Gazebo Fixes Major Aerodynamic Bug in AdvancedLiftDrag System
TL;DR. The Gazebo simulation platform corrected a critical bug in its AdvancedLiftDrag system affecting pitching moment computations in aerodynamic models. - The bug caused the alpha-based pitching moment to be incorrectly overwritten by sideslip contributions, nullifying configured parameters. - The fix ensures proper physics application by correctly accumulating contributions, altering aerodynamic behavior in some existing models. - Users of the AdvancedLiftDrag plugin should update to versions `gz-sim 10.5.0`, `9.6.0`, or `8.15.0` and retest models.
- Gazebo corrected a bug in AdvancedLiftDrag affecting pitching moment calculations.
- Previously, alpha-based pitching moment contributions were overwritten, ignoring Cem0 and Cema parameters.
- The fix correctly accumulates sideslip contributions, restoring intended aerodynamic physics.
- Users must update `gz-sim` and re-test models, as aerodynamic behavior may change.
Sources
- Announcement: Fix for AdvancedLiftDrag Pitching Moment Computation — discourse.openrobotics.org