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Ｘ－３３合作组织分裂为论证ＮＡＳＡＸ－３３单级入轨可重复使用运载火箭（ＲＬＶ）方案以替代航天飞机，于１９９５年初选择了三个小组：即麦道公司／波音公司小组，采用垂直发射／垂直着陆飞行器，由三角帆试验（ＤＣ－Ｘ）技术验证器改型。罗克韦尔公司提供垂直发射／...
The X-33 cooperative split into demonstrations of the NASAX-33 single-track reusable launch vehicle (RLV) program to replace the space shuttle. In early 1995, three teams were selected: the McDonnell Douglas/Boeing Company team, using vertical launches. / Vertical Landing Aircraft, modified by the Spinning Test (DC-X) Technical Verifier. Rockwell offers Vertical Launch/...