That a horizontal wind blowing toward a tree would be transformed into a vertical wind is very dubious.
Not uncommon at all. If you are on the leeward side the wind could certainly cause a downdraft. If on the windward side you can expect an updraft. Simple aerodynamics.
A tree isn't an obstacle like a brick wall.
Maybe these studies will show it.
Just because other have not reported it doesn't mean it doesn't happen or others didn't know what to blame the effect on. Wind can be very unpredictable. If already at the limit of being able to hold position, very little extra wind can cause it to become uncontrolable.
How thousands of drones have behaved in the past is a pretty good indication of how drones behave.
Science shows this isn't true. To say otherwise is misleading at best. Pilots blame accidents on many things, if they don't understand how wind behaves around objects that may try to blame the drone fir just flying into the tree by itself. Even you didn't believe that wind blowing over a tree could cause a downdraft, how could other less experienced pilots even know that it could and that their accident was maybe caused by this or was a factor.
They are not related: you could have a large or small surface area for the same mass ( think of the same piece of paper screwed up into a tiny ball or opened out into a large sheet)
You are right, but .... mini2 and Air 2 S have the same proportions, that's what this thread is about
))Wherever you read that, it's incorrect.
Yes! Thanks for this! Actually I recently Had a very strange downdraft over a lake that almost wrecked my brand new Mavic 3. I had no idea why that happened and had flown over that same lake before with older drones (with both the first Mavic Pro and the spark) and had never experienced something like that. my friend who has a house by said lake and also has drones never experienced that. But it turns out the incident happened behind a large tree that’s right next to the lake (with large branches that extend over the lake), which now makes it at the very least a very plausible explanation for the downward push that almost caused me to total a Mavic 3 that was entirely devoid of DJI Care even. The traumatic event was one of the contributing aspects of my returning it to DJI (with outstanding customer service and full refund, DJI is still very much of a beloved brand for me. I’ve bought two of their camera gimbal hand devices and am likely getting the leaked mini 3 in April) and purchasing a skydio 2 in its place... (And missing the new skydio 2+ by a sneeze… well, one can’t be lucky all the time…)
That "explanation" is most unlikely to have caused your incident and without confirming data, is dubious.
I don’t understand the basis of your claims. Saying something is dubious doesn’t make it dubious, unless you explain what about it makes it dubious. Your overuse of quotation marks surely doesn’t make anything dubious. There’s nothing “mysterious“ about a downdraft, and the diagrams posted on this threat explain in detail how these drafts may form behind obstacles such as trees. The drone was moving erratically, and it had both what felt like a constant pull downwards and also sudden faster drops in height, similar to experiencing heavy turbulence on an airplane, when you feel the plane lose altitude for a moment. I had to actively fight it, otherwise it would have ended up in the lake. I didn’t share all the details of the conditions (although they didn’t seem relevant for your conclusions for some reason.) Anyways, it was the end of the afternoon and I got a notification saying that *all* of the Mavic 3’s anti-collision sensors were turned off. Besides that, it was over a body of water. And my basic understanding is that sensors that help maintain altitude might be less reliable over a body of water. It was also windy. And the explanation (without quotation marks) given by the diagrams posted here is the most plausible. I was there. And I’m telling you these diagrams make what I experienced clearer. Now if you have a better “explanation”, I’d be interested to know “why” you think this possibility is “dubious.”And why you believe altitude sensors in windy conditions over a body of water are so reliable. I will look at the logs. I’ve watched the video many times and remember it clearly. Maybe I’ll share the logs if they help clarify anything.
What makes it dubious is that:
Your basic understanding is not correct.
And if you could provide the recorded flight data, I'd be most interested to see what that says about your incident rather than accepting that someone's dubious guess fits what you want to believe.
I fly almost exclusively over the ocean, often in quite windy conditions.
Maybe?
In general, higher voltage drones have higher top speeds (but top speed for 3S and 4S Phantoms was identical)
