Watching that video is like watching a nightmare happen. I cannot imagine what you were feeling as that thing was upside down and coming down quick. The way it was jerking almost looks like it was trying to flip back over.
Vortex Ring StateI am not sure what happened to you, but your terrible experience reminded me an advise that my flight instructor always reminded us (trainees wanting to be drone pilots) when we were coming home quickly with low batteries. That flight instructor is also Spanish Air Force heavy helicopter pilot, and he was repeating us not to go down vertically for a long period with copters because sometimes, the propellers could stall if they were inmersed in the vertical airflow produced by the falling drone. I wonder if during your drone's trip down, a couple of propellers reduced speed to compensate some attitude, and then stalled causing the drone to flip.
I have recently started flights with my P4, received by the end of April. Since then I had always the "poor video signal" announcement and the camera "squeak" when initializing... Since last update of new firmware it seems everything is OK now.
No bird strike.. I had clear sight on it as it was coming down and flipped over..Bird Strike?
The prop didn't came off as all props were broken and a half was still attached to the motors. It also didn't hit anything as there was nothing around it. It crashed down in the middle of the open river..From the vid and experience your propeller either fell off or you hit something that damaged one of the propellers.
As i see it it was coming down with the return to home function and then it flipped over and crashed. I didnt had any control over the situation after waypoint one besides pressing the RTH button which started working after a couple times pressing. The fact that all waypoints were set at 10m altitude and the drone started to rise up towards 400m after waypoint one is when the nightmare started. The flipping over just made it complete.I am not sure what happened to you, but your terrible experience reminded me an advise that my flight instructor always reminded us (trainees wanting to be drone pilots) when we were coming home quickly with low batteries. That flight instructor is also Spanish Air Force heavy helicopter pilot, and he was repeating us not to go down vertically for a long period with copters because sometimes, the propellers could stall if they were inmersed in the vertical airflow produced by the falling drone. I wonder if during your drone's trip down, a couple of propellers reduced speed to compensate some attitude, and then stalled causing the drone to flip.
I have recently started flights with my P4, received by the end of April. Since then I had always the "poor video signal" announcement and the camera "squeak" when initializing... Since last update of new firmware it seems everything is OK now.
From the vid and experience your propeller either fell off or you hit something that damaged one of the propellers.
What about accidentally activating the motor kill mode with the sticks? sorry if that's not the right terminology.
This is how my missions work too. I get WARNING DISCONNECTED but the missions complete OKI've used Litchi twice, I sent White Betty on a 14 minute mission, three miles away, in a densely populated residence. I had to wait for her to come back, as I lost signal with her 30 seconds after she took off. She returned, and the video I later watched showed that she followed the course I set out. All of this is to say that I haven't had an issue with the app.
Sorry to hear that.
I use Litchi all the time. I've never had a problem with it (P3 not 4) but I have learned a lot.
#1 - Always, always, always fly with your finger on the F,A,P switch. If anything unusual happens don't mess with the app, just flick that switch to P. At that point the App is no longer in control and it will stop and hover until you fly it home.
#2 - If you're not careful is it easy to accidentally adjust the altitude of waypoints, particularly on small screens. It's not out of the realm of possibility that you were looking things over, brushed the screen over where the alt slider is and now that waypoint is super high or low.
#3 - Always, always, always fly with your finger on the F,A,P switch. If anything unusual happens don't mess with the app, just flick that switch to P.
#4 - Save all of your missions. It is very useful for debugging later. 99% of the time I had problems the mistake was mine. It is very powerful but can be finicky.
#5 - Always, always, always fly with your finger on the F,A,P switch. If anything unusual happens don't mess with the app, just flick that switch to P. I may have mentioned that before.
Great advice. I follow these rules too
Sorry to hear that.
I use Litchi all the time. I've never had a problem with it (P3 not 4) but I have learned a lot.
#1 - Always, always, always fly with your finger on the F,A,P switch. If anything unusual happens don't mess with the app, just flick that switch to P. At that point the App is no longer in control and it will stop and hover until you fly it home.
#2 - If you're not careful is it easy to accidentally adjust the altitude of waypoints, particularly on small screens. It's not out of the realm of possibility that you were looking things over, brushed the screen over where the alt slider is and now that waypoint is super high or low.
#3 - Always, always, always fly with your finger on the F,A,P switch. If anything unusual happens don't mess with the app, just flick that switch to P.
#4 - Save all of your missions. It is very useful for debugging later. 99% of the time I had problems the mistake was mine. It is very powerful but can be finicky.
#5 - Always, always, always fly with your finger on the F,A,P switch. If anything unusual happens don't mess with the app, just flick that switch to P. I may have mentioned that before.
Hope things are up and running again soon.