01-14-2007, 09:43 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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Andromeda Update for 1-14-2007, Part II
I was right in thinking the CG would be adversely affected by the change in weight. Look at these numbers:
OLD:
Weight: 1.9115 oz
CG: 14.845" from tip of nose cone
CP: 18.5037" from tip of nose cone
Margin: 3.52
NEW:
Weight: 1.7757 oz
CG: 15.6683" from tip of nose cone
CP: 18.5037" from tip of nose cone
Margin: 2.73
Just in this change in the weight of the nose cone, the CG was pushed backwards nearly 7/8".
Now, interestingly enough, it suggests that I might still be able to launch Prototype #1 and achieve something near the original projected altitude. I just need to compensate with some ballast, and plug those shrouds. The school where I fly will be out tomorrow for MLK day, but we're expecting rain and colder temps by evening. It may be a crap shoot, but I'm going to try and get in a couple of flights with it if possible.
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