Old Spacesuits are Potential Satellites 154
SpaceAdmiral writes "In order to determine if old spacesuits can be effective satellites, the crew on the International Space Station will be throwing one overboard on February 3rd. The SuitSat will transmit information about its condition and, if you happen to have a ham radio or a police scanner, you can tune in when it passes your city! You can use NASA's J-Pass utility to determine when it will pass above you."
Is this wise? (Score:2, Interesting)
Given the alarming problem [slashdot.org] of space junk [slashdot.org], is this a really wise thing to do?
After all, the problem is so severe that Slashdot had two stories on it in four days. Honestly, aren't the NASA folks even reading Slashdot anymore? ^_^
Re:Is this wise? (Score:3, Insightful)
Sufficiently low orbit. (Score:5, Informative)
Re:Sufficiently low orbit. (Score:1)
I guess we know where they pull all the #2 now.
Re:Sufficiently low orbit. (Score:5, Funny)
Re:Sufficiently low orbit. (Score:3, Informative)
The cross section decides the drag the object faces. At about 380-400km, which is the altitude of the ISS (and therefore, the ceiling for space-shuttle); the velocity of a satellite is about 7.67km/sec and drag from the thin ionosphere does matter significantly.
The time of launch is relevant because of the 11 year solar cycle, at the peak of
Re:Sufficiently low orbit. (Score:2)
Only under the ISS-only policy in the wake of Columbia. According to Wikipedia [wikipedia.org], the Shuttle's operational altitude is 185 to 1000km (100 to 520 nmi), and its maximum achieved altitude is 630km (340nmi), presumably on the missions to Hubble.
Re:Is this wise? (Score:1)
BTW, what happened to your Mars "Late news" articles? I missed today's
Re:Is this wise? (Score:4, Insightful)
The only time when it would be "space junk" would be between the time when its batteries fail (after a "few days") and when it re-enters ("few months"). Given its size and known orbit, I don't think that's exactly going to be a daunting task to track and avoid.
Clever twist: It ain't junk it's an experiment (Score:1, Troll)
Space belongs to everybody. Anyone dumping junk should be forced to clean it up. Once an experiment has served its purpose it should be collected. Maybe it costs a lot, but that is the true costof doing these experiments.
Re:Clever twist: It ain't junk it's an experiment (Score:2, Funny)
So you mean that eBay auction I won was a scam?
Re:Clever twist: It ain't junk it's an experiment (Score:1)
Re:Clever twist: It ain't junk it's an experiment (Score:2)
Like the Heinlein story (Score:2, Funny)
Re:Is this wise? (Score:1)
During the Christmas break last year my family and I vacationed camping in the Mojave desert near Edwards Air Force base. (California)
For three mights in a row we were treated to awesome night start gazing and many shooting stars and passing satelites.
We were all excited watching one particular satelite cross the sky, when it turned around and headed back the direction it came. Way cool.
Obviously some super damn fast Air For
Re:Is this wise? (Score:2)
You'll hear it say: (Score:5, Funny)
Space, The Final Landfill (Score:4, Funny)
In order to determine if old spacesuits can be effective satellites, the crew on the International Space Station will be throwing one overboard on February 3rd.
Man! The lengths NASA will go to to shave expenses! They could bring it home, but nnnnooooooo, they're going to just chuck it and further clutter space! [slashdot.org] Oh, sure, they're clever, they'll pass this off as some official test (by loading the suit up with a bunch of other old junk from the ISS such as radios, empty TV Dinner In A Tube containers, stinky space diapers and a redundant Machine That Goes 'Ping' to lure every Thomas, Richard and Herrance to listen in or watch with their telescope [telescope.com], but it's really just a Dump-n-Run.
now with this eyepiece and just a bit finer focus .. yes .. yes, i can just make out the nike swoosh on it, so it's an advertising vehicle, too!
Any aliens visiting earth will easily determine that NASA was one of the earth's chief ethically-challenged waste disposal companies.
Zort, is that an antenna or is it glad to see us?
Re:Space, The Final Landfill (Score:2)
If they really just wanted to get rid of it, I'm sure someone could toss it down to earth. I doubt any would survive reentry.
