04-08-2008, 11:39 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:
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Originally Posted by James Pierson
BINGO my friend, you guessed it. I am glad you like it. A3-4T has the power but too long of a delay. The A10T-3 should be the chosen motor for this design as actual biuild wieghts are usaully heavier so I would avoid the 1/2A3T-2.
Craig what is your opinion with my chaet to the Margin reference? I just used the inside of the BT-55 tube for the reference. If I could sim the drag of the landing pads we might be able to delete an WL-7 and get some more altitude.
James Pierson
NAR# 77907
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I see what you mean...
Hard to say, JP. Using the MFD setting lowers the margin below 1.00 (about 0.74) even without the motor installed. However, using the NCBD brings it up to 2.74 with the A10-3T installed. Changing this to the URD drops it to 1.03, even though the specified diameter is exactly the same as the NCBD. I'd say it's neither, and more like somewhere in the middle.
I know it's heresy to say this, but RockSim doesn't always know what it's talking about...  |