A Water-Powered Jetpack

http://www.popsci.com/diy/article/2009-07/water-powered-jetpack

by yaj • 17 years ago

25 11 17 years ago

popsci.com

theklub• 17 years ago

I'll be the first to say that is awesome and I hope its not vaporware.

biohacker42• 17 years ago

If it's not too expensive I can definitely see this becoming very popular. Looks way more fun then a jetsky.

yan• 17 years ago

They say it's planned to cost $130,000. You can get quite a few jet-skis for that.

jseifer• 17 years ago

This does look like a ton of fun, though the "hose" attachment didn't seem to go too far. It's also not cheap. But kudos to the developer of the thing! It's an incredibly original invention and application. Plus, since it runs in the water and is attached to something you can't go too high and there's a smaller risk of injury.

Also, I chuckled at the pun of calling this "vaporware" :)

pshc• 17 years ago

"incredibly original"

Well, we can't be sure about that: ;)

http://en.wikipedia.org/wiki/Super_Mario_Sunshine

TallGuyShort• 17 years ago

I'm sure with a more powerful engine (which is planned), longer hoses will become possible. However, it says that the drag caused by the boat added significant stability during forward flight, so a short hose attachment actually increases the quality of the flight.

mcav• 17 years ago

Water-propelled, not really water-powered.

jpwagner• 17 years ago

wait, what does that say about your definition of "high-powered"?

paulgb• 17 years ago

I'm not a physicist, but this paragraph struck me as incorrect (or at least misleading):

Li, however, figured that if he attached a hose to his pack, and put the engine and water pump in a separate vessel that dragged behind him, he could seriously reduce his weight, and therefore the amount of thrust needed to stay aloft.

If the engine and pump were part of the jet pack, even if the engine and water pump were weightless, wouldn't it be impossible to get enough thrust to provide lift? The propellant is being thrown back in the direction it came, so doesn't the momentum cancel out?

gchpaco• 17 years ago

There's a great deal of extra momentum being added through the engine and water pump that you're not accounting for.

devin• 17 years ago

That thing would rip your feet off if you got in its way.

A Water-Powered Jetpack

Related Stories