Motion Characteristics of the Small Caliber Anti-aircraft Gun Correction Projectile Subjected to a Pulse Action

doi:10.12382/bgxb.2021.0302

Abstract

Abstract: A complex attack of angle equation and a complex deflection angle equation are established to study the motion characteristics of small caliber anti-aircraft gun correction projectile subjected to the pulse action. The pulse action process is divided into two processes: direct force action of pulse and aerodynamic action caused by pulse. The analytical solutions of the complex angle of attack equation and the complex deflection angle equation of the two processes are deduced，respectively，to obtain the expression of the average deflection angle，and the generation mechanism of the velocity deflection angle is analyzed.The correctness of the analytical solutions is verified by comparing the simulated result with the numerical solution.The results show that the pulse thruster should be installed in front of the center of mass of fin-stabilized project, so as to maximize the change of velocity direction produced by a single pulse thruster；the aerodynamic action caused by the pulse has a much greater impact on the velocity direction of the projectile than the direct force action of the pulse.The pulse action lead to a speed increase in the direction perpendicular to the thrust force of the pulse thruster.

Key words: smallcaliberanti-aircraftguncorrectionprojectile, pulsethruster, angularmotion, analyticalsolution, trajectorycorrection

CLC Number:

TJ412⁺.5

YANG Zhiwei， WANG Liangming， CHEN Jianwei， YIN Yongyang. Motion Characteristics of the Small Caliber Anti-aircraft Gun Correction Projectile Subjected to a Pulse Action[J]. Acta Armamentarii, 2022, 43(6): 1337-1345.

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