Killing motors inadvertently in flight

[OurAngryBadger]

What are the chances this could happen accidentally? Now if I'm remembering my current stick setup accurately while I lay in bed with probable caronavirus; this means I would have to be flying backwards at a 45 degree angle at full speed while simultaneously descending and rotating the drone at full speed. But I guess in a certain video situation trying to get artistic flight effects, it could happen if one wasn't mindful of the stick positions?



And, the wording is a bit vague. Can you only stop the motors mid-flight if you used the CSC to start them? In other words, if you use auto takeoff, then there is no risk of stopping motors in flight?

 

[dirkclod]

If you was trying to get artistic affects I don’t think you would be going full speed so that happening would be highly unlikely.

 

[OurAngryBadger]

If you was trying to get artistic affects I don’t think you would be going full speed so that happening would be highly unlikely.

Hmm, maybe it tripod/cinematic mode though? I've definitely gone full stick in that mode when I needed something slower and steadier than P mode

 

[dirkclod]

Well I guess that’s possible but can’t recall it ever being posted about happening.

 

[FoxhallGH]

I don't know where to start looking, but I do recall a post around a year ago, where the conclusion was that it was highly likely that an inadvertent CSC had caused a 'fall-out-of-the-sky'.
The motor stop CSC is not reliant on the way you start the Mavic and take-off ... Otherwise, it would be a pretty useless 'emergency feature'.

 

[chuck1026]

I agree with the others that it's possible but I've never read of another case.

Hopefully you are well again soon and can get back to flying.

 

[Simmo]

Yes there was a case, but the flight characteristics/track looked like something out of a fast and furious movie!
Also, you would have to change a default setting in the app.

 

[Deleted member 114292]

But can you restart them? Never heard one way or another about that.

 

[Simmo]

Yes, free fall has been achieved too!!

Freefall of a Mavic Pro

I've seen two excellent videos of Mavics in a freefall from a high altitude, motors successfully restarted, drone landing unharmed. I've seen how the motors are stopped in mid air by pulling the sticks down and in. But, in searching thru the threads here I have not found answers to the...

mavicpilots.com

 

[jzilla80]

The motor stop CSC is not reliant on the way you start the Mavic and take-off

Also, you would have to change a default setting in the app.

I agree with both statements above.

On M2, there are two settings regarding CSC, under the controller section on Go4.
The default will only allow an emergency CSC, in flight, motor stop if the aircraft is at an extreme angle or the like (its explained next to the setting but I forget the wording). ex: if the drone has flipped, or is hanging in a tree branch.

The other setting is the one thatll get you in trouble, possibly, which allows a CSC motor stop at any time.
(Check out the videos under the google search "stopping mavic 2 motors mid air" I like the one by Chris Rollins where he stops then restarts midair, on purpose, and regains control, however, I'm sure he was every bit of 400ft in altitude.)

Im not sure how far back DJI started implementing firmware changes that added the CSC non-emergency setting.

 

[Deleted member 114292]

Yes, free fall has been achieved too!!

Freefall of a Mavic Pro

I've seen two excellent videos of Mavics in a freefall from a high altitude, motors successfully restarted, drone landing unharmed. I've seen how the motors are stopped in mid air by pulling the sticks down and in. But, in searching thru the threads here I have not found answers to the...

mavicpilots.com

Interesting video also interesting that it didn’t spin on its way down.

 

[DanMan32]

Jzilla has it correct.
I don't recommend using CSC to stop motors after landing, particularly on a Phantom (3) as it might flop over using the stick commands literally until interpreted as CSC.

 

[sar104]

Interesting video also interesting that it didn’t spin on its way down.

It won't spin fast with the motors off, but it will rotate and tumble slowly.

The Terminal Velocity of a Falling Mavic 2

First second it travels 16' but in that one second it has accelerated to 32 FPS. (Starts at 0 FPS, accelerates to 32FPS, and thus averages 16FPS for the first second.) It travels 48' in the second second, and accelerates from 32FPS to 64FPS, and so on.

mavicpilots.com

 

[ff22]

And I will add - get well fast!