Basing the general appearance on the fan based engines from
the game ‘Guns of Icarus Online’ I utilised a cylinder to begin with and
extruded each section to the approximate size I felt was appropriate. Scaling
was all done by eye, rather than trying to work out precise measurements. Once
the cylinder was the desired shape the fan blades were constructed, these
comprised of two cylinders one vertical and one horizontal. The horizontal one
was manipulated to the shape of a propeller blade and the vertical one received
an inset and a negative extrusion. Attaching the two together was done via
removing some of the polygons and then target welding the vertices together.
The final touch was to add a mesh smooth modifier.
Theoretically this engine can be placed on any of the ships
we produce, however the polygon count is rather high at 60,000+ therefore some
simplification may prove necessary. The propellers are able to rotate and the
vented fan on the rear also rotates. Steam can be added in the form of
atmospheric apparatus but again due to limitations when rendering it may be
necessary to simplify things and leave steam detail off. The rivets could also
be removed, they make for a nice piece of extra detail but if necessary they
may have to be removed for the sake of saving rendering time.
This initial colouring was based on the underside of the
Akagi Carrier, which appears to have golden propellers and a red underbelly.
The engine is in several distinct pieces. The fan blades are
all separate in order to allow them to spin around the prop shaft; although
technically inaccurate it seemed the most efficient way to have the spinning
blades. The vent fan is also separate in order to allow it to spin as well, at
the moment it spins at a lesser speed than that of the fans. The framework to
support the engine and attach it to the ship is also separated from the main
bulk of the engine; this could be attached later on but with the precise
dimensions of any ship unknown it gives greater flexibility to adjusting later
on.
Constructing the entire ship seemed a little daunting
therefore doing the single engine which can be duplicated on the rear of the
ship seemed a good idea to make the task a little more manageable.
Ideally a second type of engine will be made to go along
with this one. This engine was meant to be smaller and designed for turning
thus it would be located on the Port or Starboard sides of the Stern, where
increasing the speed of a side would cause the ship to turn. The second type
would be a larger version which would be considered a primary engine that
provides the bulk of forward thrust.
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Initial rough sketch of the Port/Starboard steering engines. |
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Initial rough sketch of the Main engine |
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A group of images utilised when roughing out the shape of the engine |