I’m thinking about my next build(s)........
For this project, I'm trying to use Fusion 360.
Thanks - I needed that! Creo/Solidworks vs Fusion 360 is like comparing a BMW to a Honda Accord. They'll both get you where you're going, one of them just gets you there with a lot more refinement and comfort. The biggest struggle so far has been getting the constraints and dimensions nailed down. It's almost like the Fusion 360 team looked at how things were done in EVERY major modeling package and did it as differently as they could...Wooph, that does sound like an ordeal.
Good luck!
what are they made of.Started assembling the grid fins for my Anti-Virus rocket design...
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what are they made of.
WOW. Makes me mad actually.Worked on another scratch build. Went over to Balsa Machining. Bill was telling me the cost of balsa has tripled recently. Apparently wind turbine blades have a balsa core and that's where all the balsa has been going. Learned something new.
As ballast, is what I was toldI heard balsa was also being used as insulation on tanker ships(?).
Yeah, seeing the price of our toys go up just because someone wants to help save civilization as we know it is just infuriating. I mean, how dare they?!WOW. Makes me mad actually.
Trivia of the day: Balsa is a hardwood.
Professionally, I use Creo. Equation driven shapes can be accomplished using a function called TRAJPAR (trajectory parameter). I've found it to be a bit fussy on past projects. An easy work around is to use Excel to generate an array of points, import that array into Creo as a .pts file, and create a spline through the points. The result isn't mathematically perfect but definitely close enough for a 3d printed nosecone.
For this project, I'm trying to use Fusion 360. Even with the recent changes in Autodesk's license for home use I feel it is a good option for hobbyists, especially if you have a CNC machine. The approach to modeling in Fusion is different than in Creo and it is taking a fair bit of effort for me to learn. It does look like I'll be able to use an imported points file and create a spline through it in Fusion, I just haven't done it yet. I haven't found a direct equation-to-curve function in Fusion, Not saying it isn't there, just haven't found it yet. I wish Creo had a home use license similar to Fusion.
If anybody is looking for the Von Karmen equation, I found it here:
https://en.wikipedia.org/wiki/Nose_cone_design
I love DavidQ's baffle design, but gluing it in always seemed a bit dicey to me. Unlike baffles inside couplers, which are incredibly easy to glue, with the Qualman design you have to get the glue in the right spots, and that's often way down in the tube. What approach did you use exactly?
1. Was this a custom baffle or is this available for sale?
2. Let us know the result after a couple of flights. If it works I might buy a few.
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