二维弹道修正弹修正机构气动特性研究
Research on Aerodynamic Characteristics of Correction Mechanism of Two-dimensional Trajectory Correction Projectile
查看参考文献16篇
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文摘
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二维弹道修正弹气动力特性的研究是求解二维弹道修正弹弹道、分析二维弹道修正弹飞行稳定的基础,是实现精准控制、减小散布必要的理论支撑。该文对二维弹道修正弹的力学特性进行了分析,采用弹翼组合体气动特性工程计算方法,建立二维弹道修正弹气动计算模型,对二维弹道修正弹的升力和阻力进行计算。计算结果与CFD仿真结果对比,误差均小于10%,模型具有较好的可靠性。采用遗传算法,结合二维弹道修正弹气动计算模型,分析了舵偏角和滚转角对二维弹道修正弹升阻比的影响。结果表明,舵偏角越小,全弹的最优升阻比越大,最佳攻角越大,气动能力越好。当攻角大于10°且滚转角为180°时,全弹具有更好的气动能力。 |
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其他语种文摘
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The research on the aerodynamic characteristics of the two-dimensional trajectory correction projectile is the foundation of solving the trajectory of the two-dimensional trajectory correction projectile and analyzing the flight stability of the two-dimensional trajectory correction projectile,and it is the theoretical support to achieve precise control and reduce dispersion. The mechanical characteristics of two-dimensional trajectory correction projectile were analyzed,and the engineering calculation method of the aerodynamic characteristics of the wing assembly was adopted. The aerodynamic calculation model of two-dimensional trajectory correction projectile was established,and the lift force and drag force of two-dimensional trajectory correction projectile were calculated. Comparing the calculated results with the CFD simulation results,the error is less than 10%,and the model has good reliability. Combined with aerodynamic calculation model of two-dimensional trajectory correction projectile,the influence of rudder deflection angle and roll angle on the lift-drag ratio of two-dimensional trajectory correction projectile was analyzed by using genetic algorithm. The results show that the smaller the rudder deflection angle,the greater the optimal lift-to-drag ratio of the whole projectile,the greater the optimal angle of attack,and the better the aerodynamic capability. When the angle of attack is greater than 10° and the roll angle is 180°, the full projectile has better aerodynamic capabilities. |
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来源
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弹道学报
,2021,33(2):34-39 【核心库】
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DOI
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10.12115/j.issn.1004-499X(2021)02-005
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关键词
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二维弹道修正弹
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气动特性
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工程算法
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遗传算法
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地址
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1.
沈阳理工大学装备工程学院, 辽宁, 沈阳, 110159
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辽沈工业集团有限公司, 辽宁, 沈阳, 110045
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1004-499X |
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学科
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武器工业 |
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文献收藏号
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CSCD:7000055
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