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Variable Pitch Quad Rotor - M/UAV

Posted by fibrewire on March 14, 2010 at 12:30pm

Variable Pitch Quad Rotor - M/UAV

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DIY project ranging from a 600cc 120HP etec Ski-Doo engine, UltraSport 254 tail rotors, extruded aluminum blades from Vortech, aluminum / steel tube structural components, and a carbon fiber reinforced polymer monocoque frame.

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Comments

  • fibrewire December 26, 2013 at 2:58am
    The first video is exactly what I was looking for! Almost identical to my plans, only using drive shafts instead of belts. A belt still couples the drive train to the drive shaft to absorb vibration induced by the 2-stroke engine. Did I mention mine weighs about 200lbs and seats an human being?
  • Moderator
    Gary Mortimer December 26, 2013 at 2:35am

    Oh and

  • Moderator
    Gary Mortimer December 26, 2013 at 2:21am

    Well there are several flying now, this being the most impressive

  • fibrewire December 26, 2013 at 1:22am
    Here I am, still a work in progress. Doesn't anyone wonder what a variable pitch quad rotor UAV could do? I've got the whole thing built on paper, and most of the parts to make it happen. I just need about $20k to get a flying prototype off the ground, and $50K to start testing this beast in the real world. Maybe someone interested wants to buy everything from me? This has to be worth millions in the correct hands, whether it's autonomous package delivery or manned urban maneuvers...
  • fibrewire October 2, 2012 at 10:12am

    2.5 years and nobody has even attempted this yet? Real life gets in the way, but I'm the only dummy with big dreams? Guess I have to do this for real just so it can be "done"

  • fibrewire December 25, 2011 at 10:52pm

    Pictures soon, also some proof-of-concept video + my rotor diameter

     

    https://www.youtube.com/watch?v=qvxfo5oGaPA

    https://www.youtube.com/watch?v=Vy5Ky50eGJs

     

  • fibrewire October 9, 2011 at 12:52am

    Still working on this, real life gets in the way. Someday I will post my progress.

  • fibrewire July 18, 2011 at 12:41am
    personal achievement.
  • fibrewire July 18, 2011 at 12:09am

    Doesn't seem right, but four 48" rotors is the equivalent of one 16' rotor...

     

    1400lbs static thrust???

  • fibrewire July 17, 2011 at 6:37pm

    Two 3-way gearbox, CVT on center axle. See here

    I'm designing the monocoque fuselage now, but my main project is design of the blade roots and lead-lag damper plate.

    The original blades for this aircraft are only about 12" long with a 2" chord, made of Roacell foam with a carbon fiber 'C' spar and tungsten weights for inertia. The new blades are 18" long with a 3.5" chord, made from a single piece of extruded aluminum. The roots for the new blades will be about 3.5" long, for a total blade diameter of 48".

    The engine will produce 115 HP at the target RPM of 6000. Once the blades are built, I will begin testing to see what the optimum speed for lift is. The rotor with blades will be mounted to a pedestal built specifically for testing. The rotor will be mated to a 30HP 3600RPM electric motor, and lift generated will be measured by a load cell.

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