05-15-2007, 11:26 PM
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BARCLONE Rocketry
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Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
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New Plan -- Firebird
So now we're all getting into ring fins. Cool! 
Now that I've had some good flights with Lil' Battle Axe and those fiber fins, I thought I'd cook up another design that takes advantage of the laser cutting capability of Carl's fancy Krellvenator. I call this one Firebird, but don't expect high-altitude performance. It doesn't even reach 500' on a C6 motor, according to RockSim. It's the high drag from those rings. When you look at the RKT file, take a look at the chart found in the Rocket | CD Analysis dialog. They're 95% of the total drag on this model.
Length: 17.95"
Diameter: 1.04" (BC-760)
Fin Span: 3.611"
Weight: 1.25 oz
B4-2......252'......Dv 19 FPS......36" x 1/8" rod
C6-3......464'......Dv 9 FPS.......36" x 1/8" rod
Enjoy!
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