This type of flying machine is called an ornithopter in general, and many hobbyists have made their own. You can even buy toy ornithopters I believe. However, m

This type of flying machine is called an ornithopter in general, and many hobbyists have made their own. You can even buy toy ornithopters I believe. However, most cannot be controlled, and those that can probably can't be maneuvered as well as with this particular design. http://www.ornithopter.org/ http://www.ornithopter.org/ Many ornithopters use elastic bands for power, whereas this seems to be battery-based. I'm impressed with the 11 minutes of flying time. I wonder what sort of battery they are using that's so light. The weight of batteries seems to me to be the biggest issue in making smaller ornithopters.