The first flight of Bell-Sikorsky’s proposed aircraft for the Army's Joint Multi-Role Technology Demonstrator has again been delayed, this time until early 2019, as representatives say it requires more testing. The SB-1 Defiant must run for at least 15 hours on a test bed before the flight can occur to see how all of the parts work together and mitigate any problems. Rich Koucheravy, Sikorsky's director of business development for Future Vertical Lift, declined to specify all the issues that...
