[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PSUBS-MAILIST] S101
Hello Carsten,
Nice work Carsten and crew. Regarding
the trim weight pic, I take it that you bolted together a couple of steel
plates for the weight, instead of using batteries like on the Alicia
sub?
Regarding the flanges, I was watching the
Alicia build team align the bolts on the main steel pressure hull flange, and I
noticed that it was really hard to not chip the paint on the flanges as the
close tolerance bolt holes received the stainless steel bolts. This is one
reason I was thinking of using stainless steel for the flanges. Perhaps a thin
nylon bolt shaft sleeve and washers would limit the paint chipping problem. Also
if the sharp edges of the bolt holes and O-ring groove were rounded over it
would help with paint chipping and bolt alignment. I had seen the pic of your
flange before and wondered what the extra weld seam was for on the outer skin.
Your notes cleared that up for me. I should of recognized what it was since I've
seen and heard about that method before on smaller projects. I take it that
doing it this way allows you to take a smaller assembly to be placed on a CNC
milling machine? Did you do the same process with the other flange using the
extra weld. For the bolt holes, did you drill them before or after you
welded the flange to any thing else? Did you drill the bolt
holes with both flanges clamped together? Have you chosen a type and grade
of bolts and washers yet, and are you planning on using nylon washers against
the paint?
I wish you and your crew the best of luck
with your diver lockout test to 468 PSI / 32 Bar.
Regards,
Brent Hartwig
----- Original Message -----
Sent: Friday, June 29, 2007 5:01 AM
Subject: Re: [PSUBS-MAILIST]
S101
> Hi Brent, I response in pictures.. regards Carsten
>
>
www.euronaut.org/content/upload/notes/IMG_2489a.JPG
>
> www.euronaut.org/content/upload/notes/113-1333a.JPG
>
> The o-ring is that thin to prevent that the
flange get to big..
> Stainless steel would be better for the o-ring side
of the two flanges
> but was to expensive on 2500 mm diamter and 30 mm
strong plate.
>
> Tomorrow we have our Crew-Meeting 2007 and will
build out
> all the interior-equipment of the diverchamber.
> Then pressurized the diverchamber to 1050 feet with water.
>
Will be the final test before we sandblast the inside
> and paint it
final.
>
> regards Carsten
>
>
> "Brent
Hartwig" <brenthartwig@hotmail.com>
schrieb:
>>
>>
>>
>>
>>
>>
>> Greetings Carsten,
>>
>> I've been
meaning to ask you and Peter about your bolted flange assembly for the machinery
compartment. I know you have to machine a O-ring groove in, but did you have to
machine the mating surfaces of the two flanges before and/or after welding them
to the outer hull steel? If so how did you machine flat that large of a surface,
as well as the O-ring groove? Did stitch welding significantly help in
preventing heat from warping the metal? Would clamping the first flange to be
welded onto a much thicker flat steel plate before welding solve the warping
problem? Then clamp and or bolt the second unwelded flange to the welded flange,
and then weld it? What thickness and type of steel did you use? I've seen were
on smaller flanges, builders used stainless steel to take care of the rust
issues. I'm not sure if they used 304, 316 or some other type of stainless
steel. I know that's a more expensive way to go, but would you guys consider it
as a good option if the funds were !
> not a big issue?
>>
>> I've been looking for a practical way to do this type of machining
on large surfaces. For the O-ring grove I was thinking of using a drill/mill and
spin the flange through the cutting head horizontally using a jig the can hold
the flange and revolve at it's center point. The Alicia sub also had this type
of flange except it was bolted on the outside, and used fiberglass fairing's to
cover it.
>>
>> Peter it looks like you used a much thicker
O-ring on your flange for Kraka then Carsten. Will a thicker O-ring give you a
larger margin of err in not having the flange mating surfaces perfect? It did in
are hyperbaric chamber door. Does a thicker O-ring have a lower depth rating?
Most of the subs I've seen used a thin O-ring for some reason. Would you guys
think having a double O-ring design be a good idea to back-up the first O-ring
if it failed for some reason? What is the diameter of your O-rings, and how wide
and deep is the the O-ring groove before and after painting? Is there a formula
for the thickness diameter of the O-ring compared to the width and depth of the
O-ring groove and pressure rating?
