[IEEE 2014 International Conference on Computer, Control, Informatics and Its Applications (IC3INA) - Bandung, Indonesia (2014.10.21-2014.10.23)] 2014 International Conference on Computer, Control, Informatics and Its Applications (IC3INA) - Hybrid rotational and revolving simulation of propeller in aircraft with two propellers by fractal animation model: Based on shifting centroid method in double mode from a fixed point