Labroides
Core User of DJI
Flight distance : 9991457 ft
Australia
Offline
|
Did you know that pressing RTH a second time cancels RTH?
But if you have lost signal, pressing the button won't be able to send anything to the Phantom.
Looking at the flight data, there are a number of problems.
1. You started the flight with a partially discharged battery (47%)
2. The weather was below freezing
3. You had multiple warnings that the battery was unable to deliver the required power
This is from a combination of 1 & 2.
4. You were flying at 700 ft where the wind is stronger than on the ground
When I look at the data, I see a period from 3:28.1 - 3:33.2 where you used full right stick backwards but the Phantom only accelerated to 4 metres/sec.
This indicates that it was dealing with a strong wind from behind the Phantom
Then from 3:33.4 - 3:41.1 where you left the right stick centred, the Phantom came to a stop and then started moving to the northwest and reached 4 metres/sec while it should have been hovering and holding position.
This further confirms that there was a strong high level wind blowing the Phantom to the northwest.
Putting this all together, your flight was in trouble before you launched with freezing weather and a low battery.
You flew high and away with a strong wind that the Phantom was unable to fight.
Three seconds after losing signal, the Phantom would have initiated RTH itself.
But RTH speed is only 10 m/s in still air (slower than the 16 m/s full speed) and the Phantom would not have been able to make headway towards home.
One possibility is that the battery just shut down due to cold and low battery power, which would have crashed the Phantom.
If it did not crash, the Phantom would have autolanded once it reached critical low battery level.
The search area would be further to the northwest but it's not possible to tell how much past the last recorded location.
|
|