03-15-2010, 07:38 AM
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BARCLONE Rocketry
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Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
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Quote:
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Originally Posted by gpoehlein
I can't really tell much difference between 1 & 2, but they both look pretty good. I think what Kevin was really talking about was turning the tail upside down so the vertical control surfaces (rudder) are opposite the boost pod. Also, how many degrees of dihedral do you have there. Rule of thumb is that a dihedral of 15 degrees works about the best, and the dihedral should be wrapped around the boost pod (like you've done). Personally, I like simple dihedral such as you have in versions 1 and 2, and I find complex dihedral as in 3 a bit tedious. Again, the total dihedral should be about 15 degrees.
Greg
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For the Mk III version, the main wing panels are set for 10 degrees total (+ & - 85 degrees), and the polyhedral tips are at 90 degrees to each other. The stabilizer is set at 30 degrees (+ and - 75 degrees), and the rudders are at true 0 degrees.
The only difference between I and II was the location of the stabilizer attachment, and the shaping of the boom. The wing remained the same. There was no difference in the dihedral between any of the three.
As soon as I get some "housework" done (reconstruction of a wall in my computer room) I'm going to build one of each to see how they fly. I'm starting to get itchy fingers for this project...  |