This is a really cool radio controlled dragonfly which has some pretty neat gadgets in it. Like an ARM based microcontroller to stabilize the flight. And using carbon fiber foil wings they are able to flutter u to 20 times er second. Have a look at the video below.
The 17.3-inch long dragonfly drone can flutter through the air in any direction, and even hover, just like its biological inspiration. Its four carbon fiber and foil wings beat up to 20 times per-second, propelling it through the air as if it were swimming rather than flying. Actually piloting the robo-bug is achieved through a smartphone app, but an on-board ARM-based microcontroller makes small adjustments to ensure stability during flight. There are a few important pieces of information we don’t have just yet. For one, it’s not clear how long the two-cell lithium ion battery will last, and pricing or availability are missing from the brochure