Just came back from flying field after a bad unexplained crash. it was a new flying wing airframe and started this morning by following the manual on roll/pitch and yaw tuning. First of we calibrated the Baro meter to report 0 meters on the ground and then we calibrated the airspeed sensor. What was strange was that we had to lower the airspeed ratio to 0.1 to get the airspeed sensor to report 0 ms a sec. ( my main opinion for the crash)
We proceeded with the first test fly by wire A to see if the roll and pitch was working correctly. we saw that the reaction time was very slow and I proceeded to try change the rate for this. Before i could change anything loiter seemed to pick its own direction and headed full speed( 144kmp) in that direction. when we switched to RTL the plane made two loops in the air and crashed. can anyone look at the Tlogs and confirm reason for crash? the red block below shows the uncontrolled flight path before crash.