How to get aerodynamic params for "lift and drug" plugin of my own props?

Hello, I want to make own model of copter for Gazebo sitl for my university project, but I can’t understand how I can get information about props for “lift and drug” plugin for 3-blade props(gemfan 1050-3)? Also how to make 3-blade props?

Also if you can give some guides of this plagin and making own model for sitl, I will be happy))

The documentation for the lift-drag plugin is here: Gazebo : Tutorial : Aerodynamics

This is for the classic version of Gazebo which is EOL, however the current version (Gazebo Jetty) uses the same parameters for the lift drag plugin.

Thanks, I found this yesterday, but if I understand correctly, I should know all the aerodynamic parameters of my props, but gemfan said they couldn’t provide them, so this question is still relevant.: How do I get all these parameters at home? Is there an instruction for their approximate calculation?

You’ll need to select an airfoil profile that approximately matches your props at somewhere around mid blade, then approximate the CL and CD curves for that profile with piecewise linear curves used in the plugin.

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Thank you, I will try, and after that update this topic. But now I found problem with sitl in stable versions, so looking for that (In SITL motor 1 does not spin with motor test).