To develop the guided spin-stabilized projectiles with high hit precision, a class of dual-spin-stabilized projectiles equipped with canards in atmospheric flight is studied. The work reported here focuses on the spin-rate property for the forward and aft bodies of this projectile as well as the coupled effect between the two bodies. By taking into account the distinctive spin rates of the two bodies, the mathematical model of motion around the center of mass was established. The variation law of spin rates, several influencing factors, and the induced change in ballistic drift and angle of attack were analyzed through numerical trajectory simulation. To validate the numerical results, both the simplified and coupled analytical solutions for spin rates were obtained by solving the dynamic model analytically under different conditions. Both the numerical and analytical results indicate that the spin-rate property is influenced by the canards actuation, the ratio of the moment of inertia, and the connected constraint between the two bodies in varying degrees. The analytical solutions offer an alternate tool for optimal design of parameters for this projectile.
Analysis of Spin-Rate Property for Dual-Spin-Stabilized Projectiles with Canards
Journal of Spacecraft and Rockets ; 51 , 3 ; 958-966
2014-04-21
9 pages
Article (Journal)
Electronic Resource
English
Analysis of Spin-Rate Property for Dual-Spin-Stabilized Projectiles with Canards
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