筒射串翼无人机展开动力学分析

doi:10.3969/j.issn.1000-1093.2019.01.011

兵工学报 ›› 2019, Vol. 40 ›› Issue (1): 89-98.doi: 10.3969/j.issn.1000-1093.2019.01.011

筒射串翼无人机展开动力学分析

陈方正¹，于剑桥¹, 沈元川¹，马安鹏²

(1.北京理工大学宇航学院, 北京 100081; 2.淮海工业集团有限公司, 山西长治 046012)

收稿日期:2018-05-17 修回日期:2018-05-17 上线日期:2019-03-12
作者简介:陈方正（1990—），男，博士研究生。E-mail：chen_fangzheng@126.com
基金资助:
国家自然科学基金项目（11532002）

Dynamic Analysis of Wing Unfolding of Tube-launched Tandem-wing Unmanned Aerial Vehicle

CHEN Fangzheng¹, YU Jianqiao¹, SHEN Yuanchuan¹, MA Anpeng²

(1.School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081， China;2.Huaihai Industries Group Co., Ltd., Changzhi 046012, Shanxi， China)

Received:2018-05-17 Revised:2018-05-17 Online:2019-03-12

摘要/Abstract

摘要： 对折叠串翼无人机发射展开过程的动力学分析是无人机总体设计和展开机构设计的关键。基于Newton-Euler方法建立描述串翼无人机展开的多刚体动力学模型。基于嵌套动网格方法计算机翼展开过程中的非定常气动特性，并与稳态气动参数进行比较。结合展开过程的气动特性变化和多刚体动力学模型，分析机翼展开速度和展开顺序对发射展开段弹道扰动的影响。仿真结果表明：机翼展开速度过快或者过慢都会对展开段弹道有较大扰动，当展开速度过快时惯性力起主要作用，当展开速度较慢时气动变化起主要作用；同时，前翼先展开、后翼后展开不利于初始发射段弹道的稳定，而前翼后展开、后翼先展开有利于初始发射段弹道的稳定；采用前后机翼同时展开且展开时间为0.20 s的展开方式能够满足尽量减小对弹道的扰动要求。

关键词: 串翼无人机, 嵌套动网格, 多体动力学, 发射扰动, 机翼展开

Abstract: The dynamic analysis of launching and unfolding process of tandem-wing unmanned aerial vehicle is the key to the design of unmanned aerial vehicle and deployment mechanism. A multi-rigid body dynamic model of tandem-wing unmanned aerial vehicle is established based on Newton-Euler method, and the unsteady aerodynamic force in the process of wing unfolding is calculated based on the dynamic overset mesh method. The calculated unsteady aerodynamic parameters are compared with the steady aerodynamic parameters. The influences of wing unfolding speed and sequence on launching trajectory are analyzed on the basis of the aerodynamic changes in the wing unfolding process and the multi-rigid body dynamic model. The result shows that the excessively fast or slow speed of wing unfolding has a great disturbance to the launching trajectory. When the wing unfolding speed is too fast, the effect of inertia force plays a major role on disturbance. When the wing unfolding speed is low, the aerodynamic change shows a greater impact on disturbance. Meanwhile, the firstly unfolding of forward wings is not conducive to the stability of initial launching trajectory, but the firstly unfolding of backward wings has a beneficial effect on the stability of initial launching trajectory. The disturbance to the launch trajectory can be minimized when the forward and backward wings unfold together with the time of 0.20 s. Key

Key words: tandem-wingunmannedaerialvehicle, oversetdynamicmesh, multi-bodydynamics, launchdisturbanceanalysis, wingunfolding

中图分类号:

V279⁺.2

陈方正，于剑桥, 沈元川，马安鹏. 筒射串翼无人机展开动力学分析[J]. 兵工学报, 2019, 40(1): 89-98.

CHEN Fangzheng, YU Jianqiao, SHEN Yuanchuan, MA Anpeng. Dynamic Analysis of Wing Unfolding of Tube-launched Tandem-wing Unmanned Aerial Vehicle[J]. Acta Armamentarii, 2019, 40(1): 89-98.

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筒射串翼无人机展开动力学分析

Dynamic Analysis of Wing Unfolding of Tube-launched Tandem-wing Unmanned Aerial Vehicle

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