Sikorsky Boeing SB-1 Defiant Reaches Speed of 211 Kt Written 15 October 2020


Boeing-Sikorsky flight demonstration of the SB-1 Defiant in West Palm Beach, FL, 20 Feb. 2020. | Credit: U.S. Army photo by Sgt. Dana Clarke; Wikipedia; Public Domain

FlightGlobal reports that the Sikorsky Boeing SB-1 Defiant compound helicopter “reached 211kt (391km/h) using about two-thirds propeller torque and engine power during a straight and level flight” Monday. Sikorsky and The Boeing Company said Wednesday during a webinar that the rotorcraft also reached 232kt while descending. Previously, “the fastest the helicopter was reported to have flown was 205kt, during a flight test in June.” The Sikorsky-Boeing team “has said it is pushing for the rotorcraft to surpass 250kt.” The Defiant is Sikorsky and Boeing’s proposed helicopter for the US Army’s Future Long-Range Assault Aircraft (FLRAA), which seeks to replace the Army’s Sikorsky UH-60 Black Hawk fleet.
Full Story (FlightGlobal)