Sikorsky-Boeing-Defiant-03212019-First-Flight-1

Sikorsky-Boeing-Defiant-03212019-First-Flight-1

The Sikorsky-Boeing SB>1 DEFIANT™ helicopter achieved first flight March 21, 2019. With its two coaxial main rotors and rear-mounted pusher propulsor, DEFIANT is unlike production rotorcraft available today. Photo courtesy Sikorsky and Boeing.

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