120ccpm
Captain
Flight distance : 1245115 ft
United States
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Ice_2k Posted at 1-20 00:21
To be fair, with the M2 the problem is not that clear cut because of the OA sensors. Tilting the AC all the way to fly faster would disable the sensors, which is clearly not ideal. I'm pretty sure that's actually the exact reason why the Mini behaves in the same manner. DJI just used the same RTH logic they already had for other drones. For the Mini however, because of the lack of sensors, there is no downside to tilting it even more when not making decent progress coming home. You're not losing any sensor capability and you're not flying unnecessarily fast. If I was implementing this, I think the correct way is not to have separate P/S modes for RTH, as such modes really make no sense for automated flying. They are basically only there to define what "full stick tilt" means when the user is flying. When a computer is flying, the extra "smoothness" we get from P/C mode is not needed, that's just useful for our imprecise fingers. The RTH should simply have a predefined speed the Mini wants to travel at (say the 18mph max speed of P mode) and "step on the throttle" as much as it needs to in order to reach that speed. If flying into a 3mph wind, it would just fly at 21mph airspeed. And again, because this seems to be coming up over and over again. The Mini doesn't need to measure wind speed (although it can, the information is readily available from its tilt angle and its ground speed but let's say for the sake of the argument that it can't do that). It just needs to try and obtain a certain ground speed.
Simply increasing the speed might be possible, but I won't be surprised if there is actually more behind the different modes than just the max tilt angle. There might be a bunch of other parameters that get tweaked to account for the increased speed (gain and stuff like that), and that's why it might be easier for them to switch mode than just increase tilt.
Moreover, I like the two-stage approach for marketing reasons, not encourage people to ignore windy conditions, but sending the message that the AC is in "emergency" mode, flying beyond its standard capabilities. Just an opinion, of course...
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