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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,167
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missed that article, but pulse-jets are old-news.
the beauty of the scramjet is that they are very high compression engines. . . their "compression stroke" is a focused shock-wave/sonic boom.
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Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong.
Disclaimer: the above was 2¢ worth.
More information is available as my professional opinion, which is provided for an exorbitant fee. 
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