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Journal of Projectiles, Rockets, Missiles and Guidance >

2021 , Vol. 41 >Issue 1: 1 - 7

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2021.01.001

Nonlinear Angular Motion Analysis on Dual-spin Projectile

  • LI Jiaxun 1 ,
  • SHEN Yuanchuan 2 ,
  • JIA Zhenyue 1 ,
  • YU Jianqiao 1
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  • 1 Beijing Institute of Technology,Beijing 100081,China
  • 2 Beijing Institute of Electronic System Engineering,Beijing 100854,China

Received date: 2020-01-14

  Online published: 2025-02-11

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Abstract

The research on nonlinear angular motion of the dual-spin projectile is carried out to analyze the flight stability. A complex angle of attack motion equation is established, and the possible equilibrium state of the dual-spin projectile is obtained. Then the necessary condition of the stable conical motion under aerodynamic nonlinearity is provided. On the other hand, the boundary conditions of dynamic instability for dual-spin projectile are achieved, and the bifurcation characteristics are identified at the bifurcation point. Further, the equilibrium characteristics of the nonlinear system around the bifurcation point are discussed through the analysis of the reduced equation. The results show that the cubic nonlinear static moment may cause unattenuated conical motion and the lateral force of the head will cause dynamic instability of the dual-spin projectile.

Key words： dual-spin projectile; nonlinear angular motion; conical motion; bifurcation analysis; motion stability

Cite this article

LI Jiaxun , SHEN Yuanchuan , JIA Zhenyue , YU Jianqiao . Nonlinear Angular Motion Analysis on Dual-spin Projectile[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2021 , 41(1) : 1 -7 . DOI: 10.15892/j.cnki.djzdxb.2021.01.001

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