quote Flight :
Virgin Galactic expects Scaled Composites to roll out its SpaceShipTwo (SS2) carrier aircraft White Knight II (WK2) in early May for ground tests.
Construction of the four-engine, twin-fuselage prototype is 80% complete at Scaled's Mojave, California facility, said Virgin Galactic at the New York unveiling of SS2 and WK2 on 23 January.
The WK2 will have an all-carbonfibre airframe with a 42.7m (140ft) wingspan, 23.7m overall length and a tail height of 4.5m. Powered by four Pratt & Whitney Canada PW308 turbofans, the aircraft will have a range, carrying its SS2 payload, of more than 4,200km (2,270nm).
source : http://www.flightglobal.com/articles/20 ... n-may.html
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