Rotary Aircraft: The Problem With Making Bigger Better

"Bigger is only sometimes better" is a mantra those who make, and those who use, rotary aircraft may want to take to heart. Small and cheap multi-rotor drones have been buzzing around consumer markets for the past few years, and the military has likewise adopted these little vehicles for their utility in flying reconnaissance missions and obtaining local situational awareness. The Black Hornet Nano, for example, carries three cameras and can fly autonomously for 20 minutes before recharging but is small enough to fit in the palm of your hand....