Slashdot Mirror


NASA Will Intentionally Burn Unmanned Orbiting Craft In Space (phys.org)

An anonymous reader writes from an article on Phys.org: NASA said it will test the effects of a large fire in space by setting off a blaze inside an orbiting unmanned space craft. NASA has set off tiny controlled fires in space in the past, but never tested how large flames react inside a space capsule in space. The goal is to measure the size of the flames, how quickly they spread, the heat output, and how much gas is emitted. The results of this experiment, dubbed Saffire-1, will determine how much fire resistance is needed in the ultra-light material used in the spacecraft and the astronaut's gear. It will also help NASA build better fire detection and suppression systems for their spaceships, and study how microgravity and limited amounts of oxygen affect the size of the flames.

81 comments

  1. Btrn in soace by rossdee · · Score: 0

    wheres the oxygen?

    1. Re:Btrn in soace by Harlequin80 · · Score: 1

      Inside the craft....

      They will be simulating a manned atmosphere inside the craft before igniting it.

    2. Re:Btrn in soace by SJHillman · · Score: 3, Funny

      They invented a whole new concept called the "inside". This craft will be equipped with one such feature. It will contain oxygen.

    3. Re:Btrn in soace by 93+Escort+Wagon · · Score: 1

      Haven't you seen Star Wars? Just because you're in a vacuum doesn't mean you can't have huge fireballs and thunderous explosions.

      --
      #DeleteChrome
    4. Re:Btrn in soace by Skewray · · Score: 5, Interesting

      I spent a year or so working on fire detection for the Orion project, which was, at the time, sending folks to the moon. Fire in space is an incredibly arcane subject, with almost nothing known. On Earth, convection is everything, but in space, there is no gravity to drive convection. In other words, hot air doesn't rise. So flames do really weird, unexpected, unintuitive things.

    5. Re:Btrn in soace by Harlequin80 · · Score: 2

      I actually think you could have some really really cool looking massive fireballs in space. If you have a flammable mixture being ejected from a central point and ignition starts from the centre point fractionally after the start of the ejection you would have two expanding fronts. The first would be what ever the flammable mix is, the second is the ignition front chasing it. While the mixture remains dense enough for ignition to spread it would look really really cool.

      Obviously flammable mix in a vacuum would require oxygen in some form. I wonder what burning potassium Chlorate would look like in space.

    6. Re:Btrn in soace by Harlequin80 · · Score: 1

      Now that's a claim not many people can make!

      I've read a bit about how it behaves in the past and looked at some amazing videos. Everything I saw had almost no visible flame. I really wonder what the heat signature would be like as it doesn't look concentrated at all.

    7. Re:Btrn in soace by MrKaos · · Score: 3, Funny

      Fire and balls are two words you don't want to be used in a sentence describing your pants.

      --
      My ism, it's full of beliefs.
    8. Re:Btrn in soace by BarbaraHudson · · Score: 1

      Not when internal over-pressure pops the seams (just look at how quickly the Apollo 1 fire happened).

      --
      "Transparent" is a shit show that trades on every stereotype going. A man in drag is NOT a transsexual.
    9. Re:Btrn in soace by BarbaraHudson · · Score: 1

      Fire and balls are two words you don't want to be used in a sentence describing your pants.

      Jack nimble, jack be quick,
      Jack jump over the candle stick
      Goodness gracious, great balls of fire.

      --
      "Transparent" is a shit show that trades on every stereotype going. A man in drag is NOT a transsexual.
    10. Re:Btrn in soace by Anonymous Coward · · Score: 0

      I don't care. NASA is setting a satellite ablaze. That is awesome. That is all. You may now return to your regularly scheduled program. I'm going to dream about torching a satellite. They should play an audio track that makes sounds like an alien screaming in pain, just to fuck with people. April Fools is coming up...

      Anyhow, I ran out of posts. So, I am an AC. Yay? Go me? Ah well... 'Tis KGIII

    11. Re:Btrn in soace by ctrl-alt-canc · · Score: 1

      > Btrn in soace
      and where is your spell checker ? ;-)

    12. Re:Btrn in soace by Anonymous Coward · · Score: 0

      "but in space, there is no gravity "

      Really? So what's keeping the Earth in free fall around the Sun? This is an alarming claim!

    13. Re:Btrn in soace by Anonymous Coward · · Score: 0

      Fine, there is insufficient gravity to produce the same convection you would have on earth.

