多体分离动力学研究进展  

Multibody separation dynamics:Review

作　　者：宋威[1] 艾邦成[1] SONG Wei;AI Bangcheng(China Academy of Aerospace Aerodynamics,Beijing 100074,China)

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《航空学报》2022年第9期245-265,共21页Acta Aeronautica et Astronautica Sinica

摘　　要：多体分离动力学是航空航天和武器领域的多体飞行器分离系统中经常存在的一类重要运动动力学问题。主要对多体分离动力学研究过程中的存在的关键科学问题、技术难点及研究进展进行总结和论述。首先指出几种典型的多体飞行器(飞机-存储物、多级飞行器、带整流罩飞行器、多弹头飞行器等)分离中的主要关注问题及特点;接着,对多体分离动力学的理论和实验预测方法及其研究进展进行总结,分析了各种研究方法/手段的优缺点和适用性;最后给出了作者的几点思考及未来研究展望。As an important dynamic problem,multibody separation dynamics often exists in the separation system of multibody vehicles in aerospace and weapon fields.Different from multibody system dynamics generally studying the motion law of multiple flexible and rigid bodies connected with each other,multibody separation dynamics is a highly integrated point of aerodynamics and flight dynamics.After unlocking and separation,the multibody vehicles no longer restrain or contact with each other,leading to air medium interaction between the multibody vehicles.The multibody separation process involves both aerodynamic interference(multibody aerodynamics)and relative motion between multiple bodies.This paper summarizes the key scientific problems and related technical difficulties of multibody separation dynamics according to the research requirements of multibody aircraft in the fields of aerospace and weapon systems.Firstly,the problems and main characteristics of several typical multibody vehicles(such as aircraft stores,multistage vehicles,aircraft with fairing,and multimissile vehicles)are presented,followed by a summary of the theoretical and experimental prediction methods of multibody separation dynamics.Then,the advantages and disadvantages of different research methods are analyzed.Finally,some views and future prospects are proposed.

关 键 词：多体飞行器 多体空气动力学 多体分离动力学 网格测量法 六自由度运动方程 

分 类 号：V211.7[航空宇航科学与技术—航空宇航推进理论与工程] V212.1