Top Choppers: 15 High-Flying Helicopter Designs & Drones

Everybody’s buzzing about Amazon Prime Air, which will bring the products you order from the mega-retailer to your doorstep in just 30 minutes via helicopter drone. So how else is helicopter tech – both manned and unmanned – moving forward into the future? These 15 designs include pedal-powered flying machines, electric helicopters, self-assembling drones and the world’s most expensive helicopter at $21 million.

Full post: Top Choppers: 15 High-Flying Helicopter Designs & Drones

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