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How to design an
F 341 HDMS Absalon size 1:75 frigate, with ASW capability
This homepage is a description
of how to build a scaled model of the F341. The model is designed for
ASW, as I expect the ship to look, after the update with TAS and ATAS in
a few years.
Some of the drawings is done in
scale 1:1 and afterworth scaled to what I can manage in my 3D printer
1:75, equal to a total model length of around 2 meters (78 inch). Other
parts are designed directly in a 1:75 scale.
All the material used to design
the model, is public, and the internal parts are optimized for use with
small servo motors. The internal "hidden" parts are not identical to the
original ship.
I have emphasized that all
essential parts can be controlled (moved) via an RC remote control
system. (guns, radar, TAS system, gates, RIB, rudder, bow propeller,
etc.)
During 2022, the frigate F341,
has undergone a significant update, stability has been improved
and close in defense capability has been enhanced with the installation
of a Laser CIWS (see main overhaul 2022)
Information and link to the real world
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F341_scale model
I can receive telemetry
data from the ship, e.g. power consumption on main engines as well
as battery data. In addition, it is possible to receive video
from the ship in the sailing direction via a separate 5.8 GHz link. |
.close-ups of the bridge
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Pictures
from the first test sailing in a lake
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The first thing I drew was all frames, the outer contour is
given, but the inside must be adapted to all the parts that will
later be built into the ship.
It is very difficult to wait to 3D print the parts that you
have already drawn, but everything has to be thought through,
otherwise there is a good chance that you will have to draw it
all over again.
I use "PETG" as the standard 3D material because it is very
strong, and fairly easy to use.
The disadvantage of using PETG is that it is very difficult
to glue on, so I usually use a solvent. (Methylenchlorid) CH2Cl2
- and of course with the necessary respiratory protection
The upper part of the ship
are coated with 1.5 mm ABS
ABS is wonderfully easy
to use because you can "melt" ABS together with PETG by using a
suitable solvent. |
The picture has a link to a small film |
The picture has a link to a small film, (continuation of
construction of the hull) |
The rudder was a lot of fun to draw, because
it is double acting where the outer part rotates much more than
the inner part. The center of the two axes is offset from each
other. It required 6 interactions before it worked
satisfactorily. See the two drawings and animation if you
click on the image.
Then I started drawing each frame, with
room for sonar, main motors, gearbox, batteries, servos, etc.
Design of cannons, the main cannon is a 5 "127mm and
then the F341 also has two 35mm CIWS (Close in Wepon System) |
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starting point is 2d Drawings from the manufacturer BAE Systems,
then I replaced the inside to fit two small servomotors for
horizontal and vertical rotation.
In the small 35mm cannon there is only room for one
horizontal servo.
more information on 35mm CIWS
Technical data (PDF) |
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Click on the picture to see a small video |
F341
Specification
this is a comparison between
the real ship and the model |
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On the rudder you can see that the parts are 3D printed, even
though the reading is better than 0.15mm
Click on the picture to see a small video |
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