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SB>1 Defiant completes initial ground run tests

5th February 2019 - 14:30 GMT | by The Shephard News Team


The Sikorsky Boeing SB>1 Defiant helicopter has completed its initial ground run and is being ground tested before its first flight.

The helicopter is being developed as part of the US Army’s Joint Multi-Role-Medium Technology Demonstrator programme. It will help inform the next generation of military helicopters as part the US Department of Defense’s approach to Future Vertical Lift.  

The SB>1 Defiant has been designed to fly at twice the speed and range of today’s conventional helicopters and offers advanced agility and manoeuvrability. The medium-lift helicopter is configured to Sikorsky’s X2 coaxial design. The aircraft will feature counter-rotating rigid main rotor blades for vertical and forward flight, a pusher propeller for high-speed acceleration and deceleration and an advanced fly-by-wire flight control system.

The Shephard News Team


The Shephard News Team

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