I've made a spaceship to my game that uses a flywheel as attitude control (it is just a single flywheel, in the same rotation axis as the ship, so the player can aim around) The problem is: The game is a bit realistic, and I want to make the flywheel and ship combination turn using law of the physics (including inertia), but I've got the following problem: How much force or impulse I apply to a flywheel and to the ship, with the data that I know being how much power I can draw from the ship powerplant? Being more direct to those that do not understood: How I convert energy into impulse? A quick explanation about the ship and the flywheel shape: the flywheel is a "tube", that is: a circle with a round hole. The ship is like the flywheel, but much heavier, and the internal radius of the ship is just a tad bigger than the external radius of the flywheel.

Huh... How I use that said coefficient?

(in fact I already planned the difficulty modes, each one will use a completly diffrent system)

And the powerplant is not a arbitraty value, specially because I am usign a real-world engine and power-plant, and I like to make games where the "nice" thigns on the manual are accurate.

So, that do not helped much :(