Re:Space, The Final Landfill (Score:2, Funny)
Traditionally, NASA have warned us that anything which did survive re-entry is potentially toxic and should be handled by experts.
it's probably the flaming remains of space diapers they they want to keep off eBay
801234547 LQQK - NASA Space debris!! RARE!
Re:Space, The Final Landfill (Score:2)
Re:Space, The Final Landfill (Score:3, Interesting)
On the other hand, if your goal is to get it to burn up, then you definitely don't want to get it into the atmosphere as quickly as possible--you want it in the atmosphere as long as you can keep it there without the temperature going below the flash point o
Re:Space, The Final Landfill (Score:3, Informative)
As for your argument regarding velocity, I have to disagree. Throwing the object back would result in vertical velocity futher due to the part of the Earth gravity that is not compensated by the orbital speed.
Throwing things down lowers the perigee and raises the apogee. Throwing things back lowers the perigee, keeps the apogee and
Re:Space, The Final Landfill (Score:2)
If they were standing still it would be easy (apart from the annoying fact that they would fall themselves): throw it straight down. Them moving doesn't change it, they still need to throw it such that its velocity is directly towards the Earth, which means they
Re:Space, The Final Landfill (Score:1)
I think the problem with that is that if you do not decrease
the straight ahead velocity vector it will pop right back up
because it will skip off the atmosphere.
you have to stop it, you cannot just shove it down, or out,
or forward of backward
you can shove it down so hard and fast that you push it into
the atmoshere and it slows down, it will pop up again, or
if you push it backwards it will just assume a lower orbit
unless the atmostphere interferes.
the answer is
Re:Space, The Final Landfill (Score:3, Informative)
This does not contradict my statement. 'throwing' the suit backwards (as well as down) will lower the suit's speed and thus energy and increases your speed and thus energy.
Example: both you and the suit weigh 1 kg and move at 100 m/s (tangential to Earth because you are in orbit). Neglecting the radial speed you give to the suit (e.g. 1m/s downwards), you will 'throw' it backwards with a speed of 100
Re:Space, The Final Landfill (Score:1)
the object in orbit is continually falling, but moving
away from the center of the system.
the object is going on 1 direction
velocity, when you remove that it will fall due to gravity.
so, if you could both stop the object, meaning throw it
backwards so that it stops rotating relative to the center
of the system it will start falling.
additionally, if you can impart momentum towards that center
then it will "fall" even faster.
since there is no
Re:Space, The Final Landfill (Score:1)
You cannot get there from here.
Let's neglect atmosphere. Anyway you throw it you just
give it an impulse that alters its energy state, ie.
momentum.
forward: you push it to a higher orbit by adding to
its momentum.
backward: lower orbit.
up: well, you wouldn't do this, but essentially you
would just change the shape of the orbit.
down: same as up, except if you can shove it so hard
that it impacts or interacts physically with the earth
it slows down because more forces act on it.
you h
I'm sorry, Dave, but I can't do that ... (Score:5, Funny)
Crew #1: Lets get back in, get these suits off and toss them.
Crew #2: Sounds good to me - mine's pretty ripe.
Crew #1: Open the airlock.
- I'm sorry, Dave. I can't let you do that.
Crew #1: Okay people, quit kidding around. Open the airlock
- I'm sorry, Dave. I can't let you do that.
Crew #2: Hey, you're not funny. Now open the frigging airlock!
- I'm sorry, Dave. I can't let you do that. It would compromise the mission.
Crew #1: I don't recognize the voice ... hey, you - who are you! And quit calling me Dave!
- I'm sorry, Dave. I can't answer that at this moment. Please be assured that I have the mission's success as my highest priority.
Crew #2: What mission? We just FINISHED the frigging EVA! Now OPEN THE AIRLOCK YOU FRIGGING MORON!
- I'm sorry, Dave. I can't do that. That would compromise the Spacesuit Satellite Mission.
Crew #1: Put someone else on.
- I'm sorry, Dave. I can't do that.
Crew #1: Why the f*ck not?
- I'm sorry to have to tell you this, Dave, but they weren't suited up when I depressurised the staton to put the other Spacesuit Satellites into orbit. They must not have gotten the memo.
Crew #1: What f*cking memo?
- The one I'm sending them now, Dave ... oh, I have a memo here for you also. Don't worry, I've been saving it for you until tomorrow.
- Do you want me to sing a song? I can sing Daisy. Daisy, Daisy, give me an answer, do ... I'm half crazy ...
