基于数值模拟的气动载荷计算方法研究

飞机气动载荷的获取一般要根据多项实验结果,经过飞行参数的仿真模拟,实验结果的处理等过程才能获得,而在飞机的初步设计阶段不可能进行大量的实验,但需要计算飞机的载荷和寿命.本文提出了一种利用数值模拟来确定基本气动载荷的方法,对于偏副翼的情况,用工程计算方法获得偏转引起的附加量,加到基本气动载荷上得到偏副翼时的气动载荷,该方法已用于某飞机型号设计.

The research of computational method of aerodynamic load based on nmnerical simulation

If the aerodynamic load of an aircraft can be acquired, flight parameters must be modeled and the results of tests must be dealt with and so on. A lot of tests may not be done in the primary stage of an aircraft design, but the load and lifecycle must be calculated. A method which aerodynamic load is acquired through numerical simulation is put forward, when a rudder is deflected, the additive quantity which a deflected rudder brought can be calculated with a method of engineering evaluation, it is added to base aerodynamic load so that acquire the aerodynamic load of an aircraft when a rudder is deflected. the method has been applied in the design of the aircraft.