Computer simulation is an important scientific tool in aeronautical engineering, allowing engineers to study the behavior of aircraft and their components using digital models before conducting practical tests. This technology is used to analyze airflow around wings, study the forces acting on aircraft structures, and evaluate the performance of engines and control systems under different operating conditions. Simulation software also helps engineers test designs, compare results, and identify potential problems before manufacturing actual components, thereby reducing time and costs while improving design quality. Furthermore, simulation is used to train pilots to handle emergency situations and changing weather conditions within safe virtual environments. Despite its advantages, the accuracy of simulation results depends on the validity of mathematical models, the quality of the data, and the assumptions used. Therefore, the results must be verified against experiments and actual tests whenever necessary. Thus, computer simulation contributes to the advancement of aviation technologies and enhances safety and engineering efficiency.