A Numerical Study on the Effect of the Tail Wing of a Projectile on the Base Drag

Noh, Seonghyeon; Kim, Jongrok; Bang, Jaewon

doi:2019.22.5.625

J. KIMS Technol > Volume 22(5); 2019 > Article

Research Paper

Journal of the Korea Institute of Military Science and Technology 2019;22(5):625-636.
DOI: https://doi.org/10.9766/KIMST.2019.22.5.625

A Numerical Study on the Effect of the Tail Wing of a Projectile on the Base Drag

Seonghyeon Noh, Jongrok Kim, Jaewon Bang

¹Defense R&D Center, Hanwha Corporation
²Ground Technology Research Institute, Agency for Defense Development

포탄의 꼬리날개가 기저항력에 미치는 영향에 대한 해석적 연구

노성현, 김종록, 방재원

¹(주)한화 화약/방산 종합연구소
²국방과학연구소 지상기술연구원

Abstract

Recently, research on projectiles with wings for precision guidance is actively underway. In this study, we analyzed how the tail fins attached to the projectile affect the base drag. Aerodynamic analysis was performed with RANS(Reynolds Averaged Navier-Stokes) equations using FLUENT, a commercial CFD(Computational Fluid Dynamics) code. Through the aerodynamic analysis, the base drag characteristics of the projectile by parameters (number, length, thickness, position, shape of tail fin) were investigated. The results of this study are expected to be applicable to aerodynamic design of tail fins mounted on projectiles.

Key Words: Precision Guidance, Computational Fluid Dynamics, Base Drag, Tail Fin, RANS(Reynolds Averaged Navier-Stokes)