![image.png](https://cdn.steemitimages.com/DQmdBoKhdG89EUmcmbch6Hdf81a6n7R6WLTSBETXDoaBd3E/image.png) 题图作者:Cheva 用AI创作 前天NASA的新一代登月火箭SLS搭载着猎户座飞船终于发射了。从目前来看,发射过程是很成功的,虽然拖延了很多次,但也算是取得了理想的成果。一周之后就能看到整个测试活动是否成功了。 这是继半个世纪之后美国人再次尝试登月球。看到一个有意思的说法,如果把21世纪初到上世纪60年代阿波罗登月计划这段美国航天史,倒着放会很有意思。因为在21世纪航天飞机退役以后美国人连自己的载人飞船都没有,还要租借俄罗斯的。而倒退到八九十年代,美国人造出了可以重复使用的航天飞机。再倒退到70年代,美国人发射了天空实验室空间站。再倒退到阿波罗计划的时期,美国人登上了月球。简直是一部励志史诗。当然这是倒放的结果,如果在现实中的话,就是说明美国的航天实力在不断的缩水。 其实这种情况也不难理解。因为登月竞赛发生在冷战的高峰期。是东西方两大集团对峙最激烈的时候。对对方可能统治世界的恐惧,使得美苏两个超级大国的政府获得了比以往更大的分配社会资源的权力。而它们选择的赛道就是载人航天。应该来说航天,尤其是载人航天是没有什么社会需求的。哪怕是到了21世纪的今天,也就是那么几个亿万富翁对此非常感兴趣。因为太空环境对人体来说实在太严苛了。要能保障人类在太空中存活需要额外配置太多的生命维持系统。这对使用化学燃料作为推进剂,效率很低的火箭来说,是非常不经济的。而大部分的太空应用技术只需要人造卫星就可以了。而随着冷战的缓和到结束,人们重新将目光投向了经济发展。没有了被对方统治的恐惧,民众也不会再认可政府将本来可以用于改善民生的资源,投入到毫无产出的载人航天事业上。所以美国在航天上的投入也就是一路下降,获取的成就自然越来越少。 美国这次重返月球的计划很大程度上是受到了来自中国航天事业发展的挑战。平心而论,中国发展载人航天事业最重要的目标也是为了彰显中国作为一个大国的复兴,首要的是政治宣传的价值,其次才是科学和应用上的价值。按照美国重返月球计划的时间表。这一次只是试验飞行。飞船并不会登陆月球,而且飞船上也没有宇航员,只有一个模拟假人。按照原计划,美国人这次实现载人登月会在2030年以前,也就是在21世纪20年代结束以前。但是按照现在拖沓程度很可能会拖延到2030年以后,如果最终能够实现的话。而中国的大型运载火箭已经在研制之中。官方已经表态会在2030年具备载人登月的能力。于是两家又形成了登月竞赛的格局。 不过从目前来看,这两家都将面对相当巨大的挑战,按照美国现在的经济形势。和NASA阿尔忒弥斯计划的宏大蓝图——不仅要登月,还要在月球上建立永久基地。这个项目很大概率会烂尾。而中国的航天计划在探月和探索火星等项目上都比较好的遵守了预先的时间表。但是由于中国领导人对国内国际政治和经济形势的预判相当严峻。表现出了牺牲经济发展也要维持政治稳定的倾向。这也在一定程度上限制了中国航天事业发展的潜力,虽然载人航天是由政府主导的,但它的资源必须由全社会提供。如果社会经济发展陷于停滞,想要推动如此浩大的登月工程,也将是很困难的。所以这场这场人类历史上第2次登月竞赛,谁将获得胜利现在还说不定。
author | cheva |
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新时代的航天和登月竞争开始了
author | rivalhw |
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permlink | rlku57 |
category | hive-105017 |
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root_title | 美国重返月球的计划迈出了第一步,新的登月竞赛开始了? |
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我之前看过一篇文章,提到NASA,说以前登月计划里的飞船,部分图纸都给弄丢了。。。联想到游戏《红警2》,那么经典的游戏,也是把源代码给弄丢了,就不觉得奇怪了,估计短期没效益或看不到效益,人们就太在意甚至弄丢
author | rivalhw |
---|---|
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category | hive-105017 |
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