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keyle
on March 18, 2019
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Nike and Boeing Are Paying Sci-Fi Writers to Predi...
It has to be silent(ish)! and and and it should work with reverse-gravity something something :-)
DennisP
on March 18, 2019
[–]
Well it's not antigravity but this sound-blocking tube might help make ducted fans quieter:
https://www.fastcompany.com/90316833/scientists-have-discove...
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