The U.S. Army’s Joint Multi-Role (JMR) advanced-rotorcraft technology demonstration is gathering pace. The fuselage for Bell’s V-280 Valor demonstrator is complete, and the system integration laboratory (SIL) for the Sikorsky Boeing SB-1 Defiant demonstrator will fire up this year, followed in 2016 by the propulsion system test-bed (PSTB) for the rigid coaxial-rotor compound helicopter. Final assembly of the Defiant will begin in 2016, with the demonstrator on track to fly in ...

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