X2

Jul 11, 2014 - 7:13 AM
May 15, 2014 - 2:50 PM
The S-97 is a production-ready, “scaled-up version of the X2 demonstrator.”
May 28, 2008 - 11:04 AM
Sikorsky continues to inch toward flying its X2 technology demonstrator coaxial compound helicopter for the first time at its R&D and test facility in Hors