Chris- Yeah, it’s pretty marginal in OpenRocket (1 caliber at M3). Above about Mach 2, OpenRocket predicts the Cp quite a bit more aft than either the Barrowman or modified-Barrowman results that RAS gives. RAS still showed plenty stability at Mach 3 for its worst case. Honestly, I mostly scoffed OR’s results because of several posts Chuck’s made on RAS2’s improvements. Sooo, yeah, maybe that was a bad idea.
It’ll be a while before I can try this rocket again because of our typical Vegas waiver. Maybe next time I’ll bring a couple rockets instead of just one. Having different fin sizes and/or CGs would be nice. I should have some time to run some CFD before then too. Keith- I just officially started construction on my 24mm rockets tonight. The fins are ready to attach…I’m 3d printing my fin alignment guides now. Long way to go before the 9th. Also, I guess it’s Spring Fling, not Springfest (oops). We’re planning on leaving Vegas next Thursday & getting to the Hartsel area on Friday the 8th. Is it that launch you’re going to or the one this weekend? I have to build a Yagi and a launch tower before then too. Go, go, go! -Bryan _______________________________________________ altusmetrum mailing list [email protected] http://lists.gag.com/mailman/listinfo/altusmetrum
