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Defiant Advances Towards Top Speed

The Sikorsky-Boeing team continues to make progress as Defiant’s flight test program advances. Defiant’s speed, angle of bank and rate of climb continue to increase as more data is gathered.

On October 12, with about two-thirds prop torque and engine power, DEFIANT achieved 211 knots (242.81 m/h; 390.7720km/h) straight and level and 232 knots in a descent. Defiant is expected to have a cruise speed of 250 knots (290 m/h / 460 km/h)

The helicopter is participating in the Army's Joint Multi-Role-Medium Technology Demonstrator program. Data from Defiant will help the Army develop requirements for new utility helicopters expected to enter service in the early 2030s. Defiant is designed to carry four crew members and up to twelve passengers.

As of today, the Westland Lynx has a top speed of 249 mph, making it one of the fastest helicopters in the world. It was originally developed for the British Army and Royal Navy.

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