Research on dynamic stability of rolling missiles employing direct/aerodynamic force compound control

Lu Bai, Defu Lin, Duo Zheng*, Tianyu Lu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The direct/aerodynamic force compound control can enhance the maneuverability and response characteristics of missiles, and the dynamic stabilization is the precondition of normal operation for rolling missiles. Aiming at the stability problem caused by the cross-coupling effect of rolling missiles employing direct/aerodynamic force compound control, proposing a typical topological control system structure described by the complex coefficient theory, and deducing the dynamic stability conditions. Firstly, the mathematic model is established based on the kinematics and dynamics theories of rotating airframes and the direct/aerodynamic force compound control mechanism. Then, a three-loop autopilot and the direct/aerodynamic force ratio distribution method are designed to establish the complex summation model of the compound control system by selecting suitable complex variables. Furthermore, deducing the dynamic stability conditions and verifying them by numerical simulations. Finally, the stable regions of the rolling missile in different cases are obtained and found to be influenced by many factors, such as parameters of the autopilot, hybrid force distribution proportion and rolling rate. The derived dynamic stability criterion is effective for evaluating the stability of rolling missiles employing direct/aerodynamic force compound control and the research method used in this paper can provide reference for the stability study of strongly coupled nonlinear systems.

Original languageEnglish
Pages (from-to)837-855
Number of pages19
JournalProceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Volume238
Issue number9
DOIs
Publication statusPublished - Jul 2024

Keywords

  • Direct/aerodynamic force
  • complex coefficient theory
  • cross-coupling effect
  • dynamic stability
  • rolling missile
  • three-loop autopilot

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