{"id":10906,"date":"2022-04-30T04:43:51","date_gmt":"2022-04-29T20:43:51","guid":{"rendered":"http:\/\/www.gocpmall.com\/?p=10906"},"modified":"2022-04-30T04:43:51","modified_gmt":"2022-04-29T20:43:51","slug":"%e8%bf%99%e4%ba%9b%e5%88%9d%e5%88%9b%e4%bc%81%e4%b8%9a%e6%83%b3%e4%b8%ba%e4%bd%a0%e5%b8%a6%e6%9d%a5%e9%ab%98%e8%b6%85%e9%9f%b3%e9%80%9f%e7%9a%84%e6%97%85%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/www.gocpmall.com\/?p=10906","title":{"rendered":"\u8fd9\u4e9b\u521d\u521b\u4f01\u4e1a\u60f3\u4e3a\u4f60\u5e26\u6765\u9ad8\u8d85\u97f3\u901f\u7684\u65c5\u884c"},"content":{"rendered":"

\"news
尽管高超音速的定义并不固定，但这个术语一般指的是可以以5马赫，即5倍音速飞行的飞机。这相当于每小时约3900英里，或两小时横跨大西洋的旅程。相比之下，历史上的协和超音速飞机以2.02马赫的速度飞行，从纽约到伦敦需要三个半小时。 虽然能够以高超音速安全载人的飞机可能至少还有十年时间，但风险投资公司正向Hermeus和Venus Aerospace这样的初创公司投入数亿美元。总部设在亚特兰大的Hermeus公司还展示了他们的超音速原型。 要使高超音速飞行成为现实，这些公司必须解决一系列的挑战。他们需要制造出不仅能将飞行器加速到高超音速，而且还能有效地保持这种速度的发动机。他们还需要设计能够承受高超音速飞行过程中的摩擦和空气阻力所产生的大量热量的飞机。 人类曾经以高超音速飞行过。在20世纪60年代，美国宇航局的X-15火箭动力喷气机曾多次超过5马赫的速度，最高时达到6.7马赫（约5140英里\/小时）。美国宇航局现已退役的航天飞机上的宇航员在返回时也会达到高超音速。
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尽管高超音速&#30340 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-10906","post","type-post","status-publish","format-standard","hentry","category-localnews"],"_links":{"self":[{"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=\/wp\/v2\/posts\/10906","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10906"}],"version-history":[{"count":0,"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=\/wp\/v2\/posts\/10906\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gocpmall.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}