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size=2>Joe, DWG is for the metal guys in the
group.<BR><BR>Here is my production drawing of a kortnozzle make mostly
from
three sheets of metal. <BR>One cylinder and two conus.<BR><BR>I simplied
the
internal aft ring to a cylinder so it do not matter which propeller
seats
in the nozzel and which depth. Plates should be deliver by a
watercut or
laser cut shop. Or for hardcore psubers can be made with a grider or a
electric
saw or a torch. <BR><BR>Cad Drawing can be easy scale up and down.
Bigger one
can be make from stainless steel, free flooding with a small
(Epoxy-)filler job on the entrance to be perfect. But even without
the
filler job it is a nice nozzle. Small units can be made
from
brass plates hard soldering together. <BR></font><BR>Please not: To be
work
perfect with the nozzle the propeller need at the tip ends a small
tolerance to the nozzle. Means the tips of a normal free
running propller
has to be cut to a perfect cycle as shown in the drawing. Anyway a
propeller
in a kortnozzles needs a little higher rpm than the same propeller
as free
runner. So thats fits. <BR><BR>Kort nozzle will and thrust to our props
below 10
knots. At higher ship speeds the surface drag of the nzzle will eats the
effects. But nearly all our boats are below 10 knots. <BR><BR>Hi Emile -
maybe
there is a small market for Psubs-made from-massive-Delrin
nozzles..
<BR><BR>Marc or anybody - <U>do you have any information about a
kortnozzle with
the propeller running reverse</U> ??<BR><BR>All the best Carsten
<BR>
<BR>"Joe Perkel" <josephperkel@yahoo.com> schrieb:
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><div style="RIGHT: auto">Im going to try to attach an image. Here is
what Ive done for a MK 101 Kort Nozzle with .11 tip clearance for an 11"
prop. </div>
<div style="RIGHT: auto"> </div>
<div style="RIGHT: auto">I need to finalize body attachment, the
streamlined ABS struts have threaded rods through them.</div>
<div style="RIGHT: auto"> </div>
<div style="RIGHT: auto">Joe</div></div>
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<font face="Courier New" size=2> </font><font face="Courier New"
size=2><br><br>-- <br><BR>Carsten Standfuß<BR>Dipl.Ing.Schiffbau @
Meerestechnik<BR>Heinrich Reck Str.12A<BR>18211 Admannshagen<BR><BR>0172
8464 420<BR>WWW.Euronaut.org<BR>Carsten@euronaut.org</font></body>
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