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Jet Pack Runs For Hours On Water

Ponca City, We love you writes "Jet packs have been around for half a century, but there's always been one problem: they run out of fuel in around 30 seconds. Now a German company has taken the standard jet pack design, run a fat yellow hose out the back, and connected it to a small unmanned boat that houses an engine, pump, and fuel tank and sends pressurized water up the hose, where it's shot out by two nozzles just behind the wearer's shoulders. Called the JetLev-Flyer, the design purportedly can reach a height of 15 meters, a speed of 72 kph, and a range of 300 kilometers based on four hours of flying time. A digital fly-by-wire system is used to control the throttle. Future designs may achieve higher altitudes, higher top speeds, and extended range, and even travel below the water's surface. The American manufacturers claim it is 'amazingly easy to learn and operate' and they're taking orders now at $130,000 each."

17 of 268 comments (clear)

  1. are you crazy? by Dunbal · · Score: 5, Insightful

    and a range of 300 kilometers based on four hours of flying time.

          But based on the actual length of the hose, the range is more like 100 feet.

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    1. Re:are you crazy? by GreenTech11 · · Score: 4, Insightful

      The boat is towed along behind the jetpack, so the range is correct, if you are only flying above water :)Which limits the practicality in my mind. If however they can engineer them to work underwater, with a longer hose like those used on old diving suits, then I can see this having a purpose, i.e faster descent times and time spent examining shipwrecks etc.

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    2. Re:are you crazy? by $RANDOMLUSER · · Score: 5, Funny

      It reminds me of the electric car I invented - the one with the really really long extension cord.

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    3. Re:are you crazy? by ToadMan8 · · Score: 4, Informative

      lol; I think they mean the boat / pump thing will be underwater, not the jetpack. Divers are limited by physiological things when ascending and descending, not how fast they can swim. SCUBA certification organizations will tell you one foot per second up and down is about the limit. They already have underwater propulsion things (little units you hang on to that you point in the direction you want to go, and they run of batteries) to combat currents, long distance requirements, etc. that are about as good as required.

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    4. Re:are you crazy? by yotto · · Score: 4, Funny

      This seems more of a limit on a jetpack than I'd be willing to accept. I mean, cruising along 100 feet over the ground (Well, the water) is fine until you hit a dock, or accidentally go over land. Then you've got 100 feet of free-fall.

      As a bonus, you're almost guaranteed for this thing to ONLY fail when you're NOT over water, eliminating the only chance you have of surviving that big of a fall.

    5. Re:are you crazy? by ericspinder · · Score: 4, Insightful

      It reminds me of the electric car I invented - the one with the really really long extension cord.

      So, you invented the Trolley? Wow, nice to meet you.

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    6. Re:are you crazy? by Goaway · · Score: 4, Insightful

      As a bonus, you're almost guaranteed for this thing to ONLY fail when you're NOT over water, eliminating the only chance you have of surviving that big of a fall.

      You could just, you know, not try to fly over land.

      Since it doesn't work.

  2. So it doesn't run on water at all? by richy+freeway · · Score: 4, Informative

    It actually runs on whatever powers the engine that drives the pump.

    1. Re:So it doesn't run on water at all? by Overkill+Nbuta · · Score: 5, Funny

      The real question should be. Does it run Linux.

  3. A range of 300 km? by YeeHaW_Jelte · · Score: 5, Insightful

    I assume this is dragging the boat after you.

    What exactly are the advantages over just simply using a boat?

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  4. Re:Dollars are cheaper than pouns! by andy.ruddock · · Score: 4, Informative

    The web site advertises two models :

    155 HP = EUR 99,000 which is $125,116 (£88,122)
    215 HP = EUR 119,000 which is $150,392 (£105,924)

    so the Telegraph has the prices wrong.

    (Exchange rates courtesy of Google)

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  5. Military and coastguard applications by Kupfernigk · · Score: 5, Insightful

    One of the earliest uses for balloons and large kites was to tow an elevated observer behind a ship. I guess navies will be extremely interested in this. It's much less visible than a helicopter, cheaper, and safer, yet it permits over-the-horizon observation. Think of pirates off Somalia. Currently they can easily see and avoid ships, but fast patrol boats can't see them beyond a few miles. With one of these a small intercept craft can see the pirates, while remaining almost invisible themselves. Think of it as a floating artillery OP and the uses are obvious.

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  6. YouTube Video by Maddog+Batty · · Score: 5, Insightful

    YouTube video

    Most people are missing the point of this. It isn't a sensible solution, it is a FUN solution. I would love to have a go.

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  7. Re:This is a joke, right? by MichaelSmith · · Score: 4, Insightful

    So... what's it going to be used for? Rescuing cats from trees along the river?

    Basically the same use case as a parasail towed behind a ski boat. They are a lot of fun, actually.

  8. You are invited... by srussia · · Score: 4, Funny

    to take a ride on the Firehose.

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  9. Team sports by dpbsmith · · Score: 4, Interesting

    This sounds like a recreational device, and perhaps an interesting one. Calling it a "James Bond-style jet pack" is rather misleading, though.

    Safety: a fall into water from that height is not safe but not suicidal. I wonder how bad it is to be underneath and accidentally get sprayed by one of those jets? The video clip is silent; I'll bet the thing makes a hell of a racket. I wonder how many waterfronts will put up with it.

    I'm thinking, team sports. An extreme kind of polo or soccer or something. With players deliberately maneuvering to hit each other with the jets and/or tangle their hoses.

  10. Yes it is! by camperdave · · Score: 4, Informative
    I struggle to see this as a jet pack.

    Go and look up what a jet actually is. Here. Let me help you.

    jet (plural jets)

    1. A collimated stream, spurt or flow of liquid or gas from a pressurized container, an engine, etc.
    2. A spout or nozzle for creating a jet of fluid.
    3. A class of airplane using jet engines rather than propellors.
    4. An engine that propels a vehicle using a stream of fluid as propulsion.
    5. A part of a carburetor that controls the amount of fuel mixed with the air.

    Pay particular attention to number 4.

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