中文说明：本文将介绍如何构建一个表示一般的纵向直升机飞行动力学基本数学模型的详细过程。该过程将使用由小微扰理论线性的平移和旋转动力和运动的旋转运动学方程开始。还有，为了作出的某些假设的简化。下一步是构造基本线性的形式来描述的稳定性和直升机的周围修剪状态的小的运动的响应。为了模拟的结果，从现有的直升机基本输入数据将被使用。最后一个步骤是将模拟利用MATLAB的Simulink程序的结果。
English Description：
This paper will present detailed procedure of how to construct a basic mathematical model that represents general longitudinal helicopter flight dynamics. The procedure will start from linearizing the translational and rotational dynamics and rotational kinematics equations of motion using the small perturbation theory. There are certain assumptions made for the sake of simplifications. The next step is to construct the fundamental linearized form for describing the stability and response of a small motion of