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129min 15sec flighttime

Discussion in 'Multirotor' started by GPS, Jan 30, 2014.

  1. GPS

    GPS Registered

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    129 minute flight time would do nicely!

  2. GPS

    GPS Registered

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    I wonder if this quad was equipped with a waypoint enabled flight controller if it could go from Grants Pass to Jacksonville and back? What do you folks think?
  3. Pelagic Pilot

    Pelagic Pilot Registered

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    4050gr is about 9 Lbs, takes "about" 1 HP to hover 9-10 Lbs with standard flat bottom collective pitch helicopter blades (these would be less effective), at 24 Volts 1 HP is about 40 Amps, 24000 Mah is 24 Amps, which would be 36 minutes of flight time? I think I am close with the math? a 450 heli gets 6 minutes for a 2200 Mah, or 366 Mah per minute (366 Mah x 6 = 2196) so 366 x 129 = 47,214 Mah. And that is at only 1.75 Lbs.

    Unless there is better evidence, I call BS?
  4. LEM504

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    In Flight Fueling? Maybe Smoke and Mirrors?
    I vote BS
  5. GPS

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    I don't know, looks legit.

  6. LEM504

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    This thing is worth another look, by you number crunchers!
    Check it out on RC Groups and/or Directly on Vimeo on the feed back posts.

    He has taken a couple different approaches.
    Number one, Lithium Ion battery packs, a pile of them.

    Next, very low KV motors, big props, and low amperage
    Controllers.

    Amp draw must less than half of what my DJI draws.

    Flip the switch on the DJI from auto to manual, in the air.
    You will discover it drops out, faster than you can adjust the power level. That would indicate you are flying at near full throttle in auto mode. ( something I need to test with a watt meter )

    It would be a safe guess that power consumption goes way up with any maneuvers, and he has eliminated that by hanging in one place until
    The batteries give out.

    Multi rotors are something new and no doubt, we may find minor changes will turn it into a new ball game.
    At this time we are just fascinated to see them fly.
    Most of the stuff, other than the flight controller, is just equipment designed for airplanes.
    GPS likes this.
  7. Pelagic Pilot

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    LEM, it would hover at the same throttle in any mode, any increase in throttle from manual to auto would cause a climb. I don't use a NAZA but am reading up on Wookong H and the same exact thing will happen if the manual throttle position is not set up in the TX near the center stick position. Meaning that if manual hover is at 5/8's throttle and auto hover is at 1/2 throttle you will drop when switching from auto to manual until you raise the throttle back up.
  8. Pelagic Pilot

    Pelagic Pilot Registered

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    Found the thread, will read more of it later sometime, it is over 150 pages deep. I am interested in seeing more about how it was done. If it is legit then he has built one of the longest flying VTOL things ever. But it looks like he ran from the thread in the last post as a lot of claims that his videos are fake.
  9. GPS

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    I think the guy just got fed up with being ganged up on. I think it's legit.

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