Numerical Study on Flight Stability of Fin-Stabilized Shell of Small Length-Diameter Ratio and High Aspect Ratio

Abstract:

In order to obtain the flight stability of a flip-out tail fin shell of small length-diameter ratio and high aspect ratio, this paper calculates the supersonic viscous flow of the shell with the finite volume method, when the angle of attack exists. The six degree of freedom simulation is carried out with the previous results. The characteristics of the flow field around the shell ,static stability and dynamic stability are analyzed. The results show that lift coefficient can be described by linearity rule. Position of pressure center, which accounts for 10.3% of the total shell length, ranges from 0.3305 to 0.3945m. When initial disturbances are between 5and 9rad/s, maximum attack angle, which is apart from about 20m in the muzzle, is less than 5.5°. The amplitude of the angle of attack attenuates very fast and is close to 0° in 100m away.

• Periodical: Applied Mechanics and Materials (Volumes 341-342)
• Pages: 540-545
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.341-342.540
• Online since: July 2013
• Authors: Fu Zhang, Da Yong Xie, Wen Jun Ruan, Hao Wang
• Keywords: Aerodynamic Characteristics, Flight Stability, High Aspect Ratio, Small Length-Diameter Ratio, Tail Fin Shell

References

[1] Mark Costello, Stephen Gatto, Jubaraj Sahu: AD. 2007-ARL-TR-4270.

[2] Gene Cooper, Frank Fresconir, Mark Costello: AIAA. 2010-7636.

[3] Li Jian-ping, Bai Chun-hua: Journal of Aerospace Power. Vol. 25(2010), p.47.

[4] Liou M-S: AIAA 2003-4116.

[5] Charles Hirsch: Numerical computation of internal and external flows (Elsevier Publications, Oxford 2007 ).

[6] Xu Ming-you: The exterior ballistics of rockets (Harbin Institute of Technology Press Publications, Harbin 2004).

[7] Song Pi-ji: Exterior ballistics of firearms and rocket (Ordnance Industry Press Publications, Beijing1993).

[8] Zhao Run-xiang, Cheng Shao-song, Cui Long-bo, Kang Jiu-sheng, Wu Ping, Tan Jun-jie: Journal of Ballistics. Vol. 11 (1999), p.58.

[9] Mao Yong-jian, Li Yu-long, Ji Yong-qiang, Yan Yuan: Acta Armamentarii. Vol. 31 (2010), p.84.

[10] Tao Ru-yi, Jiang Kun, Zhao Run-xiang, Wang Hao: Computational Physics. Vol. 27 (2010), p.51.