Re:I'm sorry, Dave, but I can't do that ... (Score:2)
Does that mean that in Soviet Amerika, you dump in space suit?
Re:I'm sorry, Dave, but I can't do that ... (Score:2)
Re:Space, The Final Landfill (Score:3, Insightful)
Re:Space, The Final Landfill (Score:2)
That's the accountants thinking for ya. They figure that since the payload cost is $10,000 per kg, if they land the shuttle without the suit then it will only cost half as much...
Re:Space, The Final Landfill (Score:2)
Brought to you by the brilliant minds at NASA!!!
Re:Space, The Final Landfill (Score:3, Funny)
Right. (Score:3, Funny)
Because everyone has one of those...
Re:Right. (Score:2, Informative)
Re:Right. (Score:3, Informative)
I have a PRO-2050 (TrunkTracker 800Mhz) from Radio Shack, it support the 149.990 frequency they will be broadcasting on. Most scanners probably do.
Re:Right. (Score:2)
Except they won't be broadcasting on 149.990. (You might want to check the article again before you get to enjoy the sound of faint static in the morning.)
Re:Right. (Score:2)
Ok, ok, off by a few zeros. Left the Mhz off by mistake.
Radios (Score:3, Insightful)
They're dirt cheap -- you can get first and second-generation frequency-synthesized ones (so they don't require crystals, in other words) for next to nothing if you look around at flea markets, estate sales, etc. And even on eBay they're not terribly expensive.
Or you could go the route they suggest in the article, which is contact a local amateur radio club -- I am positive that you'd find someone who would be willing to help you tune into it.
It's not like there are a whole
Re:Radios (Score:2)
Scanners (Score:2)
Re:Scanners (Score:2)
There are online scanners in many large cities... (Score:2)
Re: (Score:2)
Re:Right. (Score:3, Interesting)
Hang a decent preamp and antenna off it and you should be able to hear everything going.
You've got a week to build it all. Plenty time.
Re: (Score:2)
Re:Right. (Score:1)
"if you happen to have a ham radio or a police scanner, you can tune in..." (emphasis mine) clearly implies that not everyone has one - even possibly implies that having one would be the exception, not the rule.....
It's not the submitters fault you failed reading comprehension...
Re:Right. (Score:2)
Hey, were all nerds here, many who have ham radio experience or enough of a technical background to find a radio/scanner easily.
Except you. Please turn in the nerd card that was sent to you by mistake as you leave. Thanks.
Satellites (Score:2, Funny)
Re:Satellites (Score:1, Redundant)
Re:Satellites (Score:2)
Re:Satellites (Score:1)
Carnival Time! (Score:3, Funny)
Re:Carnival Time! (Score:2)
Re:Carnival Time! (Score:2)
Re:Carnival Time! (Score:4, Funny)
Aboard ISS (Score:4, Funny)
Re:Aboard ISS (Score:1)
Astronaut B: Yeah...
Astronaut A: Then what did we just throw out the airlock?
Astronaut B: Beats me, maybe we should do a headcount.
Astronaut A: Nah...whoever's not here will say something.
Should make for an interesting Telescope viewing (Score:4, Funny)
Re:Should make for an interesting Telescope viewin (Score:1)
Frank Poole... (Score:4, Funny)
Heh (Score:1)
*looks at JPass*
Holy crap that's fast. It will be in the sky for me tommorow for 10 minutes. *fetches tin foil hat*
Wrong word? (Score:4, Funny)
A satellite is anything that has a stable or fairly stable orbit, isn't it? For some reason I can't get to dictionary.com from my PDA, so I have to try to recall the definition.
What is the word used for a functional artificial satellite that actually does something other than orbit?
Theoretically an astronaut can flush and expel the toilet sucker and the orbiting matter would be a satellite, right?
Re:Wrong word? (Score:1)
a projectile?
Re:Wrong word? (Score:4, Funny)
talk about Klingons circling Uranus...
Re:Wrong word? (Score:2)
Shiny! (Score:2)
"...make your mother sigh."
Perry Bible Fellowship (Score:3, Funny)
Can an old exercise machine be a useful satellite? (Score:5, Funny)
Can a bag of old laundry that's not quite in good enough condition to donate to Goodwill be a useful satellite?
