[PSUBS-MAILIST] bow window

Sun Nov 2 17:25:42 EST 2014

LOL--------------------------------------------
On Sun, 11/2/14, Hugh Fulton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] bow window
 To: "'Personal Submersibles General Discussion'" <personal_submersibles at psubs.org>
 Received: Sunday, November 2, 2014, 4:45 PM

 Well that may give it a
 tendency to have a great view of the bottom.

 Hugh

 -----Original Message-----
 From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
 On Behalf Of hank pronk via
 Personal_Submersibles
 Sent: Monday, 3
 November 2014 8:44 a.m.
 To: Personal
 Submersibles General Discussion
 Subject: Re:
 [PSUBS-MAILIST] bow window

 Vance,
 One
 down side to this idea is weight, a 37 inch di by 7in thick
 window is
 about 284 lbs.
 Hank--------------------------------------------
 On Sun, 11/2/14, Vance Bradley via
 Personal_Submersibles
 <personal_submersibles at psubs.org>
 wrote:

  Subject: Re:
 [PSUBS-MAILIST] bow window
  To:
 "Personal Submersibles General Discussion"
 <personal_submersibles at psubs.org>
  Received: Sunday, November 2, 2014, 2:36 PM

  Which

 viewport?

  Sent from my
  iPhone
  On Nov 2,
  2014, at 2:30 PM, Cliff Redus via
 Personal_Submersibles
 <personal_submersibles at psubs.org>
  wrote:

 On
  this calc, the operating depth is 350 ft
 and the crush depth  of the
 viewport is
 2130 ft.

  Cliff

      From: Vance Bradley via

 Personal_Submersibles
   <personal_submersibles at psubs.org>
   To: Personal
  Submersibles
 General Discussion <personal_submersibles at psubs.org>

   Sent: Sunday, November
  2, 2014 8:27 PM
   Subject:
 Re:
  [PSUBS-MAILIST] bow window

  Operating 350
  feet. Test
 depth 500.

  Sent
  from my iPhone

  On Nov 2,

 2014, at 2:19 PM, Cliff Redus via Personal_Submersibles
 <personal_submersibles at psubs.org>
  wrote:

  Is
 the design
  depth 350"?
  Cliff

      From: Vance Bradley via

 Personal_Submersibles <personal_submersibles at psubs.org>
   To:
   Personal Submersibles
 General Discussion <personal_submersibles at psubs.org>

   Sent: Sunday, November
  2, 2014 8:06 PM
   Subject:
 Re:
  [PSUBS-MAILIST] bow window

  Cliff,
  I'm thinking full
 hull diameter, 36" or  thereabouts.Vance

  Sent from my iPhone

  On Nov
 2,
  2014, at 2:02 PM, Cliff Redus via
 Personal_Submersibles
 <personal_submersibles at psubs.org>
  wrote:

  One
 of my
  goals with the R500 was to cut cost
 and a big cost is the  viewports.
 The upper portion of the pressure hull that
 has  the viewports is 36" x 0.25
 A516-70 pressure vessel  steel. The design
 depth is 500 ft.   I like the
 optics of 
 flat viewports so I have one 24" diameter x 
 4" thick acrylic
 viewport and three
 smaller 12"
  viewports.     I ran
 the calcs using the PVHO flat  viewport calculator
 that Jon Wallace implemented at the
   PSubs site.  I have access to abrasive
 water jet so I was  thinking of
 jetting
 these out of off the shelf acrylic and  then having a
 machine shop
 dress the edges and cut the 
 chamfers. I would need to get the viewports
 annealed after  final machining. I am hoping I
 can
   talk Gregg Cotrell into doing this
 for me as he is Dr.
  Acrylic. PVHO has
 detailed info on what the viewport  housing seat needs
 to
 look like.
  So to me, I
 don't see any reason
  Vance you could
 not use large flat viewport on the bow.  You just have
 to
 do the PVHO calcs on the thickness and 
 housing dimensions for your design
 depth. 
 You would need  to design the housing to smoothly
 transition the
 stresses to  the forward
 head and run an FEA to confirm stresses in the
 viewport and housing.  I don't know what
 size you were  thinking about or
 the design
 depth but it would need be  thick.

 Cliff

          From: hank pronk
 via
  Personal_Submersibles <personal_submersibles at psubs.org>
   To: Personal
  Submersibles
 General Discussion <personal_submersibles at psubs.org>

   Sent: Sunday, November
  2, 2014 7:02 PM
   Subject:
 Re:
  [PSUBS-MAILIST] bow window

  Lets wait and see what the engineers think. 
 Cliff is going with a flat
 port on the R500
 I believe.
  Hank

 --------------------------------------------
  On Sun, 11/2/14, via

 Personal_Submersibles <personal_submersibles at psubs.org>
  wrote:

 Subject: Re:
  [PSUBS-MAILIST] bow window
   To: personal_submersibles at psubs.org
   Received: Sunday, November 2, 2014, 12:20 
 PM

   That's my
   kind of madness.
   Vance

   -----Original

 Message-----

   From:
 hank pronk via
  Personal_Submersibles
   <personal_submersibles at psubs.org>

   To: Personal
 Submersibles
  General Discussion
   <personal_submersibles at psubs.org>

   Sent: Sun, Nov 2, 2014
 11:53
  am

   Subject: Re:

 [PSUBS-MAILIST] bow window

 Vance,
   That is a question for the
 engineers of  coarse.  I look at
   it
 like the hull is a

   big
 conning tower.  Just look how

 Gamma's CT is built,
   instead of a
  hatch it is
   a flat port. 
 I know I may be
  over

 simplifying it.  The
   engineers are
  probably
   thinking I am mad
 but.....
   Hank

 --------------------------------------------
   On Sun, 11/2/14, via
 Personal_Submersibles
 <personal_submersibles at psubs.org>

   wrote:

    Subject: Re:
 [PSUBS-MAILIST] bow window
    To: personal_submersibles at psubs.org
    Received: Sunday, November 2, 2014, 11:13 
 AM

    Hank,
    It's not crazy at all. I just
  hadn't
    thought of it.
 I wonder if the
  stresses

 imposed at test
    depth would be too
 high
  for the 1/4" hull the thing
    would be
  welded to.
 It's an interesting thought,

  though.
    Something to
 consider,
  definitely.

    Vance

   -----Original

 Message-----

 From:
  hank pronk via
 Personal_Submersibles

 <personal_submersibles at psubs.org>

    To:

 personal_submersibles
    <personal_submersibles at psubs.org>

    Sent: Sun, Nov 2,
 2014
  10:49 am

    Subject:
  [PSUBS-MAILIST]
 bow window

  Vance,
    Have you looked at
 a large full
  size flat port for the
   front
    of your K350. 
 I
    did
  that with one of
 my early subs.  I had a 24 inch flat

 port 4 inches thick
    with
  a 24 inch protection dome.  The optics were
 stunning,
    nobody believed it
    was 4
  inches thick.  I
 checked with
   Reynolds Polymer and a
   7
    inch thick 37inch
    square
  unpolished piece is
 3,000 dollars US.  Is that just
    crazy
 talk or what. 

  Hank

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