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The Sikorsky-Boeing #SB1 DEFIANT helicopter will further military capabilities in terms of speed and range. The helicopter is now advancing through its ground runs at the Sikorsky Development Flight Center in West Palm Beach, Florida.
Defiant, with its rigid, co-axial design, represents a leap forward in technology from conventional helicopters. This tech will help the military achieve its desired speed and range, while improving maneuverability and survivability in a cost-effective package for decades to come, according to

The first flight of the aircraft has been long-awaited, and in late 2018, the two companies confirmed it would be delayed until 2019. According to a statement released with the video, the ground run moves it closer to taking to the skies, according to
The unconventional rotor system used on the aircraft is based on Sikorsky’s X2 technology, and according to the development team, offers advanced agility and maneuverability.
The Defiant’s competitor is Bell’s V-280 Valor tilt-rotor, which has been flying since late 2017.