Analysis of Dynamic Stability of Fixed Canard Dual-spin Projectile

doi:10.3969/j.issn.1000-1093.2019.10.003

Abstract

Abstract: Dynamic stability of a fixed canard dual-spin projectile under the condition of arbitrary time-varying roll angle input is investigated. Force equations and moment equations are presented in body fixed plane frame for fixed canard dual-spin projectile, and a state space model for angular motion is established. Dynamic stability is addressed by using Lyapunov method. The dynamic stability of projectile can be determined by solving a Riccati-type linear matrix inequality. The stability factor equation is derived by using complex square root calculation method, and the H_∞ norm of absolute stability is defined based on the bounded real lemma. Absolute stability criteria for fixed canard dual-spin projectile is proposed，including stability factor constraint and H_∞ norm constraint of absolute stability, and the correctness of stability criteria is validated by using exterior ballistic simulation results. Key

Key words: dual-spinprojectile, fixedcanard, Lyapunovmethod, stabilityfactor, H_∞normofabsolutestability

CLC Number:

TJ012.3⁺3

MA Guoliang, CAI Hongming, CHANG Sijiang. Analysis of Dynamic Stability of Fixed Canard Dual-spin Projectile[J]. Acta Armamentarii, 2019, 40(10): 1987-1994.

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第40卷
第10期2019 年10月兵工学报ACTA
ARMAMENTARIIVol.40No.10Oct.2019

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