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“运载力大,一个靠大发动机大推力,一个靠大结构多装推进剂。”长征五号运载火箭总设计师李东两只手张开,在眼前拉出了一段距离,“如果火箭直径不变,就要做得细长,坚固性就差,所以长五直径到了5米。这不是优化,而是相应运载能力提高的需求。”由中国现役火箭最大的3.35米直径到空前的5米直径,大直径变成一个必须突破的屏障,设计、制造、工艺、装配需要从头开始,就像小飞机和宽体客机是完全不同的概念。
“Large carrying capacity, a big thrust by a large engine, a large structure of multi-loaded propellant. ” Long March V rocket designer Dong Li two hands open, in front of pulled out a distance, “ If the rocket diameter unchanged, we must do slender, poor firm, so the length of five to 5 meters in diameter. This is not optimized, but the corresponding increase in carrying capacity. ”" The largest Chinese active rocket 3.35 meters in diameter To an unprecedented 5-meter diameter, the larger diameter becomes a barrier that must be broken through, designing, manufacturing, crafting, assembling needs from scratch, just as small aircraft and widebody aircraft are completely different concepts.