Robotic Seagull

Discussion in 'All Things Boats & Boating' started by Doug Lord, Mar 26, 2012.

  1. Doug Lord
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    Doug Lord Flight Ready

    1 person likes this.
  2. Tim B
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    Tim B Senior Member

    Overselling it a bit isn't it? Not so much mastered as gained significantly more understanding. Shame it looked like the CG was too far aft, though.
     
  3. Doug Lord
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    Doug Lord Flight Ready

    ===================
    Didn't to me-it was able to stop,hover, backup, take-off from the ground etc,etc. Incredibly great accomplishment.....(too bad about the rudder)
     
  4. Petros
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    Petros Senior Member

    They are not the first by a long way. This has been examined by many over many decades, birds are basically unstable (and any craft based on it would be unflyable). IF you take a dead bird, stuff it and try and fly it, it will crash. I was working for a large aerospace firm 30 years ago that examined certain aspect of bird flight, it can be done but it is not practical for a man made device.

    What they built does not fly like a bird. They had to cheat the stablity in all modes, including the addition of the extra tail fin. Birds do not need to be stable because they have a very complicated on-board stablity augmentation computer, its brain (which is far most sophisticated than any man made computer btw). It is like trying to make a machine that can ride a bicycle or jog like a human...it can be done, but there is no reason for it since it is easier to make a device that is stable and just power it.

    It is so arrogant to claim they were the first people to "unlock" the "secret" of bird flight. What a load of tripe. They are only the first ones fool enough to think there was any merit in doing it. Besides, over 40 years ago I had a plastic wind-up toy bird that flew by flapping it wings, no computer required.

    Now here is a real accomplishment, human flight without motorized assistance:

    http://www.youtube.com/watch?v=Jzftp3gZMzQ
     
  5. bntii
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    bntii Senior Member

    Compelling model-- kudos to the team who developed and built it.
     
  6. BPL
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    BPL Senior Member

    Very cool.
     
  7. daiquiri
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    That video must be a fake.
    No way a human being could have a power and endurance in pectoral muscles to lift his body weight off the ground with flapping wings. Birds can do it because they have evolved a combination of particular characteristics necessary for the flight:
    - low body density - between 750 and 950 kg/cu.m
    - a hugely oversize (by human standards) pectoral muscles - 20-25% of the total body weight;
    - a chest skeleton shaped to give pectoral muscles a strong base and the optimum path for a long and efficient power stroke.
    We just can't compete with those little monsters. :)
     
  8. Doug Lord
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    Doug Lord Flight Ready

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  9. Petros
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    Petros Senior Member


    It is a fake, a week after his cleaver video editing went viral he came out to admit it is a fake (look at the ground shadow, there when on the ground but is gone at take off). The guy is a film maker, not a pilot, engineer, or even an athlete.

    I have more than a few times calculated the amount of power it would take to maintain level flight in still air and there is no way it is possible, even with an Olympic athlete on steroids. He did get the size of the wings about correct (very large), but the cleaver thing he did here was the wing flapping only provides forward motion, not lift. So he runs into a slight head wind, and the flapping just keeps him moving forward to maintain airflow over the wings. The wings are strapped to his back, not his arms. the arm motion is just to rotate the wing leading edge up and down. With that arrangement, it might be possible, with a head wind, to accomplish controlled flight.

    But it would act more like a hang glider rather than actual muscle powered flight.
     
  10. daiquiri
    Joined: May 2004
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

  11. Submarine Tom

    Submarine Tom Previous Member

  12. mariocroatia
    Joined: Feb 2012
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    mariocroatia Junior Member

    THIS VIDEO IS FAKE
     
  13. Submarine Tom

    Submarine Tom Previous Member

    WHY ARE YOU YELLING?

    -TOM
     
  14. Petros
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    Petros Senior Member

    we know it is a fake, see post #9
     

  15. Corley
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    Corley epoxy coated

    If they can make a robotic seagull that can negotiate with his mates and tell them to join him in flight rather than defecating on my moored boat I'd consider that a great addition to mans technological advancement.
     
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