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» Wed Sep 21, 2016 11:19 am

I suppose you have the forces right. Wich in my head is not that easy. You have the lift force, a vector 180 degrees on the gravity vector. And the force that make it move, vector aligned with the plane. Because they happen at the same time, you should combine both vectors in 1 force. Think my math will try and error and mostly error a while before i get that right.

The angle of the plane, on the other hand, seems easy. When its falling, it turns clockwise. When its gooing up, it turns counter clockwise. The physics expression VelocityY tells you if it goes up or down. I geuss you set the angular velocity arcording to the VelocityY. something like (-1 * VelocityY) / x. Where you have to find out what x must be to have a nice rotation.