Ballooning into Space 153
flyboy writes: "Two ballooners are going to attempt to get to 132,000 feet in a helium balloon named QinetiQ1. They are going to do this wearing spacesuits and sit in what looks like armchairs in an open gondola. From that altitude the sky is black and you look down on whole countries in one go. It looks like they might actually do it as well, since they have some serious backing, they are sponsored and supported by the former DERA, who have lots of experience in all things aeronautic."
Whatever happened to the guy in the lawn chair? (Score:4, Funny)
Re:Whatever happened to the guy in the lawn chair? (Score:1, Funny)
Re:Whatever happened to the guy in the lawn chair? (Score:1)
Re:Whatever happened to the guy in the lawn chair? (Score:1)
Re:Whatever happened to the guy in the lawn chair? (Score:2)
http://www.snopes2.com/spoons/noose/balloon.htm [snopes2.com]
Ballooning, will it never end? (Score:2, Insightful)
It seems like a really cool thing to do here, but I sure hope that QuinetiQ plans for the inevitiable failure. Frankly, the government should rethink its policy and seek reimbursement from thrillseekers.
Taxdollars? (Score:1)
Re:Ballooning, will it never end? (Score:2)
It seems like a really cool thing to do here, but I sure hope that QuinetiQ plans for the inevitiable failure. Frankly, the government should rethink its policy and seek reimbursement from thrillseekers.
Apart from the fact that Quinetiq [qinetiq.com] are a British corporation, and operate under the authority of the British government, and are a great deal more effective than NASA are for the US government.
Re:Ballooning, will it never end? (Score:2)
Re:Ballooning, will it never end? (Score:1)
Thay are taking off from England. I don't think they plan to cross the atlantic too.
Don't assume that all the nutters in the world are American, we have our fair share of them too!
Re:Ballooning, will it never end? (Score:2)
Offtopic? (Score:1)
OUT! OUT, Damned Spot!
Prolly break more bones than records... (Score:3, Informative)
Anyway, here is the story [sunday-times.co.uk].
Sounds like fun... (Score:2)
Boy. Parachuting down from 30 miles up would be a hell of a trip.
-djere
How long would it take to get back to the ground?! (Score:2)
Although I doubt they'd be able to sleep. That's crazy to think they could be falling and just fall to sleep. They need some sort of board to lay on that will keep them from flipping around while falling.
Re:How long would it take to get back to the groun (Score:5, Informative)
This could be done with a small stabilizing chute. It was used in the legendary Kittinger jump (Project Excelsior). This guy was jumping from 19 1/2 miles up, and 16seconds from jump time a small stabilizer chute would automatically open to stop spinning. Tests with Dummys back then have shown that an aerodynamically unstable object like a human can easily hit 200rpm in free fall. 140rpm for a minute are considered fatal.
Oh, and if you are tired, remember it will be short nap - 19 miles are crossed in less than 14 minutes.
Re:Sounds like fun... (Score:2)
But then again, if you do it... WHERE is the next step up? WHAT can you possibly do to get another adrenaline release that does not make you feel like yawning ?
I just posted two links to the Kittinger story. This guy jumped from 18,5 miles straight. You might want to check them out, go to this [slashdot.org] article.
Re:Sounds like fun... (Score:2)
Re:Sounds like fun... (Score:1)
I don't know if I'm just unconventional here, but I always thought that parachuting from an extremely *small* altitude would be more nerveracking. At least more so than a 20 minute free fall.
You aren't serious, are you? (Score:2)
A large enough balloon, and it's no problem.
From what I've seen, HUGE partially-inflated balloones are used.. they can go fro looking more like a giant upsidedown condom to a really huge round balloon.
As for the parachute.. of course you take one. Thing is.. you don't open it for a long, long time. At that altitude, if you opened a chute, it wouldn't help one little bit.. it would fall at the same rate as you.
re-entry. (Score:2)
IF you were literally simply droping straight down towards the earth.. it wouldn't be too much of an issue.
The big question is ... (Score:2, Funny)
(And what would you call
Re:The big question is ... (Score:1)
132,000 feet? (Score:3, Funny)
;-)
Size matters (Score:1)
So if the thing is as high as the Empire State Building (~1400ft), is it still likely to be visible from 600 miles away? Somehow I doubt it - that's like standing on top of the Sears Towers and seeing the Empire State Building!