>>
>> I'm working
on a design for a 85' plus live aboard trimaran submarine with a main pressure
hull diameter of 11'. I'm currently looking at using at least three large unbolt
able flanges so I can build the sub inland and then truck it to the water, as
well as for maintenance issues.
>>
>> Carsten I'm
interesting in your type and placement of moving trim weight(s). I've looked
through the pics and drawings I have of the Euronaut, and perhaps I'm blind but
I don't see it. Is it the batteries under the center walkway?
>>
>> Kindest Regards,
>>
>> Brent Hartwig
>>
>>
>>
>>
>>
>>
>>
>> From: MerlinSub@t-online.de
>>
Reply-To: personal_submersibles@psubs.org
>> To: <personal_submersibles@psubs.org>
>> Subject: Re: [PSUBS-MAILIST] S101
>> Date: 28
Jun 2007 19:36 GMT
>> >
>> >S 101 has also some
influence on the Euronaut.
>> >Including the moving weight and the
bolted machinery compartment..
>> >
>> >Regards
Carsten
>> >
>> >"James Huffman" <grandadmiraldonitz@yahoo.com>
schrieb:
>> > > Loving the S101. Also love the Foxtrot, Typhoon,
Type 212A.
>> > >
>> > > James
>> >
>
>> > >
>> > > Peter Madsen <peter@submarines.dk>
wrote:
>> > > Hi Psubbers,
>> > >
>> >
>
>> > > Just before design work started on our Kraka -
we had a swedish visitor - he was an ex S101 crew member and had worked for
yours with swedish submarines. The direct result of this visit was the
construction of Kraka based on the design of S101 but "amatuerised"
>>
> >
>> > > What does Psubers think of the S101 - is it a
dreamboat og too big and bulky ( if so - kraka comes out worse )
>>
> >
>> > > Personaly i am surprised to se the
resembelance...and very small size of this essentially professionel
submarine.
>> > >
>> > > Regards,
>> >
>
>> > > Peter
>> > >
>> >
>
>> > > ---------------------------------
>> >
> Jeg beskyttes af den gratis SPAMfighter til privatbrugere.
>> >
> Den har indtil videre sparet mig for at få 17294 spam-mails
>>
> > Betalende brugere får ikke denne besked i deres
e-mails.
>> > > Hent en gratis SPAMfighter her.
>> >
>
>> >
>> >
>> >
>>
>
>> >
>>
>************************************************************************
>>
>************************************************************************
>>
>************************************************************************
>>
>The personal submersibles mailing list complies with the US
Federal
>> >CAN-SPAM Act of 2003. Your email address appears in our
database
>> >because either you, or someone you know, requested you
receive messages
>> >from our organization.
>>
>
>> >If you want to be removed from this mailing list simply
click on the
>> >link below or send a blank email message
to:
>> > removeme-personal_submersibles@psubs.org
>> >
>> >Removal of your email address from this
mailing list occurs by an
>> >automated process and should be
complete within five minutes of
>> >our server receiving your
request.
>> >
>> >PSUBS.ORG
>> >PO Box
53
>> >Weare, NH 03281
>> >603-529-1100
>>
>************************************************************************
>>
>************************************************************************
>>
>************************************************************************
>>
>
>>
************************************************************************
************************************************************************
************************************************************************ The
personal submersibles mailing list complies with the US Federal CAN-SPAM Act of
2003. Your email address appears in our database because either you, or
someone you know, requested you receive messages from our organization. If
you want to be removed from this mailing list simply click on the link below or
send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of our server
receiving your request. PSUBS.ORG PO Box 53 Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
**************!
> **********************************************************
>
>
>
>
>
>
************************************************************************
>
************************************************************************
>
************************************************************************
>
The personal submersibles mailing list complies with the US Federal
>
CAN-SPAM Act of 2003. Your email address appears in our database
>
because either you, or someone you know, requested you receive messages
>
from our organization.
>
> If you want to be removed from this
mailing list simply click on the
> link below or send a blank email
message to:
> removeme-personal_submersibles@psubs.org
>
> Removal of your email address from this mailing list occurs
by an
> automated process and should be complete within five minutes
of
> our server receiving your request.
>
> PSUBS.ORG
>
PO Box 53
> Weare, NH 03281
> 603-529-1100
>
************************************************************************
>
************************************************************************
>
************************************************************************
>
>