Fixedwing throttle 0 in mission mode

[gayass17]

hello
I use pixhawk 2.1 as the hardware and px4 version is 1.9.2.
My fixed-wing plane took off in manual mode. But when I change flight mode into mission, autopilot will shut down throttle.
What should I do to slove this problem?
This is flight review: https://logs.px4.io/plot_app?log=f6fe68da-652e-46c7-8d1c-758b804a8939
Thanks.

[julianoes]

@gayass17 is it possible that you don't have an airspeed sensor connected?

@RomanBapst do you have an idea where these filtered_airspeed values come from that we see in the plot?

[gayass17]

Yeah, another user told me airspeed sensor is not necessary. Should I connect one?

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[julianoes]

FYI @sfuhrer

[sfuhrer]

@gayass17 did you solve your problem?

Isn't it to be expected that the throttle drops to 0 when your altitude setpoint is well below your vehicle when you switch into mission? If you don't want to have it dropping to 0 you'd have to adapt FW_THR_MIN

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[julianoes]

I'm concerned that we have garbage data like in the plot showing up for airspeed when there is no airspeed sensor connected.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. Thank you for your contributions.