detectors It will not fall out of the sky.I'm curious: If it says landing when it's high up, does that mean it will go down 1 meter and crash? Or does it have some detection based on motor output force or something else, not only sensors?
detectors It will not fall out of the sky.I'm curious: If it says landing when it's high up, does that mean it will go down 1 meter and crash? Or does it have some detection based on motor output force or something else, not only sensors?
I suspect it is something other than "motor output force", you might like to read post #6.detection based on motor output force
My Mini will always descend when commanded to do so until it gets within about half a meter off the ground. At that point the infrared downward sensors prevent it from going any lower. If, while flying slowly low above the ground, it encounters an obstacle that comes closer than half a meter under the drone, the Mini will automatically rise up to avoid that obstacle.[...] if you take the drone up above the fog ,the downwards sensors can be fooled and think that the fog is actually the ground and then the drone will decide not to descend
It will NOT cut power. Whenever "Landing" is triggered, the drone will continue to descend from whatever its current height until it reaches solid ground. Power is cut only after it has registered a landing, in that it senses no further decrease in altitude in response to the descent power setting.the aircraft is seeing the FOG as a solid surface and it very well could (as many others have found out the hard way) think it has landed and CUT POWER! Not a good idea.
No. When it says landing, it will continue to automatically descend from whatever initial height until landed.If it says landing when it's high up, does that mean it will go down 1 meter and crash?
That was a real eye-opener. I tested and confirmed that with my Mini.Applying full [down] throttle for a descent isn't needed in order to start the landing ... a couple preconditions needs to be met first though.
1. The VPS height should be 0,5m or lower
2. The throttle should in total be applied for descent longer than 3sec.
3. The throttle should sometime during the 3sec be positioned over [under] a certain threshold which seems to be in the ballpark of a throttle value of -8300 to -8500.
My Mini will always descend when commanded to do so until it gets within about half a meter off the ground. At that point the infrared downward sensors prevent it from going any lower. If, while flying slowly low above the ground, it encounters an obstacle that comes closer than half a meter under the drone, the Mini will automatically rise up to avoid that obstacle.
So yes, when descending into the top of a cloud or fog, the sensor possibly might detect that as a solid surface and refuse to descend any lower. Holding the throttle down will trigger "Landing" and the drone will descend through the cloud or fog layer.
It will NOT cut power. Whenever "Landing" is triggered, the drone will continue to descend from whatever its current height until it reaches solid ground. Power is cut only after it has registered a landing, in that it senses no further decrease in altitude in response to the descent power setting.
No. When it says landing, it will continue to automatically descend from whatever initial height until landed.
Auto-landing can be interrupted at any point by giving it full up throttle, or by pressing Cancel in the app, or pressing the Cancel button on the controller. [Obviously, critical low-battery auto-landing is different, eh.]
I recently experienced a similar incident while flying close to a waterfall. The downward sensor on my Mini detected the spray coming off the waterfall and misinterpreted that condition as being less than 0.5m off the ground. Because I was holding the throttle down to descend at the time, that triggered auto-landing and the Mini commenced landing into the river. Eek!
Fortunately it happened at sufficient initial height that I had enough time to recognize what was happening and cancelled the landing. What really confused me was that I definitely did not have the throttle fully depressed at the time. I thought auto-landing was only ever triggered with the throttle held fully down. Not true.
There's a lot more info about that incident in this thread with videos and data plots,
LOSS of CONTROL OVER WATER **EXPLAINED**
But in particular, read this single post by @slup,
mavicpilots.com/threads/loss-of-control-over-water-explained.117029/page-3#post-1322010
He explains:
That was a real eye-opener. I tested and confirmed that with my Mini.
So, as it relates to this thread, if you are descending through heavy fog which the VPS sensors misinterpret as being within 0.5m of the ground, and you've being holding the throttle down for more than 3 seconds, and at some point the throttle is depressed to more than 85% down, THAT will trigger auto-landing!
