to this application. Their high specific impulse means they could have the fuel reserves needed to change orbits multiple times to catch debris. Solar power, instead of a nuclear power source, could provide the electricity to run the engine.

    Hmmm... figuring out the optimal set of manuveurs to catch a set of debris objects that are all in different orbits would be very tricky. I guess that would have to be called the Traveling Spaceman Problem.

    --
    Two wrongs don't make a right, but three lefts do.
    1. Re:Excellent application of ion engines by Unknown+Kadath · · Score: 3, Interesting

      Hmmm... figuring out the optimal set of manuveurs to catch a set of debris objects that are all in different orbits would be very tricky.

      I'm picturing it towing a huge red horsehoe magnet on a string, with all kinds of dead satellites stuck to it.

      Really, while it's nice in concept to talk about cleaning up Earth orbit, the real danger is from the bits we can't even find, never mind capture, like paint chips. Sure, they only mass a few grams, but get a few grams travelling at a few km/s in one direction, and a spacecraft travelling a few km/s in the other, then do the math to find out the total kinetic energy of the system. (Hint: KE = 0.5 * m * v^2) Fortunately, space is big, but we're still doing our best to clutter it up, especially in LEO.

      What we need is a satellite with a really big version of one of those pool skimmer thingies.

      -Carolyn

      --
      Like Daddy always said: if you can't dazzle 'em with brilliance, baffle 'em with bullshit.
    2. Re:Excellent application of ion engines by zwanglos · · Score: 4, Interesting

      This doesn't really seem like a good application for ion engines. They are designed more for long distance deep space travel as they build speed very slowly.

      This device will probably have more conventional thruster units that allow for high thrust and greater manueverability - especially if trying to catch objects that are no longer in orbit.

      Here is a comparison of space engine capabilities: Engine Comparisons.

    3. Re:Excellent application of ion engines by RobertB-DC · · Score: 3, Interesting

      This device will probably have more conventional thruster units that allow for high thrust and greater manueverability - especially if trying to catch objects that are no longer in orbit.

      Well, technically, if it's up there, it's "in orbit" around the Earth's center of gravity. It just may be the case that at some point in the object's orbit, the distance to the center of the earth is less than the earth's radius!

      The problem with the low-power ion engine would be conservation of momentum, I'd think (though I'm not any sort of expert). If the craft is moving "forward", and the object it encounters is at the same altitude but moving "backward", capturing the object will cause some sort of change in the momentum of both objects.

      The small object will abruptly begin moving in the opposite direction (unless it punches a hole in yer scoop!), but its kinetic energy (???) will slow down the big object. Just like the atmosphere, thin as it is, exerts a drag on objects in orbit that's proportional to the number of atoms hitting the object (which is proportional to the object's surface area).

      That's when orbital mechanics kicks in. The slower you go, the smaller your orbit. Each "hit" sends the catcher closer to a fiery end, kind of like a celestial Slashdot effect.

      Also, how will the satellite "catch" its targets?You can't just step on the accelerator to catch up to something, because increasing your orbital velocity increases your altitude. To go "up", you have to accelerate forward, to go "down", you have to accelerate backward, and I still don't fully understand what happens when you accelerate in some direction outside your orbital path!

      All this is facinating, but boy, does it make my head spin...

      --
      Stressed? Me? Of course not. Stress is what a rubber band feels before it breaks, silly.
  6. Orbital Debris: Plot of Planet-es Anime/Manga by StCredZero · · Score: 2, Informative

    This sounds like a precursor to Planet-es. It's a very well written anime (even from a Hard Sci-fi POV)

    1. Re:Orbital Debris: Plot of Planet-es Anime/Manga by Bonker · · Score: 2, Interesting

      I was going to bring up Planetes. One of the very few "hard" sci-fi stories I've ever thought was really excellent.

      Main characters are astronauts who collect space debris of various kind for a corporation who does space cargo and passenger flights.

      An entire episode of the anime is devoted to medical issues arising from extended periods in space. One of the minor characters describes herself as a 'Lunarian'. She's a 12-year old girl who's over five feet tall and has very brittle bones and other medical problems. Accordingly, she lives in a hospital and is in medical testing and treatement almost constantly.

      Good stuff. Check it out if you can.

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  7. Re:Indian robot? by theMerovingian · · Score: 2, Interesting

    Maybe they could bring the Hubble back for a 10th the cost.......?

    Even if they only got a 10th of it for us, we could put it in the Smithsonian.

    --
    "If you think you have things under control, you're not going fast enough." --Mario Andretti
  8. This could be a great fiscal venture by E1v!$ · · Score: 3, Interesting

    If the robot could capture the debris, and put it all in some kind of framework, a 'junk warehouse' if you will.. It could be a fantastic way to aquire raw material in orbit without having to pay much of the shipping cost.

  9. Another robot... by geoswan · · Score: 3, Interesting

    Maybe it is worth comparing the design of this robot to the Indian one. It was discussed in this slashdot thread entitled Inspection Microsat Tested In Orbit.

  10. Oh, okay. by Anonymous Coward · · Score: 2, Informative

    spanner n.
    1. A wrench having a hook, hole, or pin at the end for meshing with a related device on another object.
    2. Chiefly British. A wrench.