Re:Size matters (Score:1)
Re:Size matters (Score:3, Informative)
The other problem with viewing objects near the surface of Earth is that when you look horizontally, you are looking through relatively dirty air. The problem is much less severe when looking up, because the air rapidly clears and thins as you ascend.
What we need to know is how bright is this thing going to be and what angle does it subtend from 600 miles away? A bright object can subtend a small angle (think supernova) and be visible, and an object which subtends a large angle can be dim, yet still be seen. I believe the moon and sun subtend about 30 minutes of arc, so I imagine anything that subtends, say, half a minute of arc would be considered visible (this is a guess) although if there were poor contrast (i.e., if the object is sky-colored), this wouldn't hold true.
At 600 miles, 0.5 minute of arc is approximately 460 feet. I couldn't read the article so I have no idea how big this baloon is, but I doubt it is 460 feet in any dimension. So to be visible at 600 miles, I think it would have to be bright (e.g., if it were low in the eastern horizon while the sun was setting, it might be quite bright.)
MM
--
Re: Size matters (Score:2, Informative)
Re:Size matters (Score:1)
..and if you look at recent baloon projects, the baloon hull was always something like silverish colored. That should make it quite visible, according to your calculations
Re:Size matters (Score:3, Interesting)
I saw Echo 1a in 1960 although it was only 30.5 meters (100 feet) in diameter with a perigee/apogee of 966/2157 km. It was a ball of aluminized mylar (i.e., a balloon). Coincidentally, 600 miles is 966 km so I saw it from at least 600 miles away as I watched it nearly from horizon to horizon.
Maybe there is a reson... (Score:1)
Re:Maybe there is a reson... (Score:1)
Balloons AGAIN? (Score:2, Insightful)
Re:Balloons AGAIN? (Score:2)
I dunno, how many expensive, embarassing rocket ideas have there been? If this can get you most of the way to near-earth orbit cheaply, then other propulsion to take over from there once the hard part of getting out of most of the atmosphere's been done, then balloons are great. But the only way to find that out is by trying it...
Qool (Score:2, Funny)
It may not be just a joy ride... (Score:5, Interesting)
If I can dig up some links I've seen about this, I'll post.
Cheers,
JD
Re:It may not be just a joy ride... (Score:2, Informative)
Re:It may not be just a joy ride... (Score:2, Informative)
http://www.jpaerospace.com/advanced.html [jpaerospace.com]
Re:It may not be just a joy ride... (Score:1)
Desperate to win X-prize. (Score:2)
Named for failure (Score:2, Insightful)
As long as the funding keeps flowing in, they can always find someone to strap themselves into the gondola of doom.
Re:Named for failure (Score:2)
Military Experiments (Score:2)
Though, I wouldn't even attempt to go that high in anything unless it had wings and an engine (with the exception of the Space Shuttle
Re:Military Experiments (Score:1)
Re:Military Experiments (Score:1)
As a matter of fact, Scientific American has an article about two morons (how could anything like this be considered anything but moronic) who will attempt to jump from balloons at 130,000 feet. See this article [sciam.com].
Re:Military Experiments (Score:1)
Are they bulding those without wings and engines now?
Re:Military Experiments (Score:1)
your wings would be quite useless...
Current record: 113,740 feet, set in 1961 (Score:4, Informative)
There's an ad for suborbital space flights starting December 1, 2001 [dollarsavertravel.com]. Price, $98,000. This has to be an old, bogus site; it's supposed to use the Vela "Space Cruiser", which was never built.
Who needs a balloon? (Score:1)
If you're in the Vatican, Monaco, Liechtenstein, Andorra etc. you could see the whole country from the top of a tall building - if there were actually any tall buildings in these places.
Darwin Award (Score:4, Insightful)
Re:Darwin Award (Score:1)
Naturally we can't all do like him, or we'd have planes knocked down all over the place. But every once in a while, it's nice to see someone do something just because he thinks he can, and to hell with the consequences.
