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Buy Your Very Own Exoskeleton Flying Vehicle
dks writes "Yahoo! News is running a story about a personal flying machine originally developed for the military that straps on an individual's back and allows her to fly around for over two hours at a time. The prototype is now up for auction on eBay. The only catch--you have to agree not to operate the vehicle if you purchase it. Uh...yeah...I'm just buying it for display. Yeah, that's it."
Would you buy something for a million dollars off of ebay when the seller's rating is zero?
The reason they are selling the proto-type is that it got tangled up in the tether during a test hop and crashed. Its damaged and they don't have the funds to fix it. The DOD/DARPA folks that were supporting the development declined to extend the deadline(s) for demonstration of the technology after the crash.
The whole story as told from the SoloTrek perspective is on their web site. http://www.solotrek.com/
The eBay article features a link to the company designing this stuff and they have a very cool concept for a two seater: duotrek. I WANT one of these. No more fucking parking problems, that is if the roof of my appartment is strong enough...
giel.y contains 2 shift/reduce conflicts
So how would you know it worked?
I guess you could look at it like being married.
Never trust an atom. They make up everything.
Where have you been? Your response should have been more like:
Huzzah! A slashdot story posted with *no* spelling errors, with comprehensible sentence structure!
Go CowboyNeal!
Never trust an atom. They make up everything.
How about someone buys this thing and then sells it to me and then I fly it?
FRA: STFU GTFO
You're missing the point... she will use the strap-on to fly him around so that everyone will know the feeling.
OK... mod away, it is a bad joke, but I can't resist!
Welley Corporation - SLM Scammers
I have a fully functioning time machine for sale, bidding starts at £2 million. The only catch you have to promise not to use it. I also have a babe magnet but that's not for sale, but I may consider renting, usual conditions apply.
... the first thing I'd do is slap some Type-R stickers on this baby.
I mean, according to the specs page, it's only got 120 horsepower. I'd definitely have to keep adding and try to get that over 300.
After the stickers, I'd probably buy some shiny alloy propeller covers for the engine. Nothing says speed like a bling blingin' shine.
Then I'd alter the exhaust. To get better performance and an altogether faster ride, I'd replace the existing muffler with a stainless steel, hole-bored version. This would allow for a louder, more powerful sounding flight. Nearly everyone recognizes that fart can noises are sure signs of a ton of horses in the engine.
Last but not least, I'd get some neon lighting for above the head of the passenger, a few blacklight stickers for the interior portion, bright blue Xenon lights for nighttime flying, and a few custom Eminem and Jay-Z mixes for some kick ass in-flight tunage!
Reply or e-mail; don't vaguely moderate. Ex-O'Reilly/MIT employee, now a full-time Google employee.
Considering the facts that
- the name SoloTrek looks alot like StarTrek
- the font of their logo is remarkably similar to the font used for TNG
- they obviously are into science fiction
How long until they get sued by a certain company protecting their trademark?I started writing this post trying to make a joke, but now I have thought some more about it; dunno...
Wenn ist das Nunstueck git und Slotermeyer? Ja! Beiherhund das Oder die Flipperwaldt gersput.
Ground effect does not apply to this type of aircraft.
For an airplane, "ground effect" is the term applied to the tendency of a wing to exhibit increased aerodynamic efficiency (basically more lift and less drag) when it's within roughly a half-wingspan of the ground. It's caused, at least in layman's terms, by a cushion of air forming beneath the wing and the ground, and by the reduction of a drag-inducing wingtip vortex.
This vehicle has no horizontal wing flying thru the air. So we can eliminate the obvious cushion of air.
Now, a helicopter demonstrates ground effect for the same basic reason as an airplane, within half a rotor-disc-diameter or so of the ground, and also because for a hovering vehicle, the downwash tends to bounce back up again to provide a additional cushion. Here's a primer on helo ground effect. As you can see, the ground effect is largely produced by the ground limiting development of a tip vortex.
Just for completeness, we can also address ground effect for a hovering jet, like the Harrier Jump Jet. In that case, the downwash bouncing up certainly provides a cushion, and the Harrier has strakes under the fuselage designed exclusively to capture that cushion of air and enhance it - kind of like a hovercraft. But for a hovering jet, you have an additional problem - the exhaust gases also tend to get reingested by the engine, lowering the engine efficiency. One of the most vexing problems for the Harrier, and also for the newer Joint Strike Fighter designs, is "hot gas reingestion". In fact, if you hover these aircraft pointing downwind, you can snuff out the engine due to lack of oxygen. (This issue is probably not a big problem for the high-bypass arrangement of the SoloTrek, where very little exhaust gas is produced.)
Now to address this vehicle. The lift is provided by ducted fans. Therefore there is no tip vortex, because the duct prevents one from forming. In fact, the duct itself provides the same effect as ground effect, by eliminating the efficiency loss due to the vortex. The only relevant part of the "ground effect" here is therefore the bouncing cushion of air. But the fans on this vehicle are mounted so high above the ground (about 7 feet), and the total thrust is so low, that a fairly minimal ground effect cushion can be developed. In fact, in the pictures on Ebay, at least one of the photos shows the thing high enough up (the fans are at least 12 feet off the ground) that any ground effect that might exist would be almost totally eliminated.
So it's extremely unlikely that this vehicle's performance would change significantly with climbing away from the ground.
--Brandon / Split Infinity Music
"I don't see why they have to agree not to fly it."
The preceding restriction is brought to us by the letter F, the letter A, and another letter A.