弹射过程人椅系统动态质量特性的建模与分析  

Modeling and Analysis of the Dynamic Mass Characteristics of the Pilot-seat System during Ejection Process

作　　者：黄可义 郁嘉[1] 黄守刚 林贵平[1] Huang Keyi;Yu Jia;Huang Shougang;Lin Guiping(Beihang University,Beijing 100191,China;AVIC Aerspace Life-Support Industries,Co.,Ltd.,Xiangyang 441000,China)

机构地区：[1]北京航空航天大学,北京100191 [2]航空工业航宇救生装备有限公司,湖北襄阳441000

出　　处：《航空科学技术》2024年第3期94-102,共9页Aeronautical Science & Technology

基　　金：航空科学基金(20182951013)。

摘　　要：人椅系统的质量特性是弹射座椅轨迹和姿态控制精度的重要影响因素。由于缺乏动态质量特性仿真模型,现阶段采用静态参数设计的弹射座椅控制规律可能在实际应用中出现偏差。本文在弹射座椅六自由度运动模型的基础上,考虑火箭包工作质量变化、人体脊柱压缩、座椅座垫压缩和人体头颈部转动等影响因素,建立了弹射过程人椅系统动态质量特性的计算模型。通过对三个典型工况计算结果的分析,说明了计算模型的合理性;最后分别采用动态、静态质量特性模型对弹射过程轨迹姿态进行仿真,并分析了两模型在救生效果上的差异性。本文建立的模型可以为后续弹射座椅控制规律的精细化设计提供借鉴。The mass characteristics of pilot-seat system is an important factor affecting the trajectory and attitude control accuracy of the ejection seat.Due to the lack of dynamic mass characteristic models,the control law of ejection seat designed with static parameters may cause trajectory and attitude deviation in practical applications.Based on the six degrees of freedom motion model of ejection seat,this paper integrated the effect of weight change of rocket package,compression of the human spine,compression of seat cushion and the head and neck rotation,and further established a calculation model of the dynamic mass characteristics of the pilot-seat system during the ejection process.By analyzing the calculation results of three typical conditions,the rationality of the calculation model was demonstrated.Finally,this paper compared the differences in lifesaving results caused by applying dynamic or static mass characteristics.The model established in this paper can provide reference for the refined design of ejection seat control laws in the future.

关 键 词：弹射座椅 弹射救生 动态质量特性 重心 转动惯量 

分 类 号：V244[航空宇航科学与技术—飞行器设计]