SetSectorThrust(sector, thrust_vec, thrust_speed);
thrust_vec: This is the vector direction that the thrust should travel. Use a vector variable or the 'x y z' form to express the vector. Because thrust_vec will be scaled1 with the speed, it should be normalized1 so that when it is scaled it will have the magnitude1 supplied by the third parameter.
thrust_speed: This is the flex speed of the thrust. Thrust_vec will be scaled by this flex. And if thrust_vec is normalized, this speed flex will become the length1 of the thrust vector. If you make the speed 1, thrust_vec will not be changed when it is scaled.