02-17-2009, 12:11 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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A Second Answer to the Challenge
Solo, here's a two-engine cluster for your "advanced" group. I increased the diameter to ST-13, and used four fins of 1/8" balsa instead of three. The model takes a 16" parachute to recover at about 12 FPS on landing.
Length: 40.40"
Diameter: 1.34" (ST-13)
Fin Span: 6.84"
Weight: 2.50 oz
Launch rod: 36" x 1/8"
(2) A10-3T......256'......Dv 5 FPS
Hope these designs fit your needs!
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