Complex Analysis for Angular Motion of a Spinning Projectile with One Pair of Canards

doi:10.3969/j.issn.1000-1093.2021.02.009

Abstract

Abstract: The stability of coning motion of spinning projectile with one pair of canards cannot be directly analyzed by the analytic method due to the aerodynamic asymmetry. The angular motion model and complex analysis method for the spinning projectile are studied. A complex angle-of-attack motion equation is established, and a scaling factor is introduced to the asymmetric aerodynamic term in the equation. On this basis, the analytical expressions of complex angle-of-attack motion equation under different actuator deflection angles are obtained. The convergence process, steady state and resonance of the model are analyzed. The validity of complex angle-of-attack motion equation is confirmed through numerical simulation, and the cause of resonance instability under sinusoidal actuator deflection is revealed.

Key words: spinningprojectile, singlechannel, angularmotion, stability, complexangleofattack

CLC Number:

TJ760.11

CHEN Cheng, ZHAO Liangyu, XIE Haoyi, HAO Xiaobing. Complex Analysis for Angular Motion of a Spinning Projectile with One Pair of Canards[J]. Acta Armamentarii, 2021, 42(2): 308-319.

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第42卷第2期2021 年2月
兵工学报ACTA ARMAMENTARII
Vol.42No.2Feb. 2021

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