跨介质飞行器近水面滑跳流固耦合仿真及可滑跳区域研究  

Water-skipping fluid-structure interaction simulation and slippable area study of trans-medium vehicle

作　　者：罗剑桥 解春雷 金泽华 孟军辉 LUO Jianqiao;XIE Chunlei;JIN Zehua;MENG Junhui(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;China Academy of Aerospace Science and Innovation,Beijing 100176,China;Beijing Institute of Technology Chongqing Innovation Center,Chongqing 401120,China)

机构地区：[1]北京理工大学宇航学院,北京100081 [2]中国航天科技创新研究院,北京100176 [3]北京理工大学重庆创新中心,重庆401120

出　　处：《航空学报》2023年第21期377-394,共18页Acta Aeronautica et Astronautica Sinica

基　　金：北京理工大学科技创新计划项目(2021CX01018)。

摘　　要：近水面滑跳是一种包含触水离水过程的掠水飞行方式,将其应用于新型跨介质飞行器的设计,可有效提升飞行器反舰攻击突防能力和自身生存能力。由于运动体近水面滑跳涉及速度和姿态角等多种运动参数,运动机理复杂,对于全尺寸复杂外形的跨介质飞行器,利用有限元仿真和飞行试验分析获取不同初始运动参数对近水面滑跳的影响规律,需要研究的工况众多,工作量较大。为了能够将简单缩比尺寸平板运动体应用于近水面滑跳仿真分析和试验设计中,对流体相似原理在近水面滑跳运动特性上的可预测性进行了验证。分别基于任意拉格朗日-欧拉描述的流固耦合方法和简单二元平板滑行理论,研究了复杂跨介质飞行器和简单平板运动体近水面滑跳运动特性,分析确定了2种运动体包含多个影响参数的可滑跳区域,并进一步基于相似原理探究了两者的关系。结果表明:所提出的跨介质飞行器的可滑跳区域分布与初始速度倾角几乎无关,可滑跳区域随初始速度增大而扩大,并最终趋于稳定;简单平板模型可用于模型试验和仿真分析,通过相似原理对复杂跨介质飞行器的可滑跳区域进行反推估计,能够为跨介质飞行器初步设计阶段的工程求解提供新思路。Water-skipping is a kind of water skimming flight mode which includes the process of touching and leaving water surface,and its application to the design of a new trans-medium vehicle can effectively improve the anti-ship penetration capability of flight vehicle and its own survival capability.Because the water-skipping of moving body in⁃volves a variety of kinematic parameters such as velocity and attitude angle,the kinematic mechanism is complex.For a full-size trans-medium vehicle with complex shape,it needs to study a large number of working conditions to obtain the effects of initial value of different kinematic parameters on the water-skipping process by finite element simulation and flight test analysis,thus the workload is very heavy.To apply a simple scaled-down plate moving body to the water-skipping simulation analysis and experimental design,the predictability of the fluid similarity principle on the kine⁃matic characteristics of the water-skipping process is verified.Based on the fluid-structure interaction method described by arbitrary Lagrange-Euler and the gliding theory of simple two-dimensional plate,the water-skipping kinematic char⁃acteristics of the complex trans-medium vehicle and the simple plate moving body are investigated,respectively,the skippable area of the two moving bodies,which contain multiple influence parameters,is analyzed and determined,and the relationship between them is further explored based on the similarity principle.The results show that the skip⁃pable area distribution of the proposed trans-medium vehicle is almost independent of the initial flight path angle,and the skippable area expands with the increase of the initial velocity and eventually stabilizes;the simple plate model can be used for model test and simulation analysis,and new ideas for engineering solution in the preliminary design phase of a trans-medium vehicle can be provided by using similarity principle to inversely estimate the skippable area of the complex trans-medium vehicle.

关 键 词：跨介质飞行器 近水面滑跳 可滑跳区域 流固耦合 相似原理 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]