12-29-2006, 07:30 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:
Originally Posted by John Brohm
Hey Craig;
Best of luck; hope the weather cooperates. I'll be real interested in the flight report on the Andromeda. You have an engine in mind that you think will be the best match?
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The B6-4 has the lowest Dv for the IT version, but the B6-2 has good Dv numbers for the RT version. However, using the -2 in the IT version has very high Dv numbers, as does the -4 in the RT version. There is no "compromise" motor that has safe Dv numbers for both scenarios. The wimpy A8-3 might be a good starting point, though, as long as the parachute opens safely.
I think I'll reef a new parachute tonight, just to be safe...
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