Subject:
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Re: Structural engineering on large Lego spacecraft.
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Newsgroups:
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lugnet.space
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Date:
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Thu, 27 Sep 2001 02:57:57 GMT
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Viewed:
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328 times
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This is an interesting subject!
The structure you choose has a lot of subtle effects on the way your ship
looks in the end. As a more pragmatic designer, I believe that the function
defines form, and keep flourishes to a minimum.
In lugnet.space, Jordan Greer writes:
> When I look at a lot of people's ships, they seem to use lateral cross-beams
> with either no spinal support or some to help manage stress on the frame...
> What I'm wondering is how effective is that for you guys?
One of the more common design techniques I have noticed is using technic
beams as a frame under the floor. I use this myself most of my large ships.
> My largest ship (7
> or 8 pounds) uses lateral cross-beams with 2 independent spines, it works
> pretty well, but not at well as I'd like..
you should post a pic showing what you are doing, because if it is properly
designed this sounds like it should be enough to keep your ship strong.
> Anyhow, how do you guys manage the structural integrity of large ships?
My largest ship (upwards of 85 pounds) was divided into 3 sections, each one
used floors set over technic beams, and mostly 2 brick wide interior walls.
The interior was compartmentalized to maximize stability and interior and
exterior wall braces were used for z axis strength. The outer hull was
attached via technic pins and was modular for easy access.
> And how much does the frame warp?
I had no problems with the frame warping at all, even though the middle
section was 4 feet long, 2 feet wide, and 1 1/4 feet tall.
I find that grids of technic beams and plates are the keys to stength. I
use lots of 2x plates to strengthen the floors. For profoundly strong
ships, a layer of plates on the bottom, a grid of 2x plates in the middle
and a layer of plates on top the same as the first layer is quite effective.
I also used baseplates as part of my floor design. I created a border of 2x
plates offset 1 brick from the edges of the plate all the way around. Then,
a 1x border was added at the same level as the baseplate, and another 2x
border was added under that. This creates what looks like a baseplate with
edges that are a 2x brick, extending 1 plate above, and 1 plate below.
I think most people have seen it, but here is a gallery that shows the ship
I am talking about:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=3036
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=3797
hope that helps you!
cheers!
Joel Kuester S U B T E R F U G I T I V E S
http://minispy.tripod.com/secret/index.html
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Message is in Reply To:
 | | Structural engineering on large Lego spacecraft.
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| When I look at a lot of people's ships, they seem to use lateral cross-beams with either no spinal support or some to help manage stress on the frame... What I'm wondering is how effective is that for you guys? My largest ship (7 or 8 pounds) uses (...) (23 years ago, 24-Sep-01, to lugnet.space)
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