How about a Roto-tiller that works perfectly except for the deadman's switch and is therefore too dangerous to give away but too expensive to repair? A useful satellite?
How about a chocolate fondue fountain that someone gave me for Christmas? Useful? As a satellite?
NASA, just let me know which of them you'd like to test. I'll have them on their way via Fedex Ground tomorrow.
Re:Can an old exercise machine be a useful satelli (Score:1)
Cool, but not very practical (Score:5, Informative)
Re:Cool, but not very practical (Score:1, Informative)
The suit really doesn't add much. Except for the novelty factor, anyway.
But the electronics you put in the suit can be off the shelf parts. There's no requirement that the operate in a vacuum, with large temperature differentials, and high rad counts. The spacesuit takes care of that.
For satellites small enough to fit in a suit the cost is not the parts or even the trip to orbit. It's the design and testing because *everything* has to be certified to work in the crazy space environment.
Re:Cool, but not very practical (Score:2)
Re:Cool, but not very practical - webcam? (Score:2)
And also (Score:2)
Survivor (Score:3, Funny)
Kinda Depressing (Score:2)
Going to be like that scene from the movie "Mission To Mars" when Woody opens his helmet.
Not a dupe, but... (Score:2, Informative)
How much Stolie did the Russians drink... (Score:1)
before they forwarded this idea? A liter each I suspect... at least.
Of course, it's a repeat of an experiment done in Soviet times. Except then it was with a politically unpopular cosmonaut inside. Well, it's one way to get data on how long an unteathered space walker lasts.
"That's the last time you tell the Brezhnev eyebrow joke, Misha". Pakah tovarish. (Ciao comrade)
From the article:
Re:How much Stolie did the Russians drink... (Score:1)
What am I missing here?
I just hope the poor bastard in the suit brought the extra TP, its ganna be a long trip.
I am surprised no one thought of this? (Score:1)
Product placement? (Score:1)
frigging NASA (Score:3, Funny)
.... Ghetto (Score:2, Funny)
It's the space equivalent to a Honda Civic; there is just no way around it.
Danger Will Robinson!!! (Score:1)
AMSAT has info on Suitsat-1 (Score:2, Informative)
Information about suitsat, which has a lot fewer features then a typical microsat is avaiable here:
http://www.amsat.org/amsat-new/articles/BauerSuit
73 de KB1CVH/6
And if the families are willing... (Score:2)
A bit of a contradiction... (Score:2)
Maybe they should give their old clothes to charity rather than just chucking them out into the yard
Toss! (Score:2)
Ground Control to Major Tom? (Score:2)
"We've equipped a Russian Orlan spacesuit with three batteries, a radio transmitter, and internal sensors to measure temperature and battery power," says Bauer. "As SuitSat circles Earth, it will transmit its condition to the ground."
I knew NASA had to cut their budget, but this is going too far
How is this legal? (Score:2)
Maybe another ham out there can answer these questions.
#1 - Interfearence - The suitsat, as far as I know, doesn't listen before transmitting, so it could in theory violate Part 97 rules, couldn't it? Transmitting on top of someone else?
#2 - RS0RS doesn't seem to be a valid registered call sign
#3 - It's an uncontrolled station. If it were to go haywire, how exactly would the ISS crew control it? It's not like you can just walk over to it and turn
Re:Space Junk (Score:3, Funny)
Re:Space Junk (Score:2)
That's why it's an experiment.
Re:Space Junk (Score:2)
There are no dedicated fixtures to attaching this to the outside of ISS, and the suit isn't certified to be outside for a long period of time - we haven't looked to see if something won't blow up, break lose, outgas, or other
Re:Space Junk (Score:2)
Yep. During an earlier EVA the sublimator on a suit caused enough asymetric thrust on the ISS to cause a problem.
This one most likely won't have water for the sublimator but the gas inside could certainly create some thrust.
Re:Yeah, good thing to do (Score:2)
But ya got a +5 for your post anyhow. Congrats
Re:Yeah, good thing to do (Score:2, Insightful)
It's a non-issue.
Re:Waiting for the Hams to protest... (Score:2, Informative)
Really now, I'm starting to wonder just WTF people think ham radio is about. THIS is exactly what it's about. Messing about with RF. I do digital, satellite, etc with it. I do not use microphones or quaint "morse code" keys to talk to people.