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How big do the fins need to be?

April 26, 2017big fins

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How big do the fins need to be?

1 Answer

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Posted

The fins need to be big enough to separate the CoD and CoG by one to two rocket diameters. You can shift the CoD backwards by making the fins bigger or by putting them further behind but there are limits simply because the fins have a weight of their own. They also add some drag.