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Sikorsky–Boeing SB-1 Defiant

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Sikorsky S-97 Raider high-speed scout and attack compound helicopter

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Sikorsky S-97 Raider I 60 SECONDS

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VRS-Proof Compound helicopter X-Plane 10.51 Tests

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Sirkosky S-97 Raider Deadly Light Tactical Helicopter

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.