low voltage auto land?
- Thread starter Baldfield
- Start date
Looking at the telemetry, you can watch it switch to "land". Now, it did yaw 1/4 left toward the open space but I am not trusting that as pre-programmed. It probably accepted that one command from me which was instinctive but after that, nothing. Landed probably in 4-5 seconds from take-over.
Yes, agree. It is much cleaner, I dislike the characteristics of the bird on a direct descent. Like an unruly child that does not want to come inside! However, sometimes it is necessary. If airspace permits, I practice a pattern. Great suggestion.
PatR
Premium Pilot
If flying on low battery voltage, avoid using the Home/Land switch. If the set RTH height is higher than the aircraft’s current altitude the aircraft is auto commanded to climb to the RTH height. If the battery is already low you don’t want to be imposing a higher current demand and waste critical voltage doing that.
Example:
I usually fly at 100’ or lower but my RTH height is set at 200’ to assure obstruction clearance on a direct line return path.
If I was flying at 50’ a distance 800’ away from me and switched into RTH the aircraft would immediately climb straight up an additional 150’ before starting a return home. All that altitude consumed critical battery power and extends the time needed to descend after the aircraft returned home.
It’s very possible to fly a battery to a low voltage and be too high for the remaining voltage and current availability to be sufficient to land the aircraft. The voltage can be depleted to a level where the system will no longer function reliably, or at all, and enter an unrestricted, uncontrolled descent to impact.
Another situation is possible when flying in Smart mode. If the aircraft is high enough it can be flown inside a lateral distance less than the safe circle distance. If flying over the top of the Safe Circle, commanding RTH/Land will initiate a descent but upon entering the Safe Circle “bubble” the aircraft will maneuver to escape the Safe Circle, ignoring your manual command inputs.
Example:
I usually fly at 100’ or lower but my RTH height is set at 200’ to assure obstruction clearance on a direct line return path.
If I was flying at 50’ a distance 800’ away from me and switched into RTH the aircraft would immediately climb straight up an additional 150’ before starting a return home. All that altitude consumed critical battery power and extends the time needed to descend after the aircraft returned home.
It’s very possible to fly a battery to a low voltage and be too high for the remaining voltage and current availability to be sufficient to land the aircraft. The voltage can be depleted to a level where the system will no longer function reliably, or at all, and enter an unrestricted, uncontrolled descent to impact.
Another situation is possible when flying in Smart mode. If the aircraft is high enough it can be flown inside a lateral distance less than the safe circle distance. If flying over the top of the Safe Circle, commanding RTH/Land will initiate a descent but upon entering the Safe Circle “bubble” the aircraft will maneuver to escape the Safe Circle, ignoring your manual command inputs.
This is one of the reasons to not get into the habit of using RTH, simply because it is available. Also if you have no obstructions in the way, make your geometry teacher beam with pride by using the hypotenuse and creating a glide path.
If you have to bias anything (again under circumstances of no obstruction), bring the altitude down first. If power craps out while you are 15 feet in altitude and 75 feet distant, what will be the resulting damage... as compared to being 15 feet distant, at an altitude of 75 feet.
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Hello,
There are two battery warnings and a warning that the emergency landing is initiated.
From a voltage of 12.9V, the emergency landing is automatically initiated.
See video:
The Realsense module has an 8GB memory, which can store the last 5 - 5,5min of the detected area, to disperse if needed.
I would recommend to always land the Copter right after the first battery warning. That should give enough leeway to control a minor incident.
greeting
Fan Tho Mass
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german translation
Hallo,
es gibt zwei Akkuwarnungen und eine Warnung, dass die Notlandung eingeleitet wird.
Ab einer Spannung von 12,9V wird automatisch die Notlandung eingeleitet.
Siehe Video:
Das Realsense-Modul hat einen 8GB Speicher, der kann die letzt 5 - 5,5min des erfassten Gebietes speichern, um bei bedarf auszuweichen.
Ich möchte empfehlen, den Copter immer direkt nach der ersten Akkuwarnung zu landen. Das sollte genügend Spielraum geben, um ein kleinere Zwischenfälle zu kontrollieren.
Gruß
Fan Tho Mass
Yes, which is why the general consensus here is, being on the ground by 14.5V under load.
Sure Mrgs1, it's up to each of us to land at any voltage we want. Its your, money, drone and your decision. You don't have to listen to any other drone owners experience and knowledge.
Fair comment!Sure Mrgs1, it's up to each of us to land at any voltage we want. Its your, money, drone and your decision. You don't have to listen to any other drone owners experience and knowledge.
PatR
Premium Pilot
Landing at a higher voltage only reduces the amount of time you spend in the air with each battery. For those that don’t need or want to fly as long it’s no big deal. There are also those whose flights can be quite short and minimizing time on a battery will allow another brief flight on the same battery.
So we need what we need to use while avoiding depleting a battery to less than 14.4v under load. 14.5v or higher is safer for most.
So we need what we need to use while avoiding depleting a battery to less than 14.4v under load. 14.5v or higher is safer for most.
Hi Baldfield, I tried "glide slop" from 200m away and 75m height today... looks great and "artistic" way to get home.. Even me did it the first time.... sorry that nobody else saw me...?
PatR
Premium Pilot
