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The Sikorsky-Boeing SB>1 Defiant coaxial helicopter on 12 October reached 211 kt in straight and level flight and 232 kt in a descent with about two-thirds propeller torque and engine power, the companies announced during the Association of the United States Army’s (AUSA’s) annual trade show.
Andy Adams, Sikorsky vice president for Future Vertical Lift (FVL), said in a 14 October statement that Sikorsky-Boeing plans continued flight testing and refining the Defiant’s designs to specifically match the US Army’s requirements. Sikorsky did not return requests for comment prior to publication.
The SB>1 Defiant on 12 October reached 211 kt in straight and level flight and 232 kt in a descent with about two-thirds propeller torque and engine power. The aircraft is being developed for the US Army’s FLRAA effort. (Sikorsky-Boeing)
The Defiant on 9 June reached 205 kt in flight while using less than 50% of the installed propeller power. Sikorsky-Boeing said on 16 June that it hoped to exceed 250 kt in the upcoming months. The aircraft is designed to achieve a minimum of 230 kt in flight.
An expert said that the Defiant’s 12 October speed accomplishments are great milestones on the way to demonstrating the high-speed and long-range capabilities of the platform. Mike Hirschberg, executive director of the non-profit Vertical Flight Society (VFS), told Janes on 15 October that flying 211 kt using only two-thirds of the propeller torque and engine power that the Defiant has available proves that it is capable of much higher speeds. The VFS is looking forward to seeing the aircraft demonstrate even faster speeds in the weeks to come, he said.
Andy Adams, Sikorsky vice president for Future Vertical Lift (FVL), said in a 14 October statement that Sikorsky-Boeing plans continued flight testing and refining the Defiant’s designs to specifically match the US Army’s requirements. Sikorsky did not return requests for comment prior to publication.
The SB>1 Defiant on 12 October reached 211 kt in straight and level flight and 232 kt in a descent with about two-thirds propeller torque and engine power. The aircraft is being developed for the US Army’s FLRAA effort. (Sikorsky-Boeing)
The Defiant on 9 June reached 205 kt in flight while using less than 50% of the installed propeller power. Sikorsky-Boeing said on 16 June that it hoped to exceed 250 kt in the upcoming months. The aircraft is designed to achieve a minimum of 230 kt in flight.
An expert said that the Defiant’s 12 October speed accomplishments are great milestones on the way to demonstrating the high-speed and long-range capabilities of the platform. Mike Hirschberg, executive director of the non-profit Vertical Flight Society (VFS), told Janes on 15 October that flying 211 kt using only two-thirds of the propeller torque and engine power that the Defiant has available proves that it is capable of much higher speeds. The VFS is looking forward to seeing the aircraft demonstrate even faster speeds in the weeks to come, he said.
AUSA 2020: Sikorsky-Boeing SB>1 Defiant reaches 211 knots
The Sikorsky-Boeing SB>1 Defiant coaxial helicopter on 12 October reached 211 kt in straight and level flight and 232 kt in a descent with about two-thirds propeller...
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