The SB>1 Defiant compound helicopter reached 205 knots (235.9 mph) in a flight test last week, and it did so while running its engine at less than half power, Sikorsky test pilot Bill Fell said this morning. Once ground testing this summer confirms all systems are ready – and one such test was audibly whirring in the background as Fell spoke with reporters this morning – the aircraft will ramp up to full power over time, reaching a projected 250 knots (287.7 mph) "within a few months."
#SB1Defiant Expands the Flight Envelope – Achieve…: https://youtu.be/KIxAd36f2UA