Research on the Effect of the Base Cavity with Different Length Upon the Projectile

DOI

10.2991/mcei-15.2015.6How to use a DOI?

Keywords

Projectile with base cavity; Terminal length; Flow field; Aerodynamic drag; Numerical simulation

Abstract

Base cavity configuration is a useful choice to reduce the base drag of projectiles. This paper interests in the influence of the cavity length on the projectile with base cavity. Base cavity with different length, including terminal one, were investigated numerically. The flow field parameters (Mach number, stream line, temperature and pressure), aerodynamic drag coefficient of the projectile with different length base cavity under a supersonic flow condition were obtained. Numerical results show that the recirculation region which is formed inside the base cavity plays a pivotal role for the reduction of the drag. With the increasing of the cavity length, the aerodynamic drag of the projectile reducing monotonously, even the length increases into a terminal one. If others influencing factors (such as charge mass, structural strength, etc.) were considered, a deeper base cavity is benefit to reduce the aerodynamic drag of the projectile and increase the range of fire.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Haibo Lu
AU  - Xianrui Shi
AU  - Shiying Tian
AU  - Quan Gan
PY  - 2015/06
DA  - 2015/06
TI  - Research on the Effect of the Base Cavity with Different Length Upon the Projectile
BT  - Proceedings of the International Conference on Management, Computer and Education Informatization
PB  - Atlantis Press
SP  - 22
EP  - 25
SN  - 2352-538X
UR  - https://doi.org/10.2991/mcei-15.2015.6
DO  - 10.2991/mcei-15.2015.6
ID  - Lu2015/06
ER  -