Too bad he ended up a suicide, but maybe making his flight delayed the inevitable for a few years.
-ccm
Up up and away in by beautiful ballooooooonnnn (Score:1)
Amazing (Score:1)
These all must be taken into account before such an undertaking is... undertaken. I just hope they realize this. God be with you, you brave, misguided souls.
--------
"CREAM will be carried by the balloon to gather experimental data at these unexplored heights. The results could help provide data for the development of hypersonic commercial intercontinental travel." (It also goes great with pies)
Thank God for CREAM!
Experiments in the Stratosphere (Score:2)
Just don't wind up in the Land of Oz!
Re:Experiments in the Stratosphere (Score:1)
My submission: bring a handful of dimes to throw out and see what happens.
The balloonists in Trafalgar Square (Score:1)
Bon voyage!
Use this as a launch vehicle??? (Score:5, Interesting)
Did you guys see this picture:
http://www.qinetiq1.com/gfx/large_balloon.jpg
That is a HUGE balloon!
Now here is my thinking...
Remember the Hindenburg? (sp?)
What if this actually worked and on the next attempt they fill the balloon with Hydrogen?
If they built a special gandola which was a SMALL spacecraft, they could use the hydrogen from the balloon as fuel and possible exit the earths orbit.
Would this work? I don't have access to any of the math behind this so someone with experience could help.
... and we all know that everyone on Slashdot is a Rocket Scientist!
Re:Use this as a launch vehicle??? (Score:3, Interesting)
Wouldn't work. (Score:1)
You can't carry it as payload, obviously, because when you multiply the weight by 9 you no longer have a lighter-than-air craft.
So, you have to rely on ambient oxygen. And there just isn't enough at that altitude.
Nice idea, though. Pity about those pesky laws of physics.
Re:Use this as a launch vehicle??? (Score:1)
That's because there's SO little pressure at that altitude. It's nowhere near as big with the same mass of gas at a lower altitude, but the higher you get, the more volume the gas takes up, hence the huge volume at the top of their trip.
Re:Use this as a launch vehicle??? (Score:2)
OK. No maths behind this either but... Hydrogen under atmospheric pressure is not a great fuel in terms of rocket boosting. So we need to do something to put some pressure into that baloon - but remember, the more pressure the more density the less bouancy so the less lift - so we need to apply the pressure once we're up there.
We also need to apply it quickly - so we dont drop like a stone.
We also need some oxygen to burn with the H2 - not much of that up there... so we need to carry that too. Unless...
Unless we don't bother burning it we just 'untie the balloon' and let the H2 squirt out in a controlled manner...
We'll have 1 atmosphere pressure in the balloon, and 1/10th atmosphere outside so we have 9/10 atmosphere of pressure. So we need to work out the thrust that that can be turned into.
This is useless, but I'll post anyway in the good slashdot tradition!
Only half way to space. (Score:5, Informative)
Still, it sounds like a fun ride!
Re:Only half way to space. (Score:2)
The Air Force guys felt bad for them, so they organized a party where they presented the civilians with cardboard wings bearing the title 'Asstronaut'.
Don't hold out.... give me some of that stuff (Score:2)
Why does this story sound eerily like an acid trip?
Stoner 1: "And then we went up really really high in an air balloon called the QinetiQ1"
Stoner 2: "And also we were wearing these really really shiny spacesuits man."
Stoner 1: "And we could see everybody and they were like these really really tiny ants..."
Stoner 2: "And also we could, like, read their thoughts... and see time as really really pretty colors"
I just pray that the "reentry" doesn't find them emerging from a cloud on a couch in front of MTV at 3am in the morning.
Weightless or not? (Score:3, Interesting)
It is a popular myth that weightlessness is caused by the lack of gravity in space. In fact, the apparent weightlessness is a consequence of astronauts and their surroundings all moving together without resisting gravity. Satellites and spacecraft are still subject to gravity, but because they are moving fast enough horizontally, gravity pulls their path into a circle or orbit. The balloon itself will float with the wind and will travel at no more than 10-15 mph in an upward or downward direction. So the weight of the pilots will not be affected by the height they reach.
I can just about buy the bit about spacecraft, centrifugal forces or whatnot, but I'm still trying to figure out if they're trying to imply that these balloonists will have sea-level like weight at that height. Anyone?
