飞机飞行载荷的简化计算方法研究  

Research on simplified calculation method of aircraft flight load

作　　者：史红伟[1] 薛子涵 罗洋 陈小荣 SHI Hongwei;XUE Zihan;LUO Yang;CHEN Xiaorong(Caihong UAV Technology Co.,Ltd.,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彩虹无人机科技有限公司,北京100074

出　　处：《航空工程进展》2023年第2期160-170,共11页Advances in Aeronautical Science and Engineering

摘　　要：飞行载荷分析是一项复杂而繁重的工作,研究一种适用于方案设计阶段飞行载荷的快速分析方法,对于提高飞行载荷的计算效率具有重要意义。基于小扰动线性分析理论,归纳翼身气动载荷、平尾气动载荷、垂尾气动载荷、舵面铰链力矩的理论计算方法,以及升力面的气动载荷分布、惯性载荷分布、剪力和弯矩的工程计算方法,即飞行载荷的简化计算方法。针对某型单座竞技飞机的飞行载荷,以外形尺寸、质量特性和气动导数作为输入,通过Matlab仿真分析,得到各个部件的气动载荷、惯性载荷、舵面铰链力矩、剪力和弯矩等参数响应。结果表明:该简化方法能够根据较少的输入数据快速求解出各个动力学参数,计算结果可以作为方案设计阶段结构设计的载荷输入。Flight load analysis is a complex and arduous task,and developing a fast analysis method during the conceptual design stage is of great importance to improve the efficiency of flight load calculation.Based on the small disturbance linear analysis theory,the theoretical calculation methods of wing-body aerodynamic load,horizontal tail aerodynamic load,vertical tail aerodynamic load,control surface hinge moment,and the engineering calculation methods of aerodynamic load distribution,inertial load distribution,shear and bending moment of lift surface are summarized.This is a simplified calculation method of flight load.A mathematical model of a certain single seat competitive aircraft is established in the Matlab environment,taking the configuration dimension,mass characteristics and aerodynamic derivative as inputs,the response process of aerodynamic load,inertial load,control surface hinge moment,shear and bending moment are obtained.The results show that the simplified method can quickly get the dynamic parameters with less input data,and the calculation results can be used to satisfy the load requirements of structural design in the conceptual design stage.

关 键 词：飞行载荷 线性化准则 过载系数 铰链力矩 分布载荷 

分 类 号：V212[航空宇航科学与技术—航空宇航推进理论与工程]