      I bet you are a blast at parties.

    14. Re:Btrn in soace by JoeMerchant · · Score: 2

      I'd expect "gravity free" flames to be more chaotic / less predictable... I wonder how many times they'll have to burn the capsule before they get a representative sample.

    15. Re:Btrn in soace by Anonymous Coward · · Score: 0

      In Low Earth Orbit, gravity is 95% of surface gravity.

    16. Re:Btrn in soace by k6mfw · · Score: 1

      Fire in space is an incredibly arcane subject, with almost nothing known.

      and probably something that needs extensive study, earthbound building fires have been mitigated (read some magazines by Society of Fire Protection Engineers) but many lessons were learned the hard way throughout the decades. But asking for fire experiments on ISS surely makes everyone cringe as extensive measures must be used to keep it well contained. Problem is need to do experiments to see when fire gets out of control (i.e. take a couch with smoldering cigarette and video all the way to fully engulfed building, see what happens in the process). Maybe rig some Progress vehicles after delivering supplies to do fire experiments?

      --
      mfwright@batnet.com
    17. Re:Btrn in soace by k6mfw · · Score: 1

      besides the huge fireballs in space, why is that everyone with spacecraft capable of superluminal flight over interstellar distances engage in combat at close range like naval battleships?

      --
      mfwright@batnet.com
    18. Re:Btrn in soace by Anonymous Coward · · Score: 0

      This is irrelevant to bodies in free fall.

    19. Re:Btrn in soace by MrKaos · · Score: 1

      That shook my nerves and it rattled my brain.

      --
      My ism, it's full of beliefs.
    20. Re:Btrn in soace by Anonymous Coward · · Score: 0

      Gravity in orbit, just not weight, because you're not accelerating like you are when standing on Earth. Acceleration is always relative to your curved space time. When in free fall around the Earth, aka orbit, your trajectory through space time is a strait line with no deviation, meaning no acceleration.

  2. Great by Anonymous Coward · · Score: 0

    We are now intentionally polluting space.

    1. Re:Great by Deadstick · · Score: 1

      Ummm, you're aware that our atmosphere touches space, right?

    2. Re:Great by Anonymous Coward · · Score: 0

      That failed to be funny. Hard.

    3. Re:Great by FatdogHaiku · · Score: 1

      We are now intentionally polluting space.

      Now?
      http://pics-about-space.com/nasa-space-junk?p=1

      --
      You have the right to remain sentient. If you give up the right to remain sentient, you will be elected to public office
    4. Re:Great by dsmatthews9379 · · Score: 1

      Last time I checked 100% of the junk in orbit got there intentionally, including a lot of nuclear reactors and stuff you should actually care about.

    5. Re:Great by pollarda · · Score: 1

      Yea. But there is a big bag made of cheese cloth holding the atmosphere inside.

    6. Re:Great by Anonymous Coward · · Score: 2, Interesting

      We set a nuke off in space.

      Seriously...

      You might not know about it so I'll share it:
      https://en.wikipedia.org/wiki/...

      The thing is - they had no fucking idea what it would do, not really. They had some guesses and one guy's theory.

      We trashed 7 satellites - some of them not belonging to us, in 1962. Yup... We nuked mother-fucking space, not knowing, based on a scientific guess (that there'd be belts, now known as Van Allan belts I believe), and might have ignited the fucking atmosphere.

      The world was PISSED. I mean right fucking pissed. This was in the heart of the Cold War. The USSR was fucking livid. The UK's first satellite? Guess what happened to that... Yeah, it mysteriously stopped working not long after. It was awesome. I was only like five when it happened and even I remember hearing about it. I don't remember if it was then that I remember hearing about it. I might have been older. I didn't see it or anything like that. It's not like they could keep that a secret. No, no... It was pretty noticeable. Someone's gonna notice if you set of a nuke in space.

      So, guess what we did after that? We blowed a few more up real good-like. I believe the USSR had a go at it afterwards. At some point, people thought about it and said that it was probably best that we stop attacking space. They were starting to worry that it might be a problem.

      I am not kidding. When it goes off - the fireball actually gets larger as it approaches the ground - some of it comes towards the atmosphere, plus it's not truly weightless, it's just really low weight. They had no idea if it was gonna scorch the Earth because they had no idea how long it would keep growing larger - but they had a reasonable guess, it turned out to be right and Van Allen got his data (which was kind of the excuse, as I recall). They named shit after him but I'm not an astronomer or astronomical physics student so I'll be damned if you'll get a good explanation from me if you want details. But, it was generally considered a good idea at the time by the powers that be.

