Collision detection with the ground

I’m trying to make a collision of my aircraft with the ground. No problem here. But what if you land your aircraft “too hard”. For exampe - helicopter. If you come down slowly and with good angle, you will land properly. But if you fall down to fast, I want to make it explode. Something about compare fall down speed to the ground, but I’ve no idea how to do it.:frowning:
Any idea please?

Thank you

The ground usually doesn’t have any speed :slight_smile: so all you need to ‘compare’ is the vertical velocity of the helicopter at the point it touches down. How you measure the velocity depends on how you’re handling the movement of the helicopter, but should be easy to derive in your movement script.