Worlds largest multirotor makes successful maiden flight @ sUAS News.

Advanced Tactics Inc. announced that it has successfully completed the first flight test of the Black Knight Transformer, a modular and roadable vertical takeoff and landing (VTOL) aircraft. Advanced Tactics is at the forefront of large scale multicopter design, production, and testing and the successful flights of the Black Knight Transformer open the door to a number of future aircraft designs that leverage Advanced Tactics’ patented and patent-pending technologies.

The patented AT Transformer technology combines the capabilities of a helicopter, such as the ability to take off and land anywhere, with the capabilities of an off-road automobile. The AT Black Knight Transformer completed driving tests in December 2013 and completed its first flight tests in March 2014. The Black Knight Transformer is the world’s largest multicopter that is controlled and stabilized with propeller speed. The aircraft has a maximum takeoff weight of 4,400 lb.