Aerodynamic Characteristics of Projectile with Exotic Wraparound Wings Configuration

Fu Zhang, Wen-Jun Ruan, Hao Wang, Chen-Guang Zhu, Meng-Hua Zhang

(School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)



Abstract:

A projectile with exotic wraparound wings (WAW) configuration is designed to improve the fin-stabilized projectile shooting quality. Two fin-stabilized projectiles with the same body with and without exotic WAW configuration are simulated numerically by applying the Roe scheme. The shear-stress transport turbulence models and the lower-upper symmetric Gauss-Seidel implicit method are used to solve 3D Reynolds-averaged Navier¡ªStokes equations. The differences in aerodynamic coefficients and aerodynamic characteristics of the projectiles when the Mach number varies from 0.35 to 0.95 are obtained, and the cause of these differences is analyzed. The calculation results indicate that the lift-to-drag ratio of the projectile significantly increases, the rolling moment decreases, and the position of the pressure center of the projectile shows relatively small changes when the exotic WAW configuration is used. Therefore, this projectile can obviously reduce rolling effect, enlarge range and improve flying stability.

Key words:  exotic WAW configuration  aerodynamic characteristic  hybrid structure-unstructured grid  overlapping grid

DOI£º10.11916/j.issn.1005-9113.2014.03.005

Clc Number:V11

Fund: