[PSUBS-MAILIST] Kort Nozzle

[Jon Wallace]

Sounds good...we'll put them under our design section for general download.  Will your software produce some jpg or png renderings that will show the finished product as well?

Jon


--------------------------------------------
On Mon, 10/28/13, Joe Perkel <josephperkel at yahoo.com> wrote:

 Subject: Re: [PSUBS-MAILIST] Kort Nozzle
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Date: Monday, October 28, 2013, 12:39 PM
 
 Jon,
  
 The geometry is not in question if one uses the 3d
 printer (or some other machine process) to form the
 nozzle, it will be a perfect foil for that $760. I still
 need those dimensions to finalize a kort design for anyone
 who wants one. When thats done, I'll forward you the CAD
 files needed so members can download from the PSUB site to
 submit to a vendor of choice.
  
 The kort nozzle itself is simple to do CAD wise,
 its a revolve command of the foil section around the axis.
 Im working on the supports today.
  
 As for other projects for me, Ill look and see
 where, what, and when I can contribute depending on what
 ideas are thrown about and viable. All of this helps me
 when it comes time to do my own build.
  
 Joe
 
 
 
 
 
 From: Jon Wallace
 <jonw at psubs.org>
 To: Personal
 Submersibles General Discussion
 <personal_submersibles at psubs.org> 
 Sent: Monday,
 October 28, 2013 11:16 AM
 Subject:
 [PSUBS-MAILIST] Kort Nozzle
 
 
 
 
 
 
 Hi Joe,
 
 There
 are a number of enhancements that have been discussed by
 members building K-350's.  We'd have
 to collect those and see what you were comfortable with
 committing to.  Scott Waters had a list of
 enhancements/changes that he recommended as part of his
 presentation in Islamorada.  He can probably
 communicate those or I can look them up from his
 slides.  James Frankland is another person whom had
 suggestions for vessel improvements.  I'll see
 if I can get a list together and then you can decide if you
 want to invest time in them.  
 
 In regards to the kort nozzle, I believe the
 design geometry required to produce the thrust enhancement
 that has been discussed in this thread will not survive a
 hand lapped FRP approach.  Like an airfoil, any
 deviation from the design will
  reduce efficiency.  Enough deviation and
 you've spent a lot of time and money on nothing
 more than a glorified prop guard.  It would make sense
 to include as part of the kort project some means of testing
 the efficiency of the actual product so we could determine
 the effectiveness of various production methods.
 
 Jon
 
 
 
 On
 10/27/2013 9:33 PM, Joe Perkel wrote:
 
 
 
 
 
 
 
 
 
 
 Jon,
 
 The short answer
 is I dont know. But look at that Dutchman and his simplistic
 ingenuity. Thats what Im hoping for out of this group as far
 as materials and processes. Im ready to draw up whatever the
 result. Consider that there are intrepid builders of all
 sorts of things worldwide. Hovercrafters build large scale
 ducts for thier craft as a example. I'll take a
 look there tomorrow.
  
 How about half a kort??? A plug of some kind
 (construction grade foam perhaps?) to build
 up a FRP shell over then mate two halves Revelle model
 style??? Can this shape be hot wired?? What to use as a
 guide? I have ideas and questions, but I need the shop
 wizards of the world to come up with the process.
  
 As for The other things, Im ready and willing. I like
 the thruster because with my family and work time
 constraints, its not too much to chew on. I can commit to
 small projects for now, bigger later as time goes on.
  
 What would you like to see done apart from the
 thrusters?
  
 Joe
 
 
 
 
 
 
 
 
 
 
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