[PSUBS-MAILIST] Buoyancy dynamics

[Jon Wallace via Personal_Submersibles]

 Sorry, I was not very clear, let me rephrase; you are at 300 feet depth.  How much water displacement (generally) is necessary in the MBT to get the sub heading to the surface at say, 30-60 feet per minute?  
Jon

    On Sunday, August 16, 2020, 11:08:52 AM EDT, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Jon,      I think you're better off dealing with the hyrdrodynamics of the hull shape and nose shape and sufficient propulsion rather than try to gain any small amount of drag reduction you would gain from getting the sub higher in the water .   That said,  the ww2 subs were able to go faster on the surface, but was that because they had the benefit of the powerful diesels on the surface?   
Brian
 

--- personal_submersibles at psubs.org wrote:

From: Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: [PSUBS-MAILIST] Buoyancy dynamics
Date: Sun, 16 Aug 2020 14:56:42 +0000 (UTC)

Assuming perfect neutral buoyancy, how much MBT water displacement is needed to get a sub or particular size/weight moving topside at a reasonable speed?
Jon_______________________________________________Personal_Submersibles mailing listPersonal_Submersibles at psubs.orghttp://www.psubs.org/mailman/listinfo.cgi/personal_submersibles_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20200816/16575fbd/attachment.html>