10-03-2006, 03:25 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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Quote:
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Originally Posted by Eagle3
Some guys in JMRC are interested in drag racing 4" Fat Boys. When they couldn't find a rocksim file I volunteered to make one. Might as well share it here too.  Only ran one sim and that was with a CTI G69. Nice flight to just over 2k. |
Buzz,
Only noted one "Oh, no, not again!" in the 2D image. Your margin of stability without the motor is less than 1.00 -- the image shows 0.89 -- and that's going to be a problem. You need to add the motor and re-balance.
Make the nose cone hollow, and shove the parachute as far forward as you can before adding extra ballast; that will help reduce the amount of lead weight you'll need to add. I'm guessing you'll need several ounces of sinker-shot, since the Fat Boy is such a short-coupled model. (Speaking as one Fat Boy to another...  )
Still looks like a fun challenge, though! |