The Sikorsky-Boeing team behind the SB-1 Defiant demonstrator is pressing on with additional flight tests, five months after submitting to the US Army a proposal for the Future Long Range Air Assault ...
The Sikorsky-Boeing SB-1 Defiant rotorcraft demonstrated the ability to lift a 2,400kg (5,300lb) sling load in a recent test flight. The co-axial helicopter with a pusher propeller is still undergoing ...
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