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近年来,中国航天事业蓬勃发展,举世瞩目。“长征五号”运载火箭首次飞行任务取得圆满成功。这是我国运载火箭升级换代的工程,创新难点多、技术跨度大、复杂程度高,代表了我国运载火箭科技创新的最高水平。其首次飞行任务圆满成功,填补了我国大推力无毒无污染液体火箭的空白,使我国火箭运载能
In recent years, China’s aerospace industry has been booming and attracting worldwide attention. “Long March V ” launch vehicle first flight mission a complete success. This is a project of upgrading and replacing the launch vehicle in our country. It has many innovation difficulties, large technological spans and high complexity, and represents the highest level of scientific and technological innovation of the launch vehicle in our country. Its first successful flight mission has filled the blank of our country’s large thrust nontoxic and non-polluting liquid rocket so that our rocket carrying capacity