Vortex ring state (VRS)
- Thread starter Buckaye
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According to this VRS expert "labroides" on the DJI site he says its 'IMPOSSIBLE' for the P3 to go into VRS because of the way DJI has limited its decent rate..BS, I call BIG BS. IT can go into VRS, I know because its happened to me! And speed of decent is not the only way it can go into this state. I for one bring the P3 down nice and easy now, no reason to speed!
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What I have noticed is that when I have experienced VRS, twice, it has been vertical decent slow with no horizontal speed. When this happened, I was near a hollow area surround by trees within 10 feet away from the P2. I was guessing that the wall of trees, or whatever, funnels the returning updraft(ground effect) back into the top of the props causing zero lift. Just what I have experienced anyway.
Since then, I always have some horizontal speed when descending and stay clear of the "Wall" effect.
Since then, I always have some horizontal speed when descending and stay clear of the "Wall" effect.
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Meta4
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I'd be interested to hear details of your incident because I haven't seen any reports of VRS affecting the P3 so far.
My own testing has not found any sign of VRS despite vertical descent from very high in calm air.
Given the way DJI kept the P2 to 2 m/s, I think it's interesting that they increased descent speed for the P3.
They obviously are not as concerned.
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Lol. My wife heard the beep from the other room and asked if could check the smoke detector.Change your smoke detector battery
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Unless I'm limited in space and required to "vtol" I usually try to take off and approach like a fixed wing. Makes for more fun of a flight as well.
I think you might have a very good point there - the air is being pushed out slightly sideways rather than straight down
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Well the details are as follows: Up about 150-200 feet, all is good. Slight breeze maybe 10 knots and for FUN I decide to point my camera straight down and do a fast as possible decent...at about 75-100 feet off the deck (flying at my local RC field), she starts the 'death wobble' which lasts about 2-3 seconds. I let off the left stick immediatly and she corrected and stabilized.
Meta4
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Interesting but it's not much of a death wobble if you got out of it so easily.
Also if there was a 10 kt breeze, even with a vertical descent you're not coming down in turbulent downdraft so VRS is quite unlikely.
My assessment (from limited details) is either it wasn't VRS or your P3 easily resisted VRS.
Also if there was a 10 kt breeze, even with a vertical descent you're not coming down in turbulent downdraft so VRS is quite unlikely.
My assessment (from limited details) is either it wasn't VRS or your P3 easily resisted VRS.
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