Disintegrating Propellers

[Bermuda Sunset]

Just 5 minutes ago I had a truly horrible experience, and now feel somewhat lucky. While manoeuvring back to land on my terrace there was an almighty "crack, crack" sound and the AC tumbled on to the terrace, luckily not off it, some 4 metres ! Thinking that someone ( possibly daughter ) had put a near invisible bit of wire up or something I checked around, NOTHING THERE, so didn't hit anything. It appears the end of one prop zipped off, maybe hitting another prop, resulting in two ends lost off two props and down she went. Has anyone had a similar experience ? Are some props faulty ? And yes these are the original props supplied with the Drone by DJI, and just over 2 months old

 

[With The Birds]

Is it possible the prop damage resulted from hitting the deck? The propulsion system will let the AC fly happily with an inch cut off the end if all props. Something else is going on here.

 

[Techcop50]

Maybe a large bug or maybe a hummingbird? No way it self-destructed, IMHO.

 

[Capo]

A small chip or crack from a previous flight could cause this. Always best to inspect blades for even the smallest chips prior to flight. There is a lot of stress on these blades. Not saying that was the case here, but it certainly is possible.

 

[AyeYo]

How sure are you that that happened in the air and not after impact? The craft would fly just fine (thought full of vibration) with those props pictured.

 

[smiller]

That clearly looks like impact damage to me. Also note the small chunk missing from the left end of the bottom prop, and the markings on the right end of the top one.

 

[AyeYo]

Were all props still attached when you picked the drone up from the crash?

 

[msinger]

@Bermuda Sunset, can we take a look at your DAT flight log? If so, please upload it to dropbox.com and post a link back here. If needed, you can find instructions for locating your DAT flight log here.

 

[Bermuda Sunset]

Thank you all for your invaluable input and in answer some questions, 1) 1 prop had detached, but whether that was before or after its tumble I don't know. 2) what damage there was to the props may have been a result of hitting the deck and the noise was something else.
@msinger I will try to do as you ask , one thing I have found out is that there is no video log or flight log, that is looking at what you can see on the app. I will use dji *** 2 to get the dat file, thanks guys

 

[Bermuda Sunset]

@Bermuda Sunset, can we take a look at your DAT flight log? If so, please upload it to dropbox.com and post a link back here. If needed, you can find instructions for locating your DAT flight log here.

Will the DAT flight log be there when I was flying with Litchi mate ?

 

[msinger]

Yes.

 

[Bermuda Sunset]

Hi, hope this can reveal something !!

 

[DanMan32]

That dat file doesn't seem big enough to be the correct one. Did you turn on the AC anytime after the crash for a short time? If so you probably picked the DAT file for that session rather than the flight that crashed.
Based on that file size you're talking about a 16 second session from battery power on to battery power off.

 

[Bermuda Sunset]

That dat file doesn't seem big enough to be the correct one. Did you turn on the AC anytime after the crash for a short time? If so you probably picked the DAT file for that session rather than the flight that crashed.
Based on that file size you're talking about a 16 second session from battery power on to battery power off.

Hi, yes I did, and again for the DAT file so this must be the correct one, 88Mb

Argggh won't upload says file is too Big, any ideas guys ?

Guess I will have to keep on guessing LOL

 

[With The Birds]

You will need to upload the file to a third party hosting service and paste the link in the thread.

Following your update that one prop was off the AC you can be more than reasonably confident it through the prop off in flight.

 

[Snowwolf]

Stick it on dropbox and then send the link

 

[Bermuda Sunset]

You will need to upload the file to a third party hosting service and paste the link in the thread.

Following your update that one prop was off the AC you can be more than reasonably confident it through the prop off in flight.

I think you are exactly right, the whole sudden flipping upside down and sideways would be explained by that. As I said in the beginning " feeling somewhat lucky" as just done a pretty long flight !

 

[Bermuda Sunset]

Stick it on dropbox and then send the link

OK 2nd time lucky, the link to dropbox Dropbox - FLY122 (1).DAT
thanks for your patience

 

[msinger]

That's not the correct DAT flight either.