Helicopters are the ugly ducklings of the aerospace world. They are noisy, suffer from high vibrations and are much slower than fixed-wing aircraft. They have a shorter range and have higher maintenance costs. In short, people use helicopters when they have to, since they can land almost anywhere, but whenever there is is choice, fixed-wing aircraft are still the transport of choice. Is it Time for Something New? At the same unmanned rotorcraft have advanced greatly in recent years, such that consumer drones can now be purchased for the same price as a bicycle. Military drones such as the Northrop Grumman Continue Reading