vehicle stops when colliding with ramp

I have a vehicle that floats above a terrain object and will “float” over various hills/bumps/etc. I would like to create a mesh for a ramp that the vehicle can hit to get launched into the air. the vehicle is using a capsule collider and the ramp is using a mesh collider. The ship will always come to a complete stop when colliding with the ramp instead of climbing the ramp and then flying into the air.

I also tried removing the mesh collider from the ramp and instead using rotated box colliders. The same thing happens in both instances. Any ideas?

EDIT
here is the most important part of the flight script that controls how high the vehicle floats above the terrain

function FixedUpdate()
    {
    //other code for random stuff

transform.position = Vector3.Lerp(transform.position, new Vector3(transform.position.x, GetHoverHeight(), transform.position.z), hoverHeightStrictness);

//more code for more random stuff
    }
        function GetHoverHeight()
        	{
        		if( transform.position.y > Terrain.activeTerrain.SampleHeight(rigidbody.position) + (hoverHeight + buffer)) {
        			if(boosting){
        				floatHeight -= (gravity + boostGravityMultiplier);
        			}else {
        				floatHeight -= gravity;
        			}
        			return floatHeight;
        			//~ thrust = 0;
        		}
        		else if( transform.position.y < Terrain.activeTerrain.SampleHeight(rigidbody.position) ) {
        			floatHeight = Terrain.activeTerrain.SampleHeight(rigidbody.position) + (hoverHeight);
        			return floatHeight;
        		}
        		else if( transform.position.y < Terrain.activeTerrain.SampleHeight(rigidbody.position)+ (hoverHeight - buffer)){
        			floatHeight += climbSpeed;// Terrain.activeTerrain.SampleHeight(transform.position)+ hoverHeight;
        			return floatHeight;
        			//~ thrust = 0;
        		}
        		else {
        			floatHeight = (Terrain.activeTerrain.SampleHeight(rigidbody.position) + hoverHeight + buffer);
        			return floatHeight;
        			//~ thrust = 0;
        		}
        		
        		return floatHeight;
        	}

You are moving your ship by changing it’s transform.position. That will defeat any physical interactions.

Whatever you do to make the ship go over ramps will work to also keep your ship floating above the terrain, and even let it “get air” off steep rises in the terrain.

For example, you can make a physical ship float just by having the collider somewhat below the ship’s visual mesh.

So fix how you are floating, then you’ll be able to get the ramps working.