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Sikorsky–Boeing SB-1 Defiant

Aircrafts

The Sikorsky–Boeing SB-1 Defiant is the Sikorsky Aircraft and Boeing entry for the United States Army's Future Vertical Lift program, succeeding the Joint Multi-Role initiative. It is a compound helicopter with rigid coaxial rotors, powered by two Honeywell T55s, and should make its first flight in 2018.

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