Model and simulation of the AS350B1 helicopter

The continuous progress made in computer science and mathematics has allowed simulation to take a growing place in modern engineering. It is today a strategic stake for research as well as industry. Indeed, it allows a better apprehension of many fields of study, going from physics to biology through economics to mention a few. In aeronautics, simulation might come before production to avoid any fatal error in aircraft safety, or after production as a maintenance tool. It has many purposes, but it is always a compromise between the degree of subtlety of modeling and the calculation capacity of a computer. This paper presents and compares two simulation codes in rotorcraft engineering. Both are used professionally by private companies. The main purpose is to enter one complete model of helicopter in both simulation software and to compare their outputs, understanding the models used in each case. The helicopter model is entered gradually, from main rotor to stabilizing back elements. Final results display the outputs of trim simulations performed on both programs