Research on Flow Field Structure of Slender Spinning Missile under Coupling of Conical and Spinning Motions

doi:10.3969/j.issn.1000-1093.2018.03.014

Abstract

Abstract: The aerodynamic characteristics of slender spinning missile with canard rudders under the coupling of conical and rotational motions are studied by using CFD numerical simulation and rigid moving grid technique. The aerodynamic coefficients of slender spinning missile are analyzed,and the changing curves of aerodynamic coefficients with spinning angle are given. The evolutionary trend of rudder-induced vortex is studied, and the tail flow fields at different times are compared. The result shows that the characteristics of conical and spinning motions are taken into account in the flow field structure of slender spinning missile, and these two kinds of motions not only interfere but also blend with each other. The evolution of vortices is more complex, and the aerodynamic curves are periodically and regularly oscillating. The destructiveness of vortex structure is aggravated with the increase in angle of attack, and the pressure around the fins is also changed. Key

Key words: spinningmissile, slenderbody, conicalmotion, spinningmotion, aerodynamiccharacteristic

CLC Number:

V211.1⁺5

PENG Cheng， GUO Yang. Research on Flow Field Structure of Slender Spinning Missile under Coupling of Conical and Spinning Motions[J]. Acta Armamentarii, 2018, 39(3): 519-527.

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第39卷
第3期2018 年3月兵工学报ACTA
ARMAMENTARIIVol.39No.3Mar.2018

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