my Character [spaceship] doesnt seem to be colliding with Terrain

Hello Developers,
i have a problem that i've been stuck with for a few days ,and it seems that i can't just get over it ,
for the character spaceship the rigidbody is added for terrain also the Terrain collider is added + added even the mesh colliders so the spaceship should show some sort of bound when touching the terrain but yet nothing happens it just goes down just like no terrain is added help ?

 

Do you have a 'Mesh' of your spaceship assigned to the Mesh Collider so it knows what to base it's simplified collision mesh on?
Do you have 'Is Trigger' unchecked on the Mesh Collider so it's Rigidbody behaves like a solid?