Is a custom fin design importable into RockSim?
View attachment 396006
Mind you that's for OpenRocket...If you can get a picture of the profile of the fin shape with the fin root at the bottom edge of the image, you can use OR's import feature. K'Tesh has an excellent tutorial on the process (Here).
No image fakery needed.
custom fin set > plan points
It's not image fakery, it's using an image as basis for creating the plan points. For complex curvy fins it can be *much* quicker and easier (and more accurate) to just import that way.No image fakery needed.
custom fin set > plan points
No matter what the Sims say, Swing Test !
Dave F.
That's a 50 lb. rocket....
I draw it in AutoCAD, positioned at 0,0, in millimeters. Once drawn, use the DIVIDE command to place nodes about a CM apart. Using the LIST command, pick the points in order, then paste that output into WORD to clean out the command prompts and other garbage. Replace the carriage returns with whatever the delimiter is (Pipe "|", I think, I'm at work and can't open DropBox to look). Open RockSim, create a dummy custom fin with a recognizable name - save and close. Open the RKT file in a text editor (doesn't have to be Word for this step), find my fin name and paste my pointlist, overwriting the dummy pointlist. When I did LunaBug (available on RocketReviews), I split the fins into 4 pieces in order to get the openings simulated.
You can make it a little easier on yourself in AutoCAD by drawing a PLINE through the points (just turn on the object snaps for points and it's easy) and listing the PLINE. Then the x-y coordinates come out in a single list without a lot of other garbage.
When I go that route, it usually involves curves. PLINE lists only account for Vertices, Center and Radius.
Actually,That's a 50 lb. rocket....
Actually,
Marvin was 550 pounds loaded
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