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Tag Archives: Mike Hirschberg

SB>1 Revs Up In Ground Test: Expert Expects First Flight ‘In Weeks’ « Breaking Defense

WASHINGTON: Sikorsky and Boeing released video yesterday of their SB>1 Defiant helicopter in its first ground test, revving the revolutionary ultra-rigid rotor blades whose manufacturing troubles had cost the program months. But when will Defiant first take flight? While the companies declined to provide details, a leading rotary-wing expert predicted …

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