The numerical wind tunnel simulation software Digital Wind Tunnel (DWT, also known as PSW) is suitable for three-dimensional dynamic analysis of 3D aircraft, ship hulls or 3D objects. The complete set of DWT software also includes three additional modules: 3D shape modeling drawing tool Loftsman/P, computational fluid dynamics DWT/CMARC, post-processing drawing analysis Postmarc. DWT software uses computational fluid dynamics and panel method to calculate and analyze aircraft dynamic parameters. Software modules include: