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Old 09-04-2012, 08:07 AM
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jharding58 jharding58 is offline
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Default Plotting radiused fins

I am relatively confident that this is a low priority need in RockSim, but is there the means to draw a radiused fin? While drawing the AIM-4 I encountered the forward fins; these bring a 3/4" radius component. I cheated by defining them as a short span ellipse, but it still looks wrong. Short of plotting a radiused curve as a custom fin is there a means of doing this in the current version of RockSim
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Old 09-04-2012, 03:05 PM
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Quote:
Originally Posted by jharding58
I am relatively confident that this is a low priority need in RockSim, but is there the means to draw a radiused fin? While drawing the AIM-4 I encountered the forward fins; these bring a 3/4" radius component. I cheated by defining them as a short span ellipse, but it still looks wrong. Short of plotting a radiused curve as a custom fin is there a means of doing this in the current version of RockSim


Which version of RS are you using? The last two versions (8 & 9, IIRC) had a radius tool built in. You select the center "point" of three in any angle, and then tell RS how many points to plot, and the radius. RS then plots out the correct curve if it can. Sometimes it gets frustrated and plots something way outside what you expect, but that's what the "undo" button is for...

Often, what I will do is work up a "good-enuff" fin plot in RS, then export the fin to Corel Draw (a vector graphics program) and clean up the plot from there.
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Old 01-04-2013, 05:16 PM
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I'm glad you asked this question and received this answer because I have been wanting to design a rocket with Flash Gordon-ish compound curves , but could never figure out how to do it on RS9....

Thanks!
Steve
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