V-Tail model

PX4 Autopilot
1

Hello,

I have a plane with a V-tail but I don’t know if it exists on PX4 Gazebo because I don’t find any model like that. Do you know where I can find it or if it is possible to modify an existing model like the advanced_plane model to switch to a V-Tail model ?

I would like to implement a model that looks like this one for example:

image
image1080×1080 98 KB

Then I will have to change some parameters like the aerodynamic coefficients. If I don’t have all the values for inertia for example, do you think it is a real problem for the simulation ?

Thanks a lot !

2

Hi @SPrsn , I don’t think that model is implemented in GZ. The closer you can get to it is Gazebo Vehicles | PX4 Guide (main) but you’ll have to change completely the tail

I’ve never done parameter estimation for creating a sim model of a real FW but you might want to try Advanced Lift Drag (AVL) Automation Tool | PX4 Guide (main) and see if it helps

3

Thanks @Benja for your response.

Do you know how to modify the tail and switch to a V one instead of a T-tail ?

I’ll try to look at the second link you’ve sent. It seems to be a very interesting approach using AVL. Perhaps it can help.

4

The problem I see is that this method should enable me to get the aerodynamic coefficients of my V-Tail Model. I worked with XFLR5 previously. So I think that I can obtain these coefficients. However, I have two problems. First, in which configuration should I compute the coefficients (with flaps, elevators … or everything at a zero-degree configuration) ? Secondly, putting the coefficients inside the plane plugin will not correspond directly to an aircraft with a V-Tail. Do you have an idea of how I can proceed ?

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