Science Fiction, Science, Mathematics, Game Design, Scaling.
thrusters are from the center of the ship, which depends on its length. Just as with engines, we can assume thrusters are made larger, and more powerful, with the rest of the ship: τ ∝ F × l = l3× l = l4 The moment of inertia for a cube is proportional to its mass times its length squared, or l5.