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Good channel I watch his stuff sometimes. He has some real good videos on sonar and breaks them down to help people understand.  He was a sonar tech in the navy back in the day iirc.

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You tube video Bremspropeller minute 26’ another alternative silent propulsion the EM-Drive : another Silent aqua and further space propeller .

Home experiments:

 

 

 

Edited by RAY-EU
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