Add to ORKG"The second and third (42 and 43) flights were used to test the waypoint tracker controller. We had disabled the altitude and velocity hold controllers to simplify the debugging task. We did not have enough time to debug the controller pre-flight, and this was James' last opportunity to fly. Initial reaction to the performance was poor. More analysis required, adjustment, and re-test. Flight 42 and 43 also had some manual elevator, aileron, and rudder doublet maneuvers that could be used for model validation. Software used was branches/WayPointTrack rev 830. Flight 43 was dedicated to a revised heading doublet, with smaller amplitude and shorter pulses. Erratic response. Manual elevator, aileron, and rudder doublets. Thor Flight 43 Rx data:...