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I think I found it.

   Wed, July 30, 2008 - 1:41 PM
Scott's jet pack.

cosmiclog.msnbc.msn.com/archiv...28.aspx

For the price though, he will have to wait a while before he gets to bring one home.



7 Comments

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Wed, July 30, 2008 - 1:52 PM
(Sings)
"Did you ever know that you're my hero..."

Hey honey! I know what I want to replace the truck...
Wed, July 30, 2008 - 1:52 PM
Only a theoretical range of 30 miles, barley enough to hop across the sound.

I would not want to be up in the air when the engine stalls on that thing, there is no secondary system to soften the crash.
Wed, July 30, 2008 - 1:58 PM
I bet the Mythbusters are going crazy. I bet Jamie will have one once they come down in price a bit.
Wed, July 30, 2008 - 2:03 PM
It's just a prototype, but it does have an onboard parachute. The "Battwing" thing www.msnbc.msn.com/id/24617833/ linked to in the story is faster and more impressive visually, but is set up for an air-launch like a parachute (or the X-1, come to think of it) which makes it more of a toy. I'm betting that lighter components and better fuel efficiency will be the next step...

Anyway, there's hope. It's the first viable 'jet pack' option I've seen thus far.
Wed, July 30, 2008 - 2:11 PM
Ah good, but still, there is going to be a minim height you need to be above for the parachute to work (for a normal single person chute it is 250 feet). That will leave a danger zone that one will not want to linger in.

But I agree this is the first viable 'jet pack'. It is interesting that it is similar to the one the Mythbusters tried to make, but the Mythbusters didn't get theirs off the ground.
Wed, July 30, 2008 - 3:08 PM
I wanna have one too.
Wed, July 30, 2008 - 6:44 PM
"That will leave a danger zone that one will not want to linger in."

That's what throttles were designed for. ;o) Seriously though, I wonder if there's a way to feather the prop on these things like you do if a plane engine stalls. If the engines have independent power trains, you could limp on one and use the air currents of your descent to sort of push-start the other one. Dual or multi-engined prop-driven aircraft do it all the time. Or possibly autogyro like a helo or Osprey using the stored energy in the fans to slow your decent, though I think that requires a larger prop, though.

Anyway, turns out I mischaracterized the chute. It's a ballistic chute. So the height requirements are different since the fill faster than even a BASE jumper's chute because it's just there to slow you down, not to let you take in the scenery on the way down...

www.youtube.com/watch