- Joined
- Jan 20, 2019
- Messages
- 183
- Reaction score
- 143
- Age
- 41
Today I did another test flight with strong wind. Position Hold is rock solid. RTH land point is 0.5 to 1 m away from start location. For windy conditions better than stock Typhoon H.
RTH Landing is perfect without bouncing. Also manual landing feels better than stock Typhoon H especially with wind as it was today. Top speed was 82km/h. If it is fast too far away, RTH works also in case you are flying without GPS simply by flight mode switch. No fiddling around with touchscreen any more. Switch between GPS and no GPS with flight mode switch (or another) was a long awaited feature!
The descent speed is a little bit too conservative, only ~1,2m/s. This could be more. Yaw speed is too harsh with standard settings n but this can be tuned by channel settings on the ST16.
Also landing gear will not go up. I'm still a beginner. I have to check, what I can/must tune by QGC and if channel for landing gear is set correctly. I will report.
br HE
Hi HE,
I'm glad to hear that you are happy with the Thunderbird and that its performance seems to be pretty good.

That 82 km/h makes it a pretty fast commercial photo drone, only the Inspire 2 is faster with its 94 km/h top speed, but I'll take a closer look into that problem some day, I think that there could be a small possibility for improvement, like 13 km/h... ;-) I'm currently working with the SD card, it seems I could reuse plenty of code from the Omnibus F4SD target. When it comes to drones with no SD card, we could save few waypoints into the RAM during runtime with the Dataman of the PX4, but any more complex pattern will not fit there.
Regarding the descent speed; that can be adjusted from QGroundcontrol parameters, they are pretty conservative at the moment indeed, the RTH landing speed being in fact even slower, 0.7 m/s. See the Safety page, the setting is in the bottom.
The yaw, if you ask me, needs a bit more power for my taste, but if you see it being too harsh, maybe I'll tone it down a bit for the next release, or at least won't increase it for the public parameter file. Thanks for the feedback, it is good to have a solid and easy parameter set that is a good for everyone to start with.
About the landing gear; did you try to cycle the switch more than once? My parameter file should have them properly configured, but I'll take a look into it. When the gear switch is cycled, the blue led on the landing gear control board should either blink or be solid, depending on the switch position. Also please note, that the gear, like the pitch channel of the CGO3+, can be operated only when the drone is armed.
Br,
TR