"Defiant X" Enters U.S. Army FLRAA Derby | Aviation International News

"Defiant X" Enters U.S. Army FLRAA Derby

Sikorsky and Boeing unveiled a slicker version of their SB-1 “Defiant” for the U.S. Army's $40 billion future long range assault aircraft competition.

The Defiant X features a rigid coaxial rotor system and pusher propeller.

By Mark Huber • Contributor

January 25, 2021

Sikorsky and Boeing this morning unveiled an aerodynamically slicker version of its SB-1 “Defiant” entry for the U.S. Army’s Future Long-Range Assault Aircraft competition (FLRAA). The “Defiant X” has airframe enhancements to improve aerodynamics and reduce the aircraft’s thermal signature. Like the SB-1, the X features a rigid coaxial rotor system and pusher propeller, enabling high-speed cruising while maintaining low-speed handling qualities that increase survivability in high-threat air defense environments.

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