Nigel_
Second Officer
Flight distance : 388642 ft
United Kingdom
Offline
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Aerotheque Posted at 2017-7-5 06:33
Hi nigel,
I was more concerned with not being able to engage RTH once the critical warning activated, as well as what caused the critical warning to kick in so early. This is the first time I have had a critical warning (i would never let it drop to 10%) and it caught me off guard.
Yes, I couldn't think of a better word than "complaint".
I think the answer was a combination of the height and the voltage drop due to using full throttle. The aircraft was just being cautious and making sure it could get down by 10% even if there was a strong gust of wind or an updraft.
RTH starts with flying up to the RTH altitude and using extra power to do so, the opposite of what is required if the battery voltage goes critical. Not surprising it doesn't allow it, although in some circumstances you can end up landing with a lot of battery left, especially if you are in sports mode.
10% is effectively an empty battery, below that is for emergency use only, it has to restrict motor power and will start to struggle against wind, you didn't have a lot left. |
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