For the record, it's BLACK BRANT ( as in "Goose" ), not "B-R-A-N-D-T" . . .Any chance anyone could model a properly air foiled black brandt II fin.
Yes but they have a cool history!A black brant is a species of migratory goose.
The compact, rather short-necked Brant is an attractive small goose with a black head, white necklace, and rich brown body brightening to white under the tail. They winter in flocks in bays, estuaries, and lagoons, where they eat eelgrass and other aquatic vegetation. They nest in the Arctic in...www.allaboutbirds.org
I see you are doing these in OpenSCAD, I hope you will eventually post the original files. I've learned a lot about OpenSCAD by pouring over your files.Ok, here are the fins with a center split for flat printing. There are two sets of port and starboard halves, one with the flare mount, one without. These .stl files are full size. I didn't try to scale them because 1/13 and 1/6 scale are almost certainly approximations. The actual scales are probably more something like 1/13.1415962 and without those kits in-hand I can't tell you what that approximation might be. Most likely it will be the exact ratios of the body diameters. Once you have the scale you want to use, express it as a percentage and scale the .stl to that percentage in the slicer.
Scaling is simple in Prusa slicer. I've circled where the model is scaled. You can see it is scaled to 15.87% to fit the bed. It was stated the fins were modeled at 100% of original size, so just figure out how large you need them for your use.What scale were these modled in? Prusa slicer auto reduces to fit the print bed so I don't know where to start the scaling process.
Since it is intended to induce spin, I assume that is only on one side of the fin ?
Are they present on all BLACK BRANT rockets or just the 3-finned version of the BBII ?
Do you have any dimensioned data for it ?
I just have the photos that show it from a distance
A far as I can tell it was just on the 3 fin BBII