Anyone know how 'high' you've got to get before you do float about because of a lack of gravity (oh my, what have I asked
not weightless by a longshot (Score:2, Informative)
Talk about ultra slim-fast. Not much of an effect, really.
Re:Weightless or not? (Score:3, Informative)
Force due to gravity varies inversely with the square of the distance.
So what's the difference in gravitational force from being at sea level, 4000 miles from the center of the earth, to 132000 feet, 4025 miles from the center of the earth?
4000^2 / 4025^2 gives me around 98%. So I'd weigh a few pounds less at that altitude.
To weigh only half as much, you'd have to be about 1700 miles above the surface, or about 9 million feet.
Earth big.
Of course, by the time you get 250,000 miles away (like the moon) you'd feel less than 0.03% as much gravity from earth.
And keep in mind that all of this assumes you are STATIONARY in relation to a point on the earth's surface. If you're orbiting, you don't feel gravity.
- Peter
Definitely not weightless (Score:1)
Don't think of weightlesness as being "away from the influence of gravity", instead think of it as being "in freefall" i.e. not resisting gravity but rather just falling with it.
Astronauts in earth orbit feel weightless, even though they are still subject to (almost) 100% of earth's gravity. Why? Because instead of resisting gravity (by standing on an immovable surface), they are just letting themselves free fall under the influence of gravity.
A circular or elliptical orbit may not obviously seem like freefall, but it is if you look at the vectors. If you superimpose centripetal acceleration (towards the center of the earth due to gravity) on top of just the right tangential translational velocity (orbital speed), you get a constantly curving path, that parallels the curvature of the earth. That's an orbit.
The reason the astronauts feel weightless and yet the baloonatics feel whightfull(?) is that the baloonatics are resisting gravity, rather than freefalling with it. If you could hypothetically accelerate the baloonatics to just the right orbital speed, in a direction tangential to the earth's curvature, they would be in orbit, and would be weightless.
Re:Definitely not weightless (Score:1)
They will have VERY close to sea level weight at that altitude.
About 98%, actually.
Astronauts in earth orbit feel weightless, even though they are still subject to (almost) 100% of earth's gravity
Assuming a "low earth orbit" (200-500 miles), the actual figure is 94% to 97.5%.
Re:Weightless or not? (Score:5, Informative)
Horizontal is in quotes above because it's not quite the right word. More properly, it's a velocity vector normal (or perpendicular) to the acceleration vector. Since the direction of the acceleration vector keeps changing as the position of the vehicle changes, the velocity vector keeps changing too -- as it must; there's an acceleration acting on it. The equations to compute the initial velocity needed to keep a vehicle in orbit at a particular altitude are not complex.
This is exactly the same physics that keeps the Earth orbiting the Sun and the Moon orbiting the Earth, just on a smaller scale.
The writers of Star Trek never understood how this worked. In TOS there were a number of episodes where the engines had been damaged or sabotaged and the orbit was somehow rapidly decaying. Only a moron would have put them into such a low orbit that it needed constant thrust from the engines to maintain it in the first place.
"Weightlessness" is also achievable by falling at the same acceleration imposed by the force of gravity. For the Earth, that's about 9.8 m/sec^2. Astronauts train at weightlessness for brief periods by doing just that -- they get into a specially modified cargo plane, fly up as high as it will go, then pull into a steep dive. They float around inside the plane just as they would on orbit for as long as the dive lasts.
The balloon will never be travelling anywhere near fast enought for any of this to occur.
Re:Weightless or not? (Score:1)
Are you sure? Once some big bird/767/marsian with raygun hit that thing, it will come down like Hermes on Speed and hit the pavement. At least IMHO.
Re:Weightless or not? (Score:2)
The writers of Star Trek never understood how this worked. In TOS there were a number of episodes where the engines had been damaged or sabotaged and the orbit was somehow rapidly decaying. Only a moron would have put them into such a low orbit that it needed constant thrust from the engines to maintain it in the first place.
Of course they understood how it worked. They were banking on most of the audience either not understanding how it works, or not caring. After all, decaying orbits are dramatic and ST is drama.
