Hi guys, my plane does not hover (or fly in Qstabilize)! After takeoff, the nose goes down and it goes on flying at an angle of 25 degree at full throllte (automatically). Because it got out of view very quickly, I decided to set throttle to 0 and crash the plane instead of going on flying in that critical condition.
I use the same Skywalker X5 as mrjadkowski does. It is hard for me to believe that he flies the Skywalker with original CoG an original flap size although I saw his videos. My motors have more power than his motors so I should have better flap control. He wrote that he moved the CoG 2cm back but I think it would not make that difference I need.
So what would be the best way to solve my problem?
- Enlarging flaps? I do not have any material for that at the moment. 3mm Depron would be nice I think.
- Moving CoG backwards risking a non-stable flight in horizontal mode?
- Building a test frame for testing pitch behaviour? At which position should I mount the plane? At the CoG? directly behind the motors? Next to the the propellers?
What about the air speed sensor? Shoud I better remove it?
- Adding negative down thrust (wich would mean up thrust). It is hard to find the airfoild center line at wings.
- Other suggestions?
During take off I got the osd message “EKF Yaw Reset 28,53”. What does that mean?
AUW is 1.4kg/3lbs. Thrust 1,4kg per motor. Pitch angle at take-off was 88 degree. mrjadkowski wrote that he could take off successfully at 80 degree. Too bad that mrjadkowski wasn’t online for the last months.
Parameter I change in the code:
Parameters I changed before when flying manually with one pusher motor (normal wing)
TRIM_ARSPD_CM 1400 cm/s
LIM_PITCH_MAX 3000 cdeg
FBWB_CLIMB_RATE 5 m/s
I just read that it is better to use EKF3. Could that cause the crash? I try later: