摘要
民用飞机的机翼设计都是以巡航性能作为设计点。由于飞机静气动弹性效应,大展弦比后掠机翼飞机巡航飞行时,机翼的气动特性会因机翼产生静变形而改变。为使飞机巡航飞行时机翼巡航性能达到设计指标,需要对机翼进行型架设计。本文中提出一种机翼型架外形的设计方法,首先应用气动力修正技术,对计算效率高但精度不足的偶极子格网法进行修正,采用完全解耦方法获得机翼初始型架外形,再通过耦合的迭代计算收敛到目标机翼型架外形,使其巡航状态飞行性能达到设计值。此方法不仅收敛速度快,而且其结果具有较高精度。
Cruise performance is the design point in civil aircraft wing design.The wing′s aerodynamic characteristics changes due to its static deformation because of the aircraft static aeroelastic effects when it is in cruise condition.It is important to do research on wing jig-shape design to make the aircraft′s cruise performance meet its design criterion.A fast approach to the wing jig-shape aeroelastic design problem was presented in this paper.At first,aerodynamic correction factor techniques was applied to doublet-lattice method and acquired a good computational efficiency for improving the accuracy of aerodynamic force.The initial jig-shape of the wing was obtained through a fully decoupled method,and the designed jig-shape was got by coupling iterative calculation.This approach not only convergences fast,but also gets results with high accuracy.
出处
《机械科学与技术》
CSCD
北大核心
2012年第12期1893-1897,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(11072198
11102162)
高等学校学科创新引智计划项目(B07050)资助
