Also on StackOverflow: http://aviation.stackexchange.com/questions/3300/why-havent-quadcopters-been-scaled-up-yet/3305?noredirect=1#3305 http://aviation.stackex

Also on StackOverflow: http://aviation.stackexchange.com/questions/3300/why-havent-quadcopters-been-scaled-up-yet/3305?noredirect=1#3305 http://aviation.stackexchange.com/questions/3300/why-havent-...