How to increase airspeed automatically when flying upwind?

ArduPlane Plane 4.1
1

Hi, I am new to Ardupilot, sorry if this has been answered before:
I converted Volantex Ranger 2M to quadplane and it flies nicely, I have flown several fully automatic missions with it. I use pix32v5 and Arduplane 4.1.2. However, on last flight there was quite strong wind and it looked like the plane struggled to move forward when it experienced gusts of headwind.

I tried in simulator and it looks like if I increase wind speed over airspeed, then the plane cannot complete its mission any more, it will be carried downwind. I assume that there is a mechanism to make airplane to increase automatically its default airspeed, but I cannot find, how. Please help;-)

2

The default airspeed in automatic flight modes is TRIM_ARSPD_CM.
Also you may want to look at ARSPD_FBW_MIN and ARSPD_FBW_MAX.

3

There is a param for min ground speed.

https://ardupilot.org/plane/docs/parameters.html#min-gndspd-cm-minimum-ground-speed

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4

Hi.

What happens when max airspeed is achieved and min ground speed is not?

How to get out of such a situation?

5

Air speed limits will always win. So you will end up at max airspeed and wherever ground speed that works out to with the given wind.

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6

Hi, what will happen if airplane is climbing and throttle is already maxed and then it does not meet its ground speed requirement? Does it reduce pitch?

7

yes, but it depends on how you have the TECS setup.

https://ardupilot.org/plane/docs/tecs-total-energy-control-system-for-speed-height-tuning-guide.html

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