直升机飞行动力学数学模型研究特点分析

根据国内外直长机数学模型研究情况，从飞行动力学角分析直升机数学模型的特点。重点讨论了不同研究目的直或机飞行动力学模型的区别，即分别对以非实时数值仿真，实时数值仿真和控制律设计为目的的直升机模型进行分析，阐述其在模型的运动方程数学形式，子模型的复杂性和选取，模型精度以及模型的应用范围等方面的特点，并简要介绍了目前用于直升机飞行动力学特性研究的综合分析软件系统和试验相关性研究。

Characteristics about Mathematical Model of Helicopter Flight Dynamics

The mathematical model of helicopter flight dynamics, which is the research basis of flight mechanics, shows the understanding level for helicopter to a great extent. On the view of flight dynamics, according to the current research situation of helicopter mathematical model at home and abroad, the characteristics about mathematical model of helicopter flight dynamics were discussed in this paper. Differences of research purposes led to difference of mathematical models. To the different research purposes ( for non real time digital simulation, real time digital simulation, and flight control law design), different mathematical formulas of model, choose of sub model, precision of model, and utilizes of model were discussed in detail in this paper. Otherwise, the several abroad synthesis analysis soft systems of helicopter flight dynamics, which were easy used for helicopter design, were introduced. The study of coherence with test was discussed simply here, which was important for helicopter flight dynamics mathematical model to be validated.