First flight for Defiant

The Defiant is characterised by its two coaxial main rotors and rear-mounted pusher propulsor, offering almost twice the speed and twice the range of conventional helicopters. Sikorsky-Boeing THE SB-1 Defiant compound helicopter developed by Sikorsky and Boeing completed its maiden flight on March 21, after being rolled out in late December. The rotorcraft, which is part of the US Army’s Joint Multi-Role – Technology Demonstrator (JMR-TD) programme, took to the air at Sikorsky’s West Palm Beach, Florida site. Data from