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航天飞机模型 (2).png


航天飞机模型

       航天飞机是一种有人驾驶的可重复使用的航天器,它既能像火箭一样垂直起飞,像太空飞船一样在轨道上运行,又能像飞机一样水平着陆。 航天飞机可乘7名航天员,其中3名机组人员,4名科学技术专家。航天飞机在轨道上运行时,可完成释放卫星,回收维修卫星,进行各种重力科学实验等多种任务。 航天飞机由轨道器,固体燃料助推火箭和外储箱三大部分组成。 航天飞机总长37米,翼展宽24米,总质量为68吨。 挑战号航天飞机是美国的第三架航天飞机。价值12亿美元。从1983年4月4日首航至1986年1月28日,共飞行10次。每次飞行费用约2.9亿美元。

 

Space Shuttle

        Space Shuttle is a piloted and partially reusable space vehicle .It can be launched  vertically like a launch vehicle ,operate ,on orbit like a spaceship and land horizontally like an airplane. The space shuttle may contain up to 7 people , which include 3 shuttle crewmen[1 commander and 2 pilots] and 4 technological engineers or experts. It can complete many missions, such as releasing ,recovering , maintaining a satellite and conducting all kinds of microgravity science experiments . The space shuttle consists of three main parts :orbiter ,solid-propellant boosters and external tank .It is 37 meters long in fuselage ,27 meters wide in wingspan , and its total weight is about 68tons .    Shuttle Challenger is the third space shuttle of America, which is worth 1.2 billion dollars .From its first flight on April 4 , 1983 through January 28 ,1986,it had completed 10 flight missions . The fee for each flight is about 290million dollars .     


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