SpaceShipTwo success puts fatal explosion in the past

 作者:慎伲窈     |      日期:2019-03-02 08:20:11
BLASTING off to the edge of space in SpaceShipTwo, Virgin Galactic’s commercial spacecraft, may be one step closer after the successful testing last week of a new solid-liquid hybrid rocket motor. The test follows a review of a fatal explosion in 2007. In 2004, the aircraft and rocket maker Scaled Composites of Mojave, California, won the Ansari X prize for SpaceShipOne,