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Build Log
Sub 0.1 gram Ornithopter
Hey everyone
Thought I would share these pictures with you. This is my newest ornithopter model. As if my 3" span monoplane ornithopter wasn't hard enough to build and get flying, I have made a 2" span biplane canard ornithopter! The complete aircraft weight, minus the 20 thou single strand rubber band, is 0.086g - just 86mg! Construction is mostly indoor grade balsa wood, canard is .004" boron fiber, and all wire is .005". Covering is Ultrafilm from Indoor Model Supply. The model flies very nicely and smoothly, and climbs well in circles around the living room. I will be drawing up formal plans soon. I made some changes between my original plans and the actual prototype. ***Plans Added*** Cheers Chris |
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Last edited by indoorff; Mar 06, 2006 at 02:23 AM.
Reason: Plans Added
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OH MY GOSH!!!! That is truly amazing. And to think I had trouble building a 1 oz. plane!
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That’s incredible!! One sneeze and it would be gone . I don’t know if I can build one that small or not. Maybe I’ll scale up the plans to 200% or 300%, with your permission of course. What kind of flight times are you getting and where can I find Boron? I have seen it sighted in other plans as well.
Great Job: Zach |
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Thanks for the compliments guys.
Zach - sure, scale them up if you like, I dont mind. Just dont start selling a kit . Flight times in my living room with a partial wind on the rubber motor on the order of ~15 seconds. In a larger area with more winds, hopefully at least 30 seconds will be possible. For Boron (and excellent balsa wood) check out www.f1d.biz Cheers Chris |
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Very nice work, Chris!
Very nice indeed.. It's hard to tell from your pix, but am I right that the flappers work "out of phase"? That is, one pair of wings are in mid-stroke while the other pair is in transition? 20 thou single strand of bum band? How do you wind that? If I were to say Frank Keiser's "Fancy Lady" would you know what model I was talking about? Lookin' forward to those drawings... --del |
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Del
Yes, the flappers are out of phase. (I think I understand what you mean there). The left side flappers both meet at the same time, top and bottom, but the right side flappers like you say are in transition at this point. I tied a small teflon ring on each end of the single strand. A little bit of trouble, but works OK. I will be getting some 10 thou rubber that I can make a proper loop of shortly. My rubber stripper will not go that fine. I know Frank Keiser's "Fancy Lady", yes. The drawing for mine are in fact posted in my first post. The are hand-drawn, because my computer was on the blink (literally - the monitor kept blinking on and off) at the time of construction. They look pretty good, so I am not likely to re-draw them in electronic format. Cheers chris |
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Quote:
Does this cause cyclic roll ? Cheers, Patricia |
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Nice!
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Beautiful work!
Video? |
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Quote:
Really a fascinating design and beautifully built ! Will you be taking any video of it ? Cheers, Patricia |
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