computatıonal fluıd dynamıcs predıctıon for sıde jet controlled mıssıle lıke geometrıes and comparıson wıth experıment

ekİn aĞsarlıoĞlu

ROKETSAN Missile Industries Inc., P.K.:30, 06780 Elmadağ-Ankara-Türkiye, eagsarlioglu@roketsan.com.tr

alİ akgÜl

ROKETSAN Missile Industries Inc., P.K.:30, 06780 Elmadağ-Ankara-Türkiye, aakgul@roketsan.com.tr

Abstract: Side-jet controlled missile has more capability for maneuvering than aerodynamically-controlled missile at lower dynamic pressure, and it can be used when faster response is needed. In this study, two generic missile models with side jets, of which experimental data are available in literature, are analyzed by commercial CFD software FLUENT. Models were both tested in supersonic free-stream and sonic jet exit conditions in wind tunnels. For Model-1 with two different configurations, calculated force amplification factor “K” and interaction moment center” XCPi” values are compared with measured values. For Model-2, surface pressure coefficient data at three different roll angles are compared. Also a turbulence model study is conducted for Model-1. Experimental data and CFD results are in good agreement with each other for both generic missile models, despite some discrepancies. As a result, a numerical methodology for solving side-jet controlled supersonic missile problems has been developed. This methodology can be used as a part of side-jet controlled missile design.