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舰载机着舰的动力学建模

DOI: 10.3969/j.issn.1006??7043.201309033

Keywords: 舰载机, 6自由度运动方程, 基准状态配平, 扰动线性化, 舰尾气流场, 动力学模型??

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Abstract:

为了实现舰载机精确着舰时的飞行控制系统设计,应具备完善的舰载机动力学模型。针对已公开的线性扰动模型较为单一且多数不完整的情况,根据舰载机的性能参数和标准小扰动理论,完成了对其着舰阶段的非线性动力学建模,基准状态配平以及纵向运动的线性化,得到能描述舰载机在平静大气和舰尾气流场下着舰的线性模型。根据舰载机的本体特性综合设置数值仿真条件,验证表明线性模型的精度较高。分析了将气流扰动加入线性模型的方法,通过理论分析和仿真比较得出,舰尾流的水平速度分量对线性模型的精度有很大影响,在扰动线性化的过程中不能忽视。

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