DEFENSE The Sikorsky Boeing SB-1 Defiant high-speed helicopter demonstrator for the U.S. Army made its first flight on March 21 at West Palm Beach, Florida. The coaxial-rotor compound helicopter flew for more than 30 min., completing low-speed maneuvers.  Six to 10 hypersonic vehicle programs are funded in the U.S. Defense Department’s fiscal 2020 budget request. The Pentagon plans to spend $10.5 billion over the next five years on hypersonic programs, including $2.6 billion ...

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