The SB-1 Defiant helicopter being developed by Sikorsky and Boeing has
achieved a key milestone by reaching speeds higher than 200 knots. Defiant is
one of two aircraft competing to become the US Army's future long-range assault
aircraft that should fly at least at 230 knots. Sikorsky test pilot Bill Feldt
noted that during the flight test Defiant reached speeds of 205 knots
while using less than 50% of the helicopter's installed propeller power. With these results he seems confident to reach higher speeds in future tests