      A certain subset, namely those not in power, were pretty sure that everyone had gone insane. You think you hate your government now? Oh my... No, not at all. Imagine a government that will try to attack space, just to show they can do it. They killed satellites that don't belong to us. The UK's very first satellite, a matter of national fucking pride, was a friendly fire incident when the US decided it wasn't to detonate a nuclear bomb... in space... That they weren't sure if it would irradiate the planet in new and horrible ways... And they then decided that wasn't good enough and proceeded to scale that son of a bitch up ever larger. And you're having a hard time accepting Trump or Hillary, aren't you?

      KGIII as an AC.

    7. Re:Great by Harlequin80 · · Score: 3, Interesting

      More like the US has set off 10 high altitude nuclear bombs. It just depends on which ones you want to count as space. Starfish Prime was not the furthest out either, one of the earlier ones was at 570km as opposed to the 400km of starfish. That said starfish was a 1.4Mt bomb so it made the biggest impact.

      One of the soviet ones managed to push out an EMP measuring in the thousands of amps. It melted hundreds of kms of telephone and power lines and caused a power station to burn to the ground. It went off at about 290km.

    8. Re:Great by tehcyder · · Score: 1

      More like the US has set off 10 high altitude nuclear bombs. It just depends on which ones you want to count as space

      If they took out an orbiting satellite, I'd say that counted as space.

      --
      To have a right to do a thing is not at all the same as to be right in doing it
    9. Re: Great by WindBourne · · Score: 1

      Gill, why do you claim that the world was pissed. Much of the govs did not know, and the ones that knew were split due to cold war?

      --
      I prefer the "u" in honour as it seems to be missing these days.
    10. Re:Great by Harlequin80 · · Score: 1

      No question Starfish Prime was space. But there were 10 high altitude detonations. However some of those are under the 70 or 100km altitude that people count as space, so of the 10 high altitudes how many you would count as space depends on your definition. Altitudes are 26, 76, 43, 200, 240, 540, 50, 400, 147, 97km.

      You would easily count 5 of them as space, the other 5 maybe not.

    11. Re:Great by Anonymous Coward · · Score: 0

      The scientists of the Manhattan project figured out that we couldn't set the atmosphere on fire long before the Trinity Test. I don't know where this idea of nuclear scientists taking risks about that sort of thing took root, but it is completely false.

    12. Re: Great by KGIII · · Score: 1

      They couldn't not know. Do you have any idea what that did to the sky? There were brilliant Auroras that lasted for ages, a giant friggen fireball visible from thousands of miles away, and then light continuing to spread from there, lighting up areas across the globe but not directly - it made the dark sky light(er).

      There was no hiding this one. There were others that were higher and others that were lower. Some could be seen, some not so easily noticed with the tech they had back then. They still had planes with radiation detectors and they all spied on each other worse than they ever do today. This was something like 1962. The whole world knew about it - they announced the scientific discovery at one point. Not long after.

      --
      "So long and thanks for all the fish."
    13. Re:Great by Anonymous Coward · · Score: 0

      Read the link. There's a reason that it was the discovery of the Van Allen Belt.

  3. Where have we heard this? by rmdingler · · Score: 4, Funny

    The goal is to measure the size of the flames, how quickly they spread, the heat output, and how much gas is emitted.

    Said every pyro ever.

    --
    Happiness in intelligent people is the rarest thing I know.

    Ernest Hemingway

    1. Re:Where have we heard this? by Anonymous Coward · · Score: 0

      They only spread based on other material to burn, the oxygen required for the fire (at minimum) is known. That can be tested on earth.

    2. Re:Where have we heard this? by Anonymous Coward · · Score: 4, Insightful

      Hint: "Hot air rises" looks very different in zero-G.

    3. Re:Where have we heard this? by rmdingler · · Score: 1
      I don't know. It sounds weird to an earthling, right?

      If they said, "We are going to build and then burn a house in Scotland for you!", you might consider that a tad excessive in evaluating your safety in the event of a future emergency with an infinitesimal chance of occurring.

      But. If it's space travel and long term habitation, FFS, I say err on the side of caution.

      --
      Happiness in intelligent people is the rarest thing I know.

      Ernest Hemingway

    4. Re:Where have we heard this? by BarbaraHudson · · Score: 2

      Fire departments regularly burn old abandoned homes in controlled fires. great teaching aid.

