Subobject

Subobjects cannot be nested, though dedicated heliblades may be placed on subobjects.

Turret
Turrets rotate at a rate of $$\min \left( \frac{250}{\sqrt{m}}, 250 \right)$$ degrees per second, where $$m$$ is the mass on the turret.

Collision
The rotation of a turret may be physically constrained by collisions: the center of a block mounted on the turret cannot pass through another block's space.

Connections
The turret is connected to the main construct only through the bottom face. If the block on this face is destroyed, the turret will be disconnected.

The other five faces all connect to the turret itself.