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The Defiant-X prototype Sikorsky is building is a striking departure from standard design, with a stacked set of rotor blades for nimble agility and a tail assembly built for speed.
Will the newfangled helicopter look radically different in a few years, whether to the casual bystander or a seasoned pilot? That could be one outcome for a crash course Pentagon planners are getting as they analyze the success of Ukraine soldiers in downing Russian helicopters.