Thanks Keith. No need to run the ground sim with my data - I’ll be on my way back to Tennessee as soon as this Alamosa launch is over on Monday.
I’m doing some avbay leak cleanup & backup rocket prep today and plan to fly again in the morning. Sooo, I think I want to go against your manual’s recommendations and set an apogee lockout. There is a warning against using it for versions prior to 1.8.6, but that seems to be only for multi-stage flights. My sim data show about a 26.5 second apogee. The flight data looks a tiny bit better than the sim data, so as long as the launch goes ok, apogee should be in the 26-27 second range. Is my thinking right that a ~23 second apogee lockout would give me a huge margin away from the supersonic issues I’m seeing and still be enough pad before apogee for the TeleMetrum to detect it correctly? -Bryan > On May 28, 2022, at 3:01 PM, Keith Packard <kei...@keithp.com> wrote: > > Bryan Duke <br...@thedukes.org> writes: > >> The static ports are about 2” behind the nosecone. For 38mm rockets, >> this has worked well for me before. That said, this nosecone isn’t a >> super tight fit with the coupler. Since I have the coupler attached to >> my airframe and the avionics share the same air as the nosecone >> (baffled, but not sealed between the avionics in the coupler and the >> chute in the nosecone), maybe that increased nosecone-to-coupler gap >> is causing some vacuum. Maybe there’s a shock forming at the nosecone >> joint and that’s causing trouble. > > Hrm. Nothing in this seems obviously troublesome to me. > >> I’m still running 1.8.5 on it. It worked for me before, so I didn’t >> want to change anything. Just to make sure - 1.8.5 is fine to run, >> right? > > I don't see anything beyond 1.8.5 that you need. What I can do is run > your eeprom file through a ground simulation using the latest code and > see if it does the same thing. That's currently broken due to some other > changes, so it'll be a few days. > > -- > -keith _______________________________________________ altusmetrum mailing list -- altusmetrum@lists.gag.com To unsubscribe send an email to altusmetrum-le...@lists.gag.com
