欧洲航天局为在国际航天发射市场上继续占有重要的一席之地,推出“阿丽亚娜”-5型新一代重型航天运载火箭研制计划。自1987年该火箭计划实施以来已有9年,法国、德国等欧洲12个国家纷纷投入巨资用于火箭的研制开发,投资额已达到约80亿美元。该火箭的第一次试验自然也就成为人们关注的热点。经几次推迟,火箭发射时间定在今年6月4日。第一枚试验火箭代号501。火箭发 In order to continue to occupy an important place in the international space launch market, the European Space Agency launched the “Ariane-5” development plan for a new generation of heavy-duty space launch vehicles. Nine years have passed since the Rocket was implemented in 1987, and 12 countries in Europe, including France and Germany, have invested heavily in research and development of rockets. The investment amount has reached about 8 billion U.S. dollars. The first test of the rocket will naturally become the focus of attention. After several delays, the rocket launch time is set at June 4 this year. The first test rocket code 501. Rocket hair