Drone spray helicopter flies by wire

by By Hamish MacLean Could unmanned helicopters be, as their manufacturer claims, "the future of the agriculture industry"? About a dozen farmers gathered on a farm near Ngapara on Thursday to have a look at the 99kg, 2.9m nose-to-tail, Yamaha RMAX in a simulation of spraying gorse along a fenceline, a creek, and in a"