Influence of Angle of Attack on Initial Ejection Trajectory of Missile

ZHANG Bing;HOU Ming;WANG Dianyu;DONG Youliang

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (2) : 438-448. DOI: 10.3969/j.issn.1000-1093.2021.02.021
Research Notes

Influence of Angle of Attack on Initial Ejection Trajectory of Missile

  • ZHANG Bing, HOU Ming, WANG Dianyu, DONG Youliang
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Abstract

For the instability of separation process of missile, the influence of angle of attack on the initial ejection trajectory of air-to-air missile is analyzed by solving fluid dynamics equations and 6DOF equations of rigid body. Referring to American AEDC's captive trajectory system (CTS) testing, in which uses a generic wing/pylon/finned store model, a similar geometric model is established and numerical calculation is carried out. The feasibility of the numerical calculation method is verified by comparing the numerical results and the CTS results in Ref.［29］. Themethod is used to calculate and analyze the initial trajectory of an air-to-air missile launched from a fourth-generation fighter under different angles of attack. The following laws are revealed by the analysis: under supersonic condition, 6DOF motion of missile is apparently influenced by the angle of attack at the initial ejection stage. With the increase in the angle of attack, the pitch motion of missile becomes more intense, the roll angle becomes larger, and the yaw angle becomes smaller. The velocity of missile-separation from aiacraft decreases obviously, and the safety of missile-separation from aiacraft decreases gradually.

Key words

missile / missileseparationfromaiacraft / embeddedbombbay / dynamicmesh / ejectiontrajectory / angleofattack

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ZHANG Bing, HOU Ming, WANG Dianyu, DONG Youliang. Influence of Angle of Attack on Initial Ejection Trajectory of Missile. Acta Armamentarii. 2021, 42(2): 438-448 https://doi.org/10.3969/j.issn.1000-1093.2021.02.021

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