Hi,
Today I made a range check with my frsky Tx/Rx combination. So the copter stood on the ground in stab mode and armed while I walked away to test if the copter is still responding to the radio signals. I played with the throttle, not strong enough to let the copter fly, but just to let the props spin. At some 60 meters (simulated range of 1.8km) the copter lost the Tx signal, the Rx activated failsafe which let the APM go to RTL - everything as planned. But then the copter suddenly started it's motors and jumped half a meter into the air. Then the motors stopped and it fell down. No damage at the copter, but a little bit perplexity in my case.
Why did it this jump in RTL/Failsafe mode although it stood on the ground? Some baro issue? The log file is attached, the failsafe happens at line 4505.
Perhaps this is a hint: Yesterday I let the copter land via RTL: It went down fine and successfully but when it touched the ground it went up in the air again, stopped at 1.5 meters and there it stayed - till I changed to stab mode to land by myself.
All the best,
Markus
You need to be a member of diydrones to add comments!
Replies