Charles_McG
Ciderwright
I have worried the same thing about the PID.
That is a really interesting alternative, not sure how I would sim the brakes though. Also I wonder if the sim could produce realistic enough results to be accurate? An advantage of the PID is it is based completely off of real time variables, and the quadratic drag equation (where drag is actually measured empirically in real-time).
Fly more than once, activating different drag amounts. Build a model. Do it empirically, but not real time. Dig into openrocket add-ins and build one to do a variable drag profile, a bit like the way someone built an add-in to do winds by altitude.
And before someone notices and asks, the V discontinuity at ~1sec is a booster seperation event. The sustainer didn't light (open circuit at timer - I need to look for that loose wire). I have no idea what the burp near 2 seconds is.