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  #1  
Old 11-20-2005, 12:28 AM
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Tau Zero Tau Zero is offline
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Question RockSim 8: Drawing "Curvy" Fins

Hi, all! This is basically a follow-up to the threads about how difficult it is to draw "non-standard" fins in RockSim, and to the "Semroc SST Shuttle 1" thread where I mentioned I was trying to recreate a Centuri Quasar from the 1972 catalog. (See first two images below.)


I took the fin pattern from this link at JimZ:

http://www.dars.org/jimz/kc-7.htm

...and traced it on graph paper with 1/4" squares (Figure 3). I've managed to (accidentally) round the corners of some fins in RockSim, but I didn't really figure out how to do it predictably. So I'd like some help with "curving" the angle down by the aft end (back side) so it's smoother and more streamlined... like the original in the link above.


I've attached the RockSim file below. Sandman, can ya help me here?


Thanks in advance,

--Jay
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Name:  Centuri_Quasar_Jay_01_Edit.jpg
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Name:  _Quasar_Jay_Aft.jpg
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Name:  QuasarFin_onGraphPaper_150dpi.JPG
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File Type: rkt Centuri_Quasar_Jay.rkt (50.7 KB, 102 views)
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  #2  
Old 11-20-2005, 08:36 AM
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sandman sandman is offline
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I don't know where you would got the idea that I am a RocSim Guru...I appreciate the vote of confidense but really all ever do is click stuff 'till it works.

BUT!!! In this case I DO know the answer!!

When you are in the "Edit Fin set" window, go to the top and click on the little icon of a drafting compass. This will give you the option of making a radius of the last location point you made.

I played with it a bit but you can easily refine it to your taste.

I hope that helps.
Attached Files
File Type: rkt Centuri_Quasar_Jay[1].rkt (44.4 KB, 102 views)
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  #3  
Old 11-20-2005, 04:19 PM
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Tau Zero Tau Zero is offline
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Thumbs up "The feen, she eez so curvee..."

Quote:
Originally Posted by sandman
I don't know where you would got the idea that I am a RocSim Guru...
I appreciate the vote of confidense but really all ever do is click stuff 'till it works.
(pretending to think really hard) Um... 'cause you know stuff I don't, and you've been really helpful before?


Quote:
BUT!!! In this case I DO know the answer!!
See? This proves my faith in you was justified.


Quote:
When you are in the "Edit Fin set" window, go to the top and click on the little icon of a drafting compass. This will give you the option of making a radius of the last location point you made.
I played with it a bit but you can easily refine it to your taste.

I hope that helps.
Now, see... *that* was what I needed to know! Thanks for your help, as always!


Cheers,

--Jay
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Old 11-20-2005, 04:55 PM
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sandman sandman is offline
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Like Bullwinkle Moose once said, "Ohhh...don't know my own strength."

Yer welcome.
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