10-30-2010, 11:27 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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I made some adjustments to the aerodynamics, and found something of a "sweet spot" for both the Estes B6-4 and the Quest C6-5. This can be called the Mk II version. Please note you will need a 48" x 3/16" launch rod now. It takes a full 30" of guide length to reach safe flight V, but with the launch lugs so far up from the rear edge, you don't have enough length on a standard rod. Better safe than sorry.
Length: 49.50"
Diameter: 1.04" (ST-10)
Fin Span: 10.08"
Weight: 4.31 oz
B6-4.......322'......Dv 16 FPS
C6-5Q......800'......Dv 27 FPS (Reef the parachute shrouds)
These values are averages across six simulations with each set of engines. Due to file size limitations, I had to reduce the number of runs in the posted file by half. Be sure to run your own simulations and calculate the averages to get a bigger picture.
Also, the Estes B4-4 was removed as the Dv numbers were beginning to rise well above the original values.
Enjoy!
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