Sorry….above M2, OR predicts Cp quite a bit more forward than RAS. Worse stability. You know.
> On Jun 1, 2018, at 12:21 AM, Bryan Duke <[email protected]> wrote: > > 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 _______________________________________________ altusmetrum mailing list [email protected] http://lists.gag.com/mailman/listinfo/altusmetrum
