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Dynamic bifurcation characteristics analysis on fixed-canard dual-spin projectiles
Received date: 2015-02-03
Revised date: 2015-04-01
Online published: 2015-07-14
Supported by
National Natural Science Foundation of China (61350010)
The nonlinear dynamic bifurcation characteristics of a fixed-canard dual-spin projectile are analyzed, and the influence of the system parameters on the dynamic bifurcation characteristics are researched. Based on the asymmetry characteristic of fixed-canard dual-spin projectiles, the variations of equilibrium points with installation angle of the homodromous fixed-canard are presented by the numerical method, and then the bifurcation diagrams are obtained. There are three stable equilibrium points, only one of which is the expected stable equilibrium point, so the range of homodromous fixed-canard installation angle needs to be limited to make the fixed-canard dual-spin projectile stable. Then the bifurcation diagrams with various system parameters are drawn when the trajectory correction component rotate periodically and when it is fixed, the influence on bifurcation characteristics of the system by structural and aerodynamic parameters are summarized. The results indicate that the aerodynamic parameters and the flight velocity of the fixed-canard dual-spin projectile have a great influence on the bifurcation characteristics of the system, so the parameters of system should be reasonably selected to make fixed-canard dual-spin projectiles have good aerodynamic characteristics.
XU Nuo , YU Jianqiao , WANG Yafei . Dynamic bifurcation characteristics analysis on fixed-canard dual-spin projectiles[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(12) : 3798 -3808 . DOI: 10.7527/S1000-6893.2015.0096
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