Can someone take a look at my Air Data?

[jsposito]

I had uploaded my flight log last week and the consensus was I believe "not pilot error". Now my drone is at DJI and has yet to be assessed. and I have to wonder if indeed it will be replaced ( non pilot eroor)

With these new details can someone confirm what the heck happened here. Their a couple of assumptions but the bulk of the errors came after the drone hit the ground, Btw, the tallest tree in this area is no way near 110 feet.

Thanks all

John

Airdata UAV - Flight Data Analysis for Drones

 

[ukracer]

The log from the drone would show a lot more info.

 

[sar104]

I had uploaded my flight log last week and the consensus was I believe "not pilot error". Now my drone is at DJI and has yet to be assessed. and I have to wonder if indeed it will be replaced ( non pilot eroor)

With these new details can someone confirm what the heck happened here. Their a couple of assumptions but the bulk of the errors came after the drone hit the ground, Btw, the tallest tree in this area is no way near 110 feet.

Thanks all

John

Airdata UAV - Flight Data Analysis for Drones

That's only current and voltage data - is that all you intended to publish?

 

[jsposito]

oh, ok. I thought Air Data gave more..my mistake

Phantom Log Viewer - PhantomHelp.com

 

[msinger]

Here's your original thread:
Would this be a repair or replace?

Here's your full TXT flight log:
Phantom Log Viewer - PhantomHelp.com

 

[jsposito]

excellent thank you!!!

 

[jsposito]

That's only current and voltage data - is that all you intended to publish?

yeah my mistake, PHelp posted my two links for me.

 

[jsposito]

The log from the drone would show a lot more info.

done, thanks...no i thought you would be able to hit all the tabs. Sorry, don't think you want me to post like 10 links to the details but I will post this if it will help from air data Airdata UAV - Flight Data Analysis for Drones

 

[jsposito]

That's only current and voltage data - is that all you intended to publish?

Phantom Log Viewer - PhantomHelp.com

 

[msinger]

In your original thread, @Yarome was the only person to conclude that your crash will be covered under warranty. He did not explain why though.

From looking at your flight log, I can see the downward sensors were detecting the ground (tops of the trees) shortly before your crash. Your Phantom most likely hit a branch on one of those trees. DJI will of course have the final say, but it looks like pilot error to me.

 

[sar104]

In your original thread, @Yarome was the only person to conclude that your crash will be covered under warranty. He did not explain why though.

From looking at your flight log, I can see the downward sensors were detecting the ground (tops of the trees) shortly before your crash. Your Phantom most likely hit a branch on one of those trees. DJI will of course have the final say, but it looks like pilot error to me.

View attachment 81813

I agree - the aircraft appears to have flown into a tree at around 2' 50", travelling at around 45 mph in level flight, with sport mode engaged so no obstacle avoidance. That doesn't sound like equipment failure, unless there are other factors not reflected in the logs.

At 2' 49.9" the IMU pitch roll and yaw measurements indicate impact.

 

[jsposito]

oh boy ugh, not good. I have flown that route before which is why I thought it had to be a cell pretty major cell fail or deviation. Just don't get it, trees here aren't that all. But I must be wrong but do appreciate the observations from both of you and thanks to @Yarome for his input as well.

I let you know what DJI says.

HS

 

[sar104]

oh boy ugh, not good. I have flown that route before which is why I thought it had to be a cell pretty major cell fail or deviation. Just don't get it, trees here aren't that all. But I must be wrong but do appreciate the observations from both of you and thanks to @Yarome for his input as well.

I let you know what DJI says.

HS

Here's the profile for IMU data and speed. First contact at 167.8 s, which appears just to have flipped it slightly, and then a bigger impact at 170.3 that took it down.

 

[jsposito]

Here's the profile for IMU data and speed. First contact at 167.8 s, which appears just to have flipped it slightly, and then a bigger impact at 170.3 that took it down.

View attachment 81814

Looks like a heart monitor but I do get some of it. A crash just over 2.5 minutes. Crazy. I thought I had insurance on it too, only to find out that my insurance guy never provided his company last month with the required info That was painful. Thx

 

[sar104]

Looks like a heart monitor but I do get some of it. A crash just over 2.5 minutes. Crazy. I thought I had insurance on it too, only to find out that my insurance guy never provided his company last month with the required info That was painful. Thx

Red, green and blue are pitch yaw and roll (left axis), which are steady until the first contact. They recover stability (at new values) and the speed (black, right axis) doesn't change much until the impact a couple of seconds later, at which point everything goes south.

 

[jsposito]

Red, green and blue are pitch yaw and roll (left axis), which are steady until the first contact. They recover stability (at new values) and the speed (black, right axis) doesn't change much until the impact a couple of seconds later, at which point everything goes south.

Thanks, can you tell me why the speed increased (spiked) after first contact? or am I reading it wrong.

 

[Crack The Sky]

I had uploaded my flight log last week and the consensus was I believe "not pilot error". Now my drone is at DJI and has yet to be assessed. and I have to wonder if indeed it will be replaced ( non pilot eroor)

With these new details can someone confirm what the heck happened here. Their a couple of assumptions but the bulk of the errors came after the drone hit the ground, Btw, the tallest tree in this area is no way near 110 feet.

Thanks all

John

Airdata UAV - Flight Data Analysis for Drones

No wonder you crashed. AIrData says you were doing 123.75 MPH. You burned the wings off.........

 

[jsposito]

I know lol! That's possible in sport mode? with 10mph winds?

 

[Crack The Sky]

I know lol! That's possible in sport mode? with 10mph winds?

You got a winner there. Hope they send you back the same one. She loves to run!

 

[sar104]

Thanks, can you tell me why the speed increased (spiked) after first contact? or am I reading it wrong.

I'm not seeing the spike - it seems to be holding at around 44 mph, then drops slightly.