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  • Moderator
    Sgt Ric October 17, 2014 at 8:04pm
    @Swift, I'm sure @Winfried won't take offence to your comment... There're a lot of things you won't get me in, like a roller coaster or a submarine. (I leave that to TCIII)
  • Sean Skirvin October 17, 2014 at 5:04pm

    At the risk of being labeled a "hater", I feel I should elaborate on my previous post.  I believe that a craft of that size with fixed rotors will be difficult to control.  Making the props as light as possible will help mitigate the inertial delays on your control inputs, but using variable pitch rotors would be much more controllable.  On a positive note, your power seems good enough for about a 600lb (272kg) TOW, depending on how efficient the powertrain/rotor combo is.  

    I tip my hat to the ambitiousness of your project.  I just hope you (and everyone really) proceeds with the highest amount of caution.  I just don't want to see anyone get hurt.

  • Winfried Rijssenbeek October 17, 2014 at 2:08pm

    dear Hans, Quite fun that you take the same analogue thinking: indeed the Sikorsky price contender that may be a 1 kW available, And we all know the relation lower differential airspeed makes more efficiency. Our compact design indeed needs some more power  ca 6  x 6.5 kW. best Winfried More compact again would require more! 

  • Winfried Rijssenbeek October 17, 2014 at 2:03pm

    Nice Tommy, it is quite similar to the kick starter project or is it that one?

    Best Winfried Are you still in this area?

  • Winfried Rijssenbeek October 17, 2014 at 1:59pm

    Of course Tobias we know the evolo and the guy starting it. The size of that one is a little too big in our view; we would like to get it to 2.5 by 4 meters. But indeed we used their lessons.. best Winfried

  • Moderator
    Sgt Ric October 17, 2014 at 12:49pm

    Agreed.

    This community is for sharing and supporting our fellow hobbyists...it's sad how quick the haters pop up everywhere these days.

  • John Dennings October 17, 2014 at 11:29am

    Surprised at the amount of negativity here, the  "it's been done", "won't work", "bad design", etc ...

    If the Wright Brothers or other aviation pioneers had listened to these kind of comments (and I am sure there were plenty), we  would not have any heavier than air machines flying today. And  in more modern times no ipod or smartphones if Steve Jobs had listened to the kind of negative reactions and sneers he got when introducing said  ipod.

    Par for the course, I suppose ..

    You go,  Winfried!

  • Tobias Witting October 17, 2014 at 1:05am

    Sorry to spoil the fun. These people already advanced their human multicopter quite  lot: http://www.e-volo.com/

    https://www.youtube.com/watch?v=L75ESD9PBOw

    https://www.youtube.com/watch?v=6rK2Url7UBQ

  • Tommy Larsen October 17, 2014 at 12:53am

    I made these drawings some time ago... :)

    http://diydrones.com/profiles/blogs/full-size-y6-air-scooter

  • Hans H. October 17, 2014 at 12:27am

    Looking at Hobbykings contest to lift beer, several managed to lift 50kg+. With more engines it should not be a problem. Doing this "effective" is a completely different thing.

    My own little drone needs 130Watt for lifting 1kg with 4x 10" propellers.
    It's pretty good with 7gram per Watt.

    Atlas Human-Powered Helicopter - AHS Sikorsky Prize, where a pro cyclist generate 650Watt to lift 80kg + 4x 20,2m propellers.
    Total incredible with 125grams per Watt

    BTW, have you test with a scale model? Having a heavy keel under a drone is not always a good idea. It may be better to carry the pilot hanging in a joint coupling.

    https://www.youtube.com/watch?v=syJq10EQkog

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