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Navigator: fix VTOL land waypoint calculation #22773

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merged 1 commit into from
Feb 19, 2024

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sfuhrer
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@sfuhrer sfuhrer commented Feb 19, 2024

The setpoint.yaw can be NAN, and this made the calculated land point NAN as well. Looking at the current yaw is anyway a better way to approximate the course over ground that fundamentally should be used.

NB As we only need a rough idea of the current course over ground, I think it's not worth to calculate it by using the ground velocity, as then we'd have instabilities when approaching 0 ground speed.

Changelog Entry

For release notes:

Bugfix 

The setpoint.yaw can be NAN, and this made the calculated land point NAN
as well. Looking at the current yaw is anyway a better way to approximate
the course over ground that fundamentally should be used.

Signed-off-by: Silvan Fuhrer <[email protected]>
@sfuhrer sfuhrer added the Hybrid VTOL 🛩️🚁 Multirotor + Fixedwing! label Feb 19, 2024
@sfuhrer sfuhrer requested a review from MaEtUgR February 19, 2024 12:32
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That works yes.

Would it be an exageration to check if there is a yaw setpoint and use it if it's not NAN? I'd prefer that because otherwise you often have these constantly slightly changing altitudes and yaws when you switch in and out of things. Maybe it's a detail and should be improved later.

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MaEtUgR commented Feb 19, 2024

_navigator->get_vstatus()->is_vtol just before the changed part

Never mind, what I wrote would apply for multicopter 🤦‍♂️

@MaEtUgR MaEtUgR merged commit 8a75733 into main Feb 19, 2024
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@MaEtUgR MaEtUgR deleted the pr-fix-vtol-land-backtransition-main branch February 19, 2024 13:54
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2 participants