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Old 07-16-2021, 03:11 PM   #1 (permalink)
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Submarine design and drag

Since 'drag' can be 'heard', streamlining is critical to the lowest acoustic signature and 'stealth' of a submarine.
The linked material provides fineness-ratio, pressure drag/ friction drag tradeoffs, and the difference the more organic ( expensive ) shapes can provide.
https://apps.dtic.mil/sti/pdfs/ADA428039.pdf

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