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| Spin Controls |
In the last slide you might have noticed that when you changed the spin from 0.0 to 1.0 the Slip Band Spin Calc Opt item disappeared. It is not needed if the spin is 1.0. If the projectile has a "slip obturator" and the exit spin is some fraction less than full spin (input is < 1.0), an optional input will appear below the "Exit Spin Ratio" input slot, as shown in the figure below. The options are chosen from a pull down menu which you see in the figure.
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