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The SB-1 Defiant is a high-speed multi-purpose helicopter project being implemented by Sikorsky and Boeing. The project is aimed at participating in the military program for the creation of new-generation transports and replacing the UH-60 Black Hawk helicopters. The SB-1 has an unusual layout for a helicopter, developed on the basis of Sikorsky's research on their XH-59 and X-2 programs. It is equipped with a large coaxial main rotor, as well as a pusher propeller in the tail, providing acceleration. Thanks to such solutions, the Defiant is capable of accelerating to speeds of up to 247 knots (457 km / h), which makes it one of the fastest helicopters in the world. At the moment, the project is still in the development stage, the prototype has passed a significant part of the testing program, and Boeing and Sikorsky have also announced its upgraded version, called Defiant X. Defiant is the main competitor of the Bell V-280 Valor project, which is made according to the tiltrotor scheme. Thanks for watching! Subscribe to the channel, comment, like! Skyships Boosty: https://boosty.to/skyships Our VK group: https://vk.com/public123681709 Channel on Yandex Zen: https://dzen.ru/id/6229f21fb2ff024222... 00:00 – Unusual helicopter 00:48 – Slow helicopters 02:00 – Sikorsky XH-59 03:06 – Sikorsky X-2 04:00 – New generation 07:24 – SB-1 Defiant 13:25 – Flight tests 15:11 – Not enough record speed 16:54 – Defiant X 19:04 – Foggy future