MarkABrown
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- Jul 12, 2001
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I'm designing a Level 2 project and have a question about fin thickness. This rocket will have 2 close proximity fin sets with the rear fins swept forward. I know that this configuration greatly increases the stress on the fins so I want to design these fins to have VERY great strength. My first choice was to make them out of 1/8" G10 fiberglass but, that stuff is so expensive! I could easily have $100 stuck into just fins! So, I started looking at 1/16" G10. This is more reasonably priced but, I'm concerned about fin flutter at high speed.
So, my questions are... Do I need to be concerned with fin flutter with 1/16" G10? Am I overbuilding using G10 (ie. Can I get away with using 3/16" Aircraft Plywood for the fins if I glass them)?
So, my questions are... Do I need to be concerned with fin flutter with 1/16" G10? Am I overbuilding using G10 (ie. Can I get away with using 3/16" Aircraft Plywood for the fins if I glass them)?