<#part sign=pgpmime> On Sun, 1 Apr 2012 23:49:21 -0600, "Eric Weder" <[email protected]> wrote:
> If it ain't broke don't "fix" it by wasting code on superstitions. If the > Telemini code uses the same algorithms as Telemetrum, I'd say you have it > covered. Unfortunately, it's not the same -- TeleMetrum has an accelerometer, which the Kalman filter uses to override the barometric data during mach transitions. On TeleMini, we instead compare the barometric data with the physics of a ballistic flight. The result is the same; the misleading barometric data does not cause an incorrect apogee detection. > I flew my Telemetrum last July 1 to 375 m/s (Mach 1.1), with no problems. It > was backing up my Raven2, and did a fine job. What a stress-reliever it was > to know that deployment was successful while the rocket was 5 km overhead, > and that it would be easy to find it again even if we didn't see it come > down. Don't know if this list allows attachments, I've included a PDF of the > flight results and my .eeprom file. (the .eeprom file didn't get attached successfully) Note that the plotted altitude (which is drawn solely from the barometer data) shows a clear mach transition effect at about 800m. If you can send along the .eeprom file, I can use this to further verify that the TeleMini algorithms would successfully inhibit apogee detect here. -keith _______________________________________________ altusmetrum mailing list [email protected] http://lists.gag.com/mailman/listinfo/altusmetrum
