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兵工学报 ›› 2022, Vol. 43 ›› Issue (10): 2588-2597.doi: 10.12382/bgxb.2021.0538

• 论文 • 上一篇    

跨介质飞行器头部外形优化及入水性能分析

马文朝1, 孟繁敏1, 马诺1, 孟军辉1,2, 邹汝平3   

  1. (1.北京理工大学 宇航学院, 北京 100081; 2.飞行器动力学与控制教育部重点试验室, 北京 100081;3.中国兵器工业集团公司 西安现代控制技术研究所, 陕西 西安 710003)
  • 上线日期:2022-06-03
  • 通讯作者: 孟军辉(1988—),男,副研究员 E-mail:meng_junhui@163.com
  • 作者简介:马文朝(1998—), 男, 硕士研究生。 E-mail: mawenchao0515@163.com
  • 基金资助:
    国家自然科学基金项目(11902029); 北京理工大学研究生科研水平和创新能力提升专项计划项目(2022YCXZ017)

Head Shape Optimization and Water Entry Performance Analysis of Trans-medium Aircraft

MA Wenchao1, MENG Fanmin1, MA Nuo1, MENG Junhui1, 2, ZOU Ruping3   

  1. (1.School of Astronautics, Beijing Institute of Technology, Beijing, 100081, China; 2.Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, Beijing 100081, China; 3.Xi'an Institute of Modern Control, China North Industries Group Corporation Limited, Xi'an 710003, Shaanxi, China)
  • Online:2022-06-03

摘要: 跨介质飞行器头部外形是影响跨介质过程中运动学特性的重要因素之一。通过采用常见的双参数立方多项式曲线方程,获取跨介质飞行器头部外形曲线无量纲参数,采用任意拉格朗日-欧 拉方法完成不同头部外形跨介质飞行器的流固耦合建模及性能分析,研究不同头部外形入水后末速度与入水过程中所受最大冲击应力。以最大末速度和最小冲击应力为优化目标,在保证有限元仿真精度的同时,通过径向基神经网络提升计算效率,并利用多岛遗传算法对跨介质飞行器头部外形进行多目标优化,以得到最佳的头部外形。研究结果表明,跨介质飞行器最优头部外形相对于基本外形,入水过程速度衰减量与所受冲击应力明显降低,有效地减少入水过程中跨介质飞行器的能量损失,可为跨介质飞行器的头部外形设计提供参考。

关键词: 跨介质飞行器, 流固耦合, 头部外形优化设计, 入水性能分析

Abstract: The head shape of a trans-medium aircraft is one of the important factors affecting the kinematics in the trans-medium process. The common two-parameter cubic polynomial curve is used to obtain the shape curve dimensionless parameters of the trans-medium aircraft head shape. The Arbitrary Lagrangian-Eulerian method is adopted to complete the fluid-structure coupling modeling and performance analysis for trans-medium aircraft with different head shapes, and investigate the terminal velocity of different head shapes after entering the water and the maximum impact stress received during the water entry process. Taking the maximum terminal velocity and the minimum impact stress as the optimization goals, multi-objective optimization is carried out on the head shape of the trans-medium aircraft, and an optimal head shape is obtained. The results show that the optimal head shape of the trans-medium aircraft has significantly reduced speed attenuation and impact stress compared with the basic shape, the optimal head shape of the trans-medium aircraft effectively reduces the energy loss of the aircraft in the water-entry process. It can provide insights into the head shape design of the trans-medium aircraft.

Key words: trans-mediumaircraft, fluid-structurecoupling, optimizationdesignofheadshape, waterentryperformanceanalysis

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