04-04-2010, 07:53 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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Thanks, Andrew!
I've made some adjustments to the file, based on the construction photos and EV's description of the build. The stability margin for this bird is about 2.13 on a B4-4, 2.15 on a B6-4, and 2.02 on a C6-5. This works out well given EV's description of the flight as being straighter than he anticipated.
EV, if you see anything in this file that doesn't match the prototype, shout!
Length: 19.77"
Diameter: 1.352" (BT-55)
Fin Span: 9.20"
Weight: 2.20 oz
Simulation runs shown below. All three listed engines work from a 36" x 1/8" rod.
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