“A long-awaited major milestone for a leading suborbital vehicle developer—the first powered flight of Virgin Galactic’s SpaceShipTwo—is a little bit closer to taking place after a test flight Wednesday. Virgin Galactic reported SpaceShipTwo flew its first glide flight in ‘powered flight configuration’, with its rocket motor system, including tanks and nozzle, installed. The flight also featured the first flight with thermal protection material installed on the vehicle’s leading edges, components needed for high-speed powered flight.”
http://www.newspacejournal.com/2012/12/20/spaceshiptwo-edges-closer-to-powered-flight/