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回答: 反华骗子整天意淫:美国20多年花了几百亿美元想拥有这技术没成功 由 笑鸠 于 2019-04-18 18:16 ULA and the Pentagon have maintained that Russian engines are cheaper than the US alternatives. The RD-180 is used for the Atlas rocket, the workhorse of the US space fleet. A total of 70 Atlas V rockets with Russian RD-180 boosters had been launched successfully so far. If the Pentagon abandons the RD-180 engines, the cost of launching key satellites will skyrocket. For instance, the only alternative for launching large satellites into high orbit is Delta, which costs about a third more per launch. | |||
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