KlooGee
Second Officer
Flight distance : 16783757 ft
United States
Offline
|
Firstly, very sorry to see and hear you lost your drone in an unfortunate incident.
Based on the thread title, it sounds like there is a backstory to this topic that I'm unaware of, so I'm not sure if I'm stepping into a hornets nest here by responding or not. Just understand I'm trying to reply with a 3rd party perspective and trying to be as honest here as I can be.
I would very much be interested to see your logs for this flight. Please upload it to the following site and then reply here and paste in the resulting URL. https://www.phantomhelp.com/logviewer/upload/
Just based on the video and without seeing the log, I have to say that I think my diagnosis of the flight would be very similar to what you got from DJI.
DJI drones essentially have 2 mechanisms for understanding where they are in relation to the world around them. Firstly, the primary mechanism is GPS and secondly, when GPS is unavailable, it tries to use its downward facing sensors to judge movement.
In your case, it looks like flying underneath the bridge cause the GPS strength to fall below a certain threshold that allowed the drone to reliably count on it for positioning. In that case, since you were not very high, it would try to use the downward facing Visual Position System (VPS). However, due to the fact that you were over water, the VPS system very likely was unable to sense any textures below it and allow for it to be able to be reliably counted on for its positioning.
So because GPS and VPS both were unreliable in that moment, it was essentially in ATTI mode and had no way of controlling its positioning in the horizontal plane.
One of the things you mention was in regards to the object avoidance. You mention that it made a beep just before it hit the wall. I could be wrong, but to me, that sounded more like a button press on the RC than it did like an object avoidance sensor. However, that issue really doesn't matter anyways. This is because when the aircraft is flying without its positioning systems (GPS & VPS), it cannot position itself or auto-brake even if an object would be detected.
I'm sure the wind wasn't blowing very hard, but it was blowing hard enough to be causing sounds on the mic. When the drones positioning systems are working, an easy breeze is no problem at all. But when the positioning systems are compromized, you are floating freely with the wind. I don't know how hard the wind was blowing, but if you think about it, a tiny 4mph wind is still almost 6ft/s. I would guess to make the noise in the mic, it was probably blowing harder than 4mph.
I'm not quite sure what you were expecting from DJI in this particular case, but I personally think their response was quite reasonable. I respect your opinion to feel otherwise, but if I was running a business for myself, I would have made the same decision they did.
For the other stuff in the email ("dear customer" & discount offer not in separate email), again I respect your opinion to feel otherwise, but I think you are just looking for something to be upset about. Personally, I don't see the difference with offering the discount in the same email. What's the difference if its in that email or a separate email? It still the same offer regardless. And the "Dear Customer" issue... I personally would never do that when interacting with my customers, but I probably wouldn't even think twice about it if I received it from some random support person on the other side of the world.
I hope you get another drone soon and are back up and flying quickly with many safe and fun flights ahead!
Hopefully I didn't step on a hornets nest here.
Cheers!
David
|
|