      --
      "Transparent" is a shit show that trades on every stereotype going. A man in drag is NOT a transsexual.
    5. Re:Where have we heard this? by Anonymous Coward · · Score: 0

      At least, they HOPE it's unmanned. Oops.

    6. Re:Where have we heard this? by Anonymous Coward · · Score: 0

      It's not like this is gonna be the first time NASA has set something ablaze in a blinding fireball of doom. They've kind of got a history of putting people in confined spaces, mixing in some O2 of varied volume, pressure, and purity levels only to set it alight and record the results. So, it's not like they're inexperienced at this or anything.

    7. Re:Where have we heard this? by evilbessie · · Score: 1

      Yes, but appending 'space' to 'pyro' makes this perfectly reasonable and a good thing. Don't the old supply ships contain trash, so basically they are just dropping a burning ball of trash at Earth, friendly. But space-pyro.

    8. Re:Where have we heard this? by Schmorgluck · · Score: 1

      That's what was happening on the famous "Disaster Girl" photo.

      --
      There's nothing like $HOME
    9. Re:Where have we heard this? by tehcyder · · Score: 1

      It's not like this is gonna be the first time NASA has set something ablaze in a blinding fireball of doom. They've kind of got a history of putting people in confined spaces, mixing in some O2 of varied volume, pressure, and purity levels only to set it alight and record the results. So, it's not like they're inexperienced at this or anything.

      Too soon?

      --
      To have a right to do a thing is not at all the same as to be right in doing it
  4. That's a loop by Anonymous Coward · · Score: 0

    Burning an orbiting spacecraft inside an orbiting spacecraft?

    I mean, I get the idea of needing to provide oxygen to the fire, however... why not just create a capsule to burn whatever it is you want burned and make the shell strong enough to withstand the burn temperature of whatever it is you want burned? Then supply oxygen through a hose of the same material that can withstand the burn temp?

    Isn't that pretty damn simple, how can NASA not understand that.

    There's no how flames react, because the material being burned is at a certain temperature and the shell encasing the fire can withstand a certain temperature. Surely they are not that ignorant.

    There's no reality to limited amounts of oxygen, it's an exact amount as to how much is needed to make the material inside ignite.

    That really seems like it was not written per math, it seems like someone who was high wrote it.

    Maybe they need to employ people differently.

    1. Re:That's a loop by Teancum · · Score: 1

      Burning an orbiting spacecraft inside an orbiting spacecraft?

      You are missing something here. It is simply the orbiting spacecraft.... catching fire on the inside of that same spacecraft.... in space!

      It is like a Beowulf Cluster of Linux servers........ in space!

      That is why this is so impressive..... in space!

  5. Sounds Great by Anonymous Coward · · Score: 2, Insightful

    This sounds like one of the more useful things I've ever heard nasa do.

    1. Re:Sounds Great by Anonymous Coward · · Score: 0

      It's unusual to hear such a vacuous comment coming from an anonymous coward.

    2. Re:Sounds Great by Anonymous Coward · · Score: 0

      Thin down the irony there, sweetie.

  6. Pinto's by Anonymous Coward · · Score: 0, Funny

    I suggest they put a few Pinto's in low-earth orbit and have them rear-end each other. Such research would answer flames-in-space as well as some critical questions dating back to the 70's.

    1. Re: Pinto's by Anonymous Coward · · Score: 0

      If learning about disasters in space is their goal then they could send a manned mission to Mars and just wait for a bit.

    2. Re:Pinto's by Anonymous Coward · · Score: 0

      Some Pinto's what? What belongs to the Pinto? Why didn't you also write flame's and question's?

    3. Re: Pinto's by WindBourne · · Score: 1

      These days Porsche carrera are preferred. Fast and blow up.

      --
      I prefer the "u" in honour as it seems to be missing these days.
  7. They are not burning a spacecraft by hawguy · · Score: 1

    They are setting off the fire inside a box inside the spacecraft. They are storing the data during the burn and transmitting it after the burn, so clearly they expect the spacecraft to survive.

    1. Re:They are not burning a spacecraft by Frosty+Piss · · Score: 1

      Yes and no. The craft is intended to survive the fire, but will later burn up in re-entry.

      --
      If you want news from today, you have to come back tomorrow.
    2. Re:They are not burning a spacecraft by hawguy · · Score: 1

      Yes and no. The craft is intended to survive the fire, but will later burn up in re-entry.

