New Type of Hot Air Blimp 152
An anonymous reader writes to let un know about a story up on the Experimental Aircraft Association site about a new kind of blimp. From the article: "Alberto, whose name pays homage to Brazilian aviation pioneer, Alberto Santos-Dumont, is 102 feet long with a 70-foot diameter and uses hot air rather than helium for lift. Its innovative foldable frame (much like an giant umbrella) creates structural support of its hot-air envelope, and it has a fly-by-wire vectored thrust steering system. Alberto is a hybrid; a hot-air balloon with aluminum ribs that looks more like a blimp, but with a tail propeller that gives it directional control." The home site of the blimp's developers has a timeline, photos, and a video of the blimp in flight.
well (Score:1)
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Re:well (Score:4, Informative)
A term of some use here is "dirigible", i.e. "something that can be directed". Term for lighter-than-air airships of the past was dirigible balloon, shortened to "dirigible" in common use.
As a young lad I read Doc Smith's stories (before learning that) and had this terrible image of his dirigible torpedoes being these explosive little balloons running around in outer space...
Oh, and the term "blimp", like "jeep", was a military term shortened in general use -- originally it was a "Type B-Limp Balloon"
There, I have just elocuted you.
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In place of a flying car, I'm having one of these. (Score:1, Funny)
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If you live in a penthouse, then this blimp would clearly be useful
Cool! (Score:3, Funny)
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"God as my witness, I honestly thought RMS could fly."
- Steve Ballmer
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Best. WKRP. ever.
To the Hindenpeter! (Score:2)
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Another piece in the puzzle (Score:4, Funny)
Mark this day on your calendar folks.
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But won't all that radiation cause the sharks to mutate, so then we'll end up with the entire crew of the elevator devoured by mutant air breathing laser sharks?
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We also would not build nuclear reactors that produce vast amounts of radioactive waste that will be toxic for 1000s of years.
But as we do all these things we are just going to allow oursleves to mutate into genetic supermen and women who are 12 feet tall. Then when we do make it into space we can conquer the galaxy with ease.
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Anyway, let's assume a Saturn V rocket - with a mass of 3,000,000kg. As each cubic meter of air has about 1kg of weight, you need a balloon at least 3,000,000 cubic meters for buoyancy at sea level.
Let;s say you want to launch the rocket at 8,000m (some 25,000 feet). Air there has a densi
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The hot air can be generated using a solar power generator, one such device for hot air balloons already exists.
For this reason, your cost caluclation is entirely not relevant to using the method proposed in this thread.
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Helium, on the other hand, once contained within a sealed bladder type system will not require any active means of interaction to achieve bouyancy. Height would most likely be regulated by pressure of the helium with
Hot air will never be lighter than air (Score:2)
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The problem is that the vehicle weighs something, and as the air gets thinner the relative displacement achieved by heating air internal to the surface decreases. I.e., the air inside has to weight enough less than an equal volume of the air outside to support the weight of the casing + any desired cargo. As the air outside gets thinner, any particular volume of it gets lighter, until, at the end, a good vacuum wouldn't be light
How about a Vacuum Blimp<tm> Patent Pending! (Score:2)
Instead of filling the blimp with hot air . . .
Just make the frame out of carbon nano-tubes, with um spectra fiber cloth for the baloon, then pump the air out of that baby and up you go!
Yeah! Thats the ticket! They probably tried this in Soviet Russia years ago, but failed because they didn't have carbon nano-tubes, so now all this profit are belong to me!
I've seen more practical aircraft (Score:3, Interesting)
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The tickets would be easy to hand out if you equipped all of the blimps with an IR device like you find on most cell phones and laptops these days. Just beam the ticket over.
Although the size is certainly a problem today, advances in carbon nanotubes, nanobots, and organic construction materials could mean sm
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I hope not... but if you did it could be an article on Your Rights Online. Everyone should have the freedom to own a big penis shaped blimp.
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You should be informed that you are making shit up.
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Yeah, and the vikings flew across to the Americas in blimps in the year 200 AC, oh and forget about crossing the Bering strait on winter - the indigenous peoples of the Americas came from China in, you guessed it - blimps of course... Oh and remember, the great pyramids were actually docking towers for the blimps - there was a lot of transatlantic blimp traffic 5000 years ago. This explains the similarit
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I happen to know that's total crap, because AC didn't exist until Nikola Tesla invented it in 1492.
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You're right, it has to be true; I read it in Wikipedia [theonion.com]!
Re:I've seen more practical aircraft (Score:5, Insightful)
Are you kidding? It's only 100 feet long. The Hindenburg was over 800. You, and everyone else complaining about 'practicality' have missed the point of these craft in the modern age: they're cruise ships in the sky. They are leisurely travel for people on leisure time. Just like people take cruise ships on vacation instead of jets to get from one island to another, except these things are cruise ships that can go from London to New York to Las Vegas. Hopefully the 100 foot toy size is a proof of concept. You need an 800 foot job to economically carry enough passengers and have nice enough accomodations.
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You do, if you have a two-car garage and one car. It's collapsible, and the lifting gas is expendable (as opposed to helium which is very expensive: helium ballons have to be kept full or emptied with expensive compressors).
who the hell will police the skies
The FAA. It's an aircraft, and they know precisely how to give you a ticket, thank you.
rj
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It's not the first personal aircraft ever invented. There's a well-proven system of requiring large identifying numbers to be visible on the outside of the aircraft.
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If you wanted to gather high altitude weather information, a helicopter would be much better than a balloon... </SARCASM>
Somehow, I must have missed the part of the article that said this is designed to be used by individuals who want to commute to work and back.
