Tuesday 11 November 2014

Payload problem.

The dimensions of this dropship were set by the size of the original Listerine bottle used to form the prototype resin cast. I continued using those dimensions when I started to draw up this CAD version for laser cutting. Partly because I am teaching myself the CAD system.

In the meantime I have changed my mind regarding the likely payload for the dropship and want to be able to include almost all my Old Crow 25mm vehicles.

So you see that somewhat large block of 'pine' in the following picture? Well, that's a block with the maximum dimensions of the vehicles I now want to be able to transport. Its the Payload Block.

I think you might see the problem.


It's a little on the large side when you slide the block into the payload location...

Compare the maximum dimensions to the relatively small rear door...

So I have some work to do.

Bear in mind I still need to be able to get a full length ramp in under the existing floor, which in itself will mean that I have a few mm less headroom than shown here.

I sketched up a simple block shape to stretch the hull around the Payload Block and I dislike it. It makes the whole ship look far to 'dumpy', the main hull becomes almost cylindrical.

So, I am doing to play around with a few options.

  1. Deepening the main hull around 10mm. This might mean retaining the same width and length or enlarging them in proportion.
  2. Lowering the rear hinge a few mm
  3. Reducing the rear chamfer on the hull shape so that the rear Door Matches the Mid section ribs. Currently the front and back chamfers on the hull are 10mm from the hull bulges, and the mid section is only 5mm.
  4. redraw the payload block so it more accurately resembles the models the ship will carry. (for example the tallest vehicle is the Gladius Medium Tank. This tank is much taller in the middle than it is at the edges, so the Cuboid Block isn't a great representation of the sapce actually taken up by the tank.
I MAY press ahead with this current version and get it made, as this could handle some of the vehicles such as the Goanna and Gecko scout cars and trucks (unlaiden). This could be a command/light version of the drop ship. A further 'Heavy' variant  could then have an enlarged hull with the same cockpit, landing gear, engines and tailfins making the whole thing modular.

Decisions, decisions.

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