      That's not part of the experiment, that's the expected return mode of the spacecraft, so that would happen regardless of whether they conducted the experiment or not.

  8. Reckless by Anonymous Coward · · Score: 0

    They could set the Van Allen belt on fire.

    1. Re:Reckless by Anonymous Coward · · Score: 0

      But then where would we hook the Tim Allen hammer holster?

    2. Re:Reckless by Anonymous Coward · · Score: 0

      I am so sorry. Yes, that was bad and I feel bad. I'll see myself out. :/

      KGIII as AC

    3. Re:Reckless by TapeCutter · · Score: 1

      They could set the Van Allen belt on fire.

      OMG we will all be crushed by Van Allen's pants.

      --
      And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
  9. hmm by Anonymous Coward · · Score: 0

    Not just blowing off hot air...

  10. Are by Anonymous Coward · · Score: 0

    you telling me that after billions of dollars and many years the effects of a fire in space are only now being tested? Really???

    1. Re:Are by Daniel_Staal · · Score: 1

      It's basically been a 'we know it's bad, so we do everything we can to prevent it' type of thing. They're getting to the point where they can afford to risk a craft to see exactly how bad.

      Some small scale experiments have been done in the past, of course. And one or two 'uncontrolled experiments' as well...

      --
      'Sensible' is a curse word.
    2. Re:Are by TapeCutter · · Score: 0

      They tested it on Apollo 13.

      --
      And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
  11. Unmanned spacecraft by Latent+Heat · · Score: 1

    From TFA, that appears to be exactly the plan.

    Only, don't you suppose it is a good idea to place this capsule and run this experiment on board an unmanned spacecraft? So if something goes terribly wrong, you don't have an exploding capsule on board a manned spacecraft such as a Soyuz ferry or the International Space Station?

  12. Come in Houston... by dsmatthews9379 · · Score: 1

    We either have a fire on board or Harold is breathing heavily again, either way I've got a problem.

  13. Apollo 1 by Nethead · · Score: 3, Insightful

    I just hope they do this in the memory of Grissom, White, and Chaffee. That was one of my first early childhood scars.

    --
    -- I have a private email server in my basement.
    1. Re:Apollo 1 by BarbaraHudson · · Score: 1

      I just hope they do this in the memory of Grissom, White, and Chaffee. That was one of my first early childhood scars.

      Absolutely.

      --
      "Transparent" is a shit show that trades on every stereotype going. A man in drag is NOT a transsexual.
  14. What to do if you're on fire... IN SPACE! by jeffb+(2.718) · · Score: 1

    So instead of "stop, drop and roll", it's presumably "stand perfectly still so the flames will starve quickly"?

    On the other hand, since astronauts aren't routinely passing out in a cloud of their own exhaled CO2, I guess there's enough forced air circulation to keep the flames going more than long enough.

  15. Are they going to clean up afterward? by Anonymous Coward · · Score: 0

    Or are they going to wait until it's someone else's shit flying around in space that's a risk to spacecraft before crying off how much dangerous junk is in orbit around earth?

  16. It doesn't have to be oxygen. by Anonymous Coward · · Score: 1

    ANY reactant that is exothermic will work. We on earth have "plenty" of O2 and so we use things that oxidise quickly. Plenty O2 compared to the excess amount generally found in the universe.

  17. Extinguishing fires in space is easy ... by Ihlosi · · Score: 1
    ... the hard part is recovering after venting the atmosphere.

    Anyone who's played FTL will confirm that.

  18. Is the word unmanned really necessary? by Anonymous Coward · · Score: 1

    Just saying, I can't see NASA burning a manned spacecraft.

  19. Bigelow should do this as well. by WindBourne · · Score: 1

    Seriously, Bigelow should do this as well. They have a cloth structure, so it be good to see how it can withstand a fire.

    --
    I prefer the "u" in honour as it seems to be missing these days.
  20. Fire, fire burns much brighter by Anonymous Coward · · Score: 0

    ...when oxygen is the supplier.

  21. Fire Fire Fire by Anonymous Coward · · Score: 0

    So who's going to light the match? Beavis or Butthead?

  22. Re:NASA already did this by Anonymous Coward · · Score: 0

    Wasn't in space.

  23. Well that's a relief by Trogre · · Score: 1

    Unmanned, you say

    --
    "Nine times out of ten, starting a fire is not the best way to solve the problem." - my wife