复材机翼气弹特性工程化设计分析技术

Engineering design and analysis technique of aeroelastic characteristics of composite wing

本文在静气弹的基本原理分析基础上,发展了机翼气弹特性工程化设计方法:基于参数化的机翼气动弹性模型,研究了复合材料机翼整体蒙皮重要设计参数对舵效、静变形和静强度的影响,采用变参分析方法进行了灵敏度分析,获取影响舵效的关键参数变化趋势,用以指导舵效气动弹性剪裁优化设计。对优化设计结果进行了工程化的处理并进行校核,获得了工程可用的蒙皮铺层设计方案,在改善舵效使其满足飞机性能要求的同时,还获得了满意的减重105kg(总质量的14%)效益。

Based on the fundamental principal analysis of static aeroelastics,the paper develops the engineering design method for wing aeroelastic characteristics.On the basis of parameterized aeroelastic model,the impacts of important parameters of composite wing integral skin on rudder effectiveness,static deformation,and static strength are studied.Using the variational analytical method,a sensitivity analysis is carried out to obtain the trends of those critical parameters affecting the rudder effectiveness,which can guide the aeroelastic tailoring optimal design of the rudder effectiveness.Furthermore,the optimized design results are treated to satisfy the engineering requirement and are verified,obtaining the engineering applicable skin ply scheme.The proposed design not only optimizes the rudder effectiveness to fulfill the aircraft performance requirement,but also helps the composite skin of a certain type of aircraft to gain a satisfactory weight reduction of105 kg(14% of the total weight).