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SB-1 Defiant Complete Except For Main Rotor Blades, Ground Runs to Begin in November

SB-1 Defiant Complete Except For Main Rotor Blades, Ground Runs to Begin in November
A 1:10 scale model of the SB-1 Defiant at the 2018 ASUA annual conference. (Photo by Dan Parsons)

Installation of its eight 30-foot-long rigid rotor blades is all the SB-1 Defiant needs to be a complete compound helicopter scheduled for a first flight before the end of the year.“Defiant has been completely built, minus the rotor blades,” Rich Koucheravy, Sikorsky’s [LMT] future vertical lift director, said Oct. 8 at the Association of the U.S. Army’s annual expo in Washington, D.C. “We have run nearly all of the aircraft systems, so not only have the individual components been put…

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