The objective of the present investigation was to determine the aerodynamic characteristics of ejection seat occupants. 3D RANS equations are solved to calculate the aerodynamic coefficient. The commercially available CFD software ANSYS Fluent was used for analysis. An unstructured grid of polyhedral elements is generated for the ejection seat occupant using ANSYS meshing. For investigation, two different models with different positions of seat occupants were built. For validation purposes, the analysis of the sphere is performed at Mach number (Ma) = 0.2. Later on, the analysis was carried out for both models at Ma = 0.2. Finally, the analysis was carried out for different angles of attack (α) = − 15°, − 10°, − 5°, 0°, 5°, 10°, 15°. The two models’ pressure contours and aerodynamic characteristics were obtained. This analysis is helpful in understanding the aerodynamic characteristics of the ejection seat system at different positions and α at subsonic speed.