08-22-2005, 12:28 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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EIRP #77 Stratos
A question about the stability of this model came up on the OldRockets list, and I wanted to see what the issue was. The model, as described in the plans, is tail-heavy and needs ballast to make it fly correctly.
Attached is a quickie-RKT file minus the tip fins and the elevator. While the tip fins do correct for yaw, the elevator in this simulation would aggravate the negative balance problem. Granted, the simulation is not fully accurate for this reason, but that is a limitation of the current version of the software.
A8-3......218'........3.6 fps
B4-4......531'.......20.5 fps
B6-4......540'.......25.2 fps
C6-5......1151'......32.2 fps
C6-7......1162'......31.4 fps
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