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航天飞机的新型铝锂合金外贮箱早在８０年代初设计自由号国际空间站时，就发现其重量超过了航天飞机的承载能力，因此需要减轻航天飞机的结构重量。ＮＡＳＡ采用马丁公司新研制的“Ｗｅｌｄａｌｉｔｅ”２１９５铝锂合金作为航天飞机外贮箱的材料。这种合金的成分中含有１...
As early as the 1980s when the space shuttle’s new aluminum-lithium alloy outer tank was designed by the International Space Station, it found that its weight exceeded the carrying capacity of the space shuttle, and therefore the weight of the space shuttle’s structure needs to be reduced. NASA uses Martin’s newly developed “Weldalite” 2195 aluminum lithium alloy as the space shuttle outer tank material. The composition of this alloy contains 1 ...