PBS Nova episode on Alberto Santos-Dumont (Score:3, Informative)
Interesting source of lift (Score:4, Informative)
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Not bloody much. The lifting power of a balloon/blimp depends on the difference in density between the gas inside and the air outside. At standard sea-level temperature and pressure:
One liter of air weighs 1.3 grams.
One liter of helium weighs 0.18 grams.
Therefore, by Archimedes's Principle, a one-liter helium balloon will lift 1.3 - 0.18=1.12 grams.
One liter of helium at 200 degrees C (392 F) would weigh 0.11 grams, and it would
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Not bloody much...you'd get about a six percent improvement
The Akron, the largest helium filled dirigible, had a lift capacity of 182,000 pounds. Plus or minus six percent is a whopping 11,000 lb variance depending on whether the sun was shining on it. Hot helium DOES make a difference.
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rj
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rj
If they use black fabric they may not require fuel (Score:5, Informative)
e.g.
http://perso.orange.fr/ballonsolaire/en-index.htm [orange.fr]
Re:If they use black fabric they may not require f (Score:2)
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non-optimal? (Score:2)
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So a balloon of a given volume would have less surface are for heat to escape than a blimp. Not to mention that weight of the material to enclose the volume.
A blimp is more aerodynamic but would tend to weigh more and loose more heat than a balloon would.
Your thinking of drag while the grandparent was thinking more about lift at zero airspeed.
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So I would expect the blimp to require more propane because of that.
vehicles from another age... (Score:2)
Can't wait. This kind of reminds me of that Dr. Who epside with the alternate universe with lots of blimps & dirigibles.
That thing needs a better colour scheme, though. It's not dark and moody enough.
I wonder it they'll ever reenable the docking tower at the top of the Empire State Building?
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Having just taken my parents to the Empire State Building in late September, I can tell you that whomever thought of the idea of offloading people across a small platform, at that height, in the wind that was there on the day I went, really, really, REALLY, needs to get themselves on some meds.
Fortunately, the idea was scrapped [glasssteelandstone.com] (second paragraph) long ago for the very reasons I just mentioned.
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Hey, that's peanuts compared to crossing the Atlantic under a balloon full of explosive hydrogen gas...
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In order to get it to work one would need some sort of deflector dish's to block the up flow. They will need more power too.
note: some sarcasm may be present in the above statement.
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Just a toy, not even a new one (Score:1, Insightful)
In other words, someone has built themselves a clever gadget, but it's barely been used at all, and is basical
Zeppelins are better (Score:2)
I don't suppose this new hot-air balloon can compete. It really does look like a cross between a blimp and balloon, though.
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PING Led Zeppelin (Score:2)
Brazilian aviation pioneer? (Score:2)
Man! That's a lot of blimps!
Cheap Fuel (Score:3, Funny)
Commuter blimps... (Score:2)
Not a Blimp (Score:2)
Type A - Rigid
Type B - Limp (hence the nickname "blimp")
This has a rigid frame inside so it cannot be a blimp.
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In other news.... (Score:2)
looks like a great UAV/UAS platform (Score:2)
Just a hot-air balloon with a powered fan? (Score:2)
Wouldn't you?
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Not really, although the very first airships were just that. The problem is you can only go fast enough such that the pressure on the leading, er, edge matches the pressure on the inside of the envelop. What that means is for a fabric balloon you'll get a flat spot at the "bow". Probably squeeze out some of the hot air and cost you lift. At any rate, the instability will make it very difficult to keep the fan pointed in the right direction.
Blimps get around the problem by having a sealed envelope and u
Surely its a dirigible not a blimp (Score:2)
Had to be said (Score:2)
thought process (Score:2)
Re:Big Deal (Score:5, Insightful)
Just because something is enormous unfolded doesn't mean it will be when it is folded...oh you have an umbrella? Where are you going to store that!? It would take up your whole closet!
Their patent is for hot-air ballons with internal frames which is much more new and innovative than 90% of patents out there (I'm looking at the company who's suing Nintendo for the trigger on the wii)
Stop being a hater for a single second and think about this, this thing is completely new. It's simple to fly, easier than hot-air balloons or blimps. Just think of the uses, replace a couple tour buses with this thing and you get the same maneuverability, better views, and little to no traffic on your tour. What other vehicle can do that?
Re:Big Deal (Score:4, Funny)
Word up playa. Representin' hot air baloons with internal frames against these clowns tha' be fruntin. Fa real.
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Completly new? Are you serious?
Next thing you know, you'll be excited about someone using hydrogen.
There's little to this device except curiosity, mainly because hot air isn't very efficient to generate lift. Helium, or better yet hydrogen, is a better choice.
Inflating and deflating gas bladders within a rigid frame sounds more practical than this.
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Hot air, on the other hand, could be produced easily through future portable renewable sources (batteries, solar cells, etc).
While a hot air craft may not be viable now, that doesn't mean it won't become viable in the next decade or two.
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Yes, and hot air is amazingly easy to produce in commercial quantities. For example, you could post an article titled "Ask Slashdot: Should I upgrade my Sony laptop to Windows Vista?". Or just set up a wide collector over any major city during the first week of November d
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Well, there *is* this giant fusion reactor a few tens of million of miles from here that is, apparently, very good at generating heat. If you spent some energy getting the dirigible initially inflated and then ascended over the cloudline, I suspect you might be able to leverage that thing somehow...
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Kindof like doing Google Earth in the flesh.
Oh, wait... Most of the folks here have never done anything in the flesh.
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Joe
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