Single propellors
October 30th, 2009 by rbanks
Micro-vehicle Imitates the Winged Maple Seed
“The new “robo-seed” can fly and hover stably using just its single twisting propeller. The researchers accomplished this by separating the carefully-shaped wing and body components of the device, allowing them to control the wing’s tilt (and the size of the helix-shaped descent) without throwing off the flyer’s balance.” 
Technology Review