If you want it to continue descending to auto-land where it's at, then no problem. Just let it do its thing and it will continue to descend until touching down on a solid surface. But if you really do not want it to land all by itself, press cancel immediately to stop the descent.
I think the key concept is that while you own your property, in the US you do not own the airspace over your property. The rules for the airspace are the rules for the airspace, regardless of who owns the property below.Definitely no VLOS, however I'm very familiar with the property and knew there were no trees or wires or towers, and I was over land with no people or obstacles under it. I am kinda going on the maybe unsafe assumption, that if you're flying over your own property in clear airspace and you know there are no people or obstacles, and you're within a few hundred feet, it's okay to relax normal VLOS guidelines. I would love to hear from anyone if you think this could be unsafe as I'm always open to learning.
Would you have links to any of the threads?It's been noted several times (on this forum and others) where DJI aircraft have ind
I'll admit I may be wrong. That happens far too embarrassingly often, when I'm convinced I'm right but someone with factual examples proves me wrong. For example, I was totally convinced that auto-landing would only be triggered when the throttle is held full down, when in fact that's not true at all.It's been noted several times (on this forum and others) where DJI aircraft have indeed "registered" the aircraft has landed and powerdown in the scenario mentioned above.
You can select "landing" from any height you please, and the drone will continue slowly descending until touching down on something solid.My M2Z states “landing” when in RTH mode as soon as it starts descending from my RTH altitude(90 meters) and is directly over the takeoff spot. Am I misunderstanding something here?
Thanks for that info. I was right up at about tree top level - maybe slightly higher but not by much. Do I not control the airspace from the tops of my own trees down?I think the key concept is that while you own your property, in the US you do not own the airspace over your property. The rules for the airspace are the rules for the airspace, regardless of who owns the property below.
My understanding is no. You control the airspace within your house, but as soon as you go outside, the FAA controls it all. I'm not a lawyer, but I've heard there is some ambiguity in case law around this.Thanks for that info. I was right up at about tree top level - maybe slightly higher but not by much. Do I not control the airspace from the tops of my own trees down?
I had virtually the same experience. Morning fog, local wetlands, great pix.I know better now, but I've got questions.
It was a foggy morning when I thought I'd shoot a 320-foot dronie off the back deck on a foggy morning. No problems filming the actual dronie, and it even was flying back on its own just fine. But when it got close to the starting point, I took over manual control and tried to land. That's when I discovered the Air 2 saying, "Landing" when it was 30 feet up. It didn't look like that much fog, and it was only 30 feet up, but it couldn't tell where the ground was.
Having never encountered this situation before, my immediate thought was, "it's going to think it's on the ground at 30 feet up and then cut power and crash." So I cancelled the landing, tried again, and the same thing, and I cancelled again. Eventually I figured out that if I just kept it trying to land, it wouldn't cut power, so I moved to a safe place and landed from 30 feet up. So I've got questions now:
- Is there a way to get the Air 2 to descend normally when the bottom sensors get fooled by fog?
- Can I switch the bottom sensors off mid-flight, then maybe switch them on again?
- Will a return to home in the fog work?
- Is there any way to fly safely in fog?
when I went to RTH the drone repositioned correctly over the landing spot, but it would not come down. Battery was at 10%.
Its kind of a cool shot so I suggest not flying all the way into the fog. You get your shot and you get your drone back, hassle freeI know better now, but I've got questions.
It was a foggy morning when I thought I'd shoot a 320-foot dronie off the back deck on a foggy morning. No problems filming the actual dronie, and it even was flying back on its own just fine. But when it got close to the starting point, I took over manual control and tried to land. That's when I discovered the Air 2 saying, "Landing" when it was 30 feet up. It didn't
Thanks for that info. I was right up at about tree top level - maybe slightly higher but not by much. Do I not control the airspace from the tops of my own trees down?
We use essential cookies to make this site work, and optional cookies to enhance your experience.