三维机翼的型架外形设计研究

采用三维N－S方程为控制方程，计算机翼所受的气动力与静气动弹性平衡方程耦合求解，在研究机 静气动弹性规律的基础上，对机翼进行型架外形设计，使之在飞行中满足飞机设计气动外形的要求，并以一后掠机翼为算例，计算结果与有关献相吻合。

Analysis of Jig-Shape Design for Elastic Wing

In order to eliminate the influence of static aeroelastics deformation and satisfy the flying characteristic requirement of aircraft, a new approach to the jig-shape elastic wing design problem is presented. The aerodynamic analysis is carried out with solving the 3-dimensional Navier-Stokes equations. On the basis of analysis and coupling with static aeroelastic balancing equation, the jig-shape design of elastic wing is investigated. Throughout the whole optimization process, the accuracy of result is raised because of the numerical simulation of flowing field around the wing with solutions of N-S equations, and the computation time is reduced significantly because the time averaged compressible N-S equations are solved by the implicit LU-NND algorithm. The design of a swept wing is presented as an example to demonstrate the efficacy of the approach, and the results show that it is correct and effective.