Now, won't Starfleet please listen to our report indicating that the red dye used in some uniforms seems to have a tendancy to attract hostile aliens and deadly anomalies?
Open cockpit = Space Sky diving. (Score:2)
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The ships hung in the sky in much the same way that bricks don't. - Douglas Adams
Wired Article (Score:3, Interesting)
132,000ft and then what? (Score:5, Informative)
Col. Kittinger did a 102,800ft rise in a balloon back in the early 60s (Project "Man high"). The thing that makes this ballon trip unforgettable to history (at least for me and at least until somebody pushes the limit) is the fact that he opened up the gondola he was hanging in to throw himself out into the hands of gravity for 18 1/2 miles.
You can read up on it here [tsixroads.com] and here [africanextreme.co.za]
Re:132,000ft and then what? (Score:3, Funny)
I wonder what would happen to their tinnies at 1% atmospheric pressure - that would be some really fizzy beer.
Re:132,000ft and then what? (Score:1)
Col. Kittinger did a 102,800ft rise in a balloon back in the early 60s (Project "Man high").
He got too close to the sun, and the project was renamed to "Project Man High Tan".
I agree. It's not like they're jumping. (Score:1)
mC
Re:132,000ft and then what? (Score:2)
Even better is the picture of him jumping... (Score:2)
picture shows Col. Kittinger jumping out of the gondola. This has to be one of the most incredible pictures ever taken...
here's [stratoquest.com] some more
looking down on whole countries (Score:1)
Whole countries? Liechtenstein [odci.gov] or Vatican City [odci.gov]: easy. Russia [odci.gov] or Canada [odci.gov]: not so easy. :-)
The best time and place... (Score:2, Funny)
Whatta show with meteorites coming down all over the place.
So a guy walks up to the old DERA building (Score:1)
LOL...or something
At that altitude (Score:1)
Wait, why not take up a couple of colt revolvers [colt.com] and some afghans. Did I type that out loud?
Darwin (Score:2)
Darwin award anyone?
Hindenberg 2 (Score:2)
QuinetiQ, DERA, balloons and AWACS TNG. (Score:2, Insightful)
Long drop.. (Score:1)
Not that i've actually done this myself, but strapping yourself to the top of what looks like a dingy and going up to 130,000+ft in the air - surely that's a recipe for some white-knuckle turbulence?
Something I saw once on TV from one of these transatlantic balloon flights.. Concord flew a couple of thousand feet above them and the sonic boom/shockwaves made the cabin attached to the ballon literally jump up into the ballon and then back down again (lucky the string didn't snap!).. That'd be one hell of a ride in this ride-on-ballon....
Background (Score:1)
pharmaceuticals? (Score:1)
This chap got to 11,000 ft with toy balloons (Score:3, Interesting)
For the real scoop... (Score:2, Informative)
Go to the Sun (UK) newspapar.
The article is here... [thesun.co.uk]
Packed with insightful scientific observarions such as:
"Their vast balloon -- 400 times bigger than normal ones -- should be visible from the ground as it ascends."
this won't work....... (Score:4, Interesting)
the helium will not be able to stay dense enough at higher altitudes to be able to give proper lift. there is a practicle limit on ballon travel.
Re:this won't work....... (Score:2, Insightful)
Ballons float because they (the ballon, the pilots, the gondola, everything that is tied together) are less dense than the atmosphere at the ground and are the same density as the atmosphere at their ceiling.
Helium does not need to stay "dense" to provide some lift. The less dense it is the better.
Re:this won't work....... (Score:2)
Re:this won't work....... (Score:2)
need a math person (Score:1)
breaking the sound barrier (Score:3, Interesting)
One of the points of this journey is to become the first people to break the sound barrier without a vehicle. Their top speed will be upwards of 900MPH on the way down, due to the vastly reduced air resistance. Seriously, think about creating a sonic boom with just your own body...
Re:breaking the sound barrier (Score:2)
"They also plan to be the first people to break the sound barrier without a vehicle. (There is still controversy surrounding whether Kittinger actually broke the sound barrier, but at the time even the jumper himself said he didn't.)"
Doesn't work without Javascript? (Score:2)