File:Aerodynamic performance predictions of a SA-2 Missile using Missile Datcom (IA aerodynamicperfo109454578).pdf

This study reports an analysis of the aerodynamic performance characteristics of an SA-2 type missile conducted using empirical codes. The Missile and Space Intelligence Center (MSIC) supplied the missile geometry, which was incorporated into the MissileLab interface. The study evolved based on the geometry changes MSIC recommended. Results obtained using Missile DATCOM versions 7/07 and 8/08 are compared along with performance data provided by the project sponsor. These data varied from experimental to empirical, as well as those generated using Simulink modeling. Data comparisons were carried out for various Mach numbers and angles of attack. For the most part, excellent agreement was obtained, especially when Missile DATCOM 8/08 was used, for the overall axial force coefficient value at the conditions explored validating the approach used. Some comparisons also were generated for specific fin deflections conditions. Additionally, a Computational Fluid Dynamics model was included as part of the analysis, using ANSYS CFX, a compressible flow solver. With these results and the predictive tool, the in-house capability at the Naval Postgraduate School to generate such data for future missile designs has been successfully enhanced.