We have build dihedral quadcopter with T motor MN8014 motor with G30*10.5 inch propeller. We have done windspeed estimation and Baro compensation our value of EK3_DRAG_MCOEF = 0.4 we have calculated it by averaging values we get from last 2 samples . Our EK3_DRAG_BCOEF_X is 516.85 and EK3_DAG_BCOEF_Y = 544 .
we have followed the sequence
-imu temp calibration
-initial tune parameters and test manual flight
-changin the psc_accz_p&i according to motor thrust hover
configuring the notch filter and magfield calibration
-autotune (0.075 aggression)flight
-evaluate the tune and then wind speed estimation flight
-autotune(0.1 aggression) again to fine tune he drone
now there are two main problem -wobbling on descent -random behavior
random behavior in the sense that sometimes it wobble in low wind condition and sometime it keep highly stable in high wind condition.
first of all I tried with the default value for this from ardupilot that 0.75 for 30 inch prop
then from previous thread people suggested this value i.e 0.2 for T-motor flame esc
The parameter depends on the ESC, the motor and the propeller. You should search the internet to see if you can get test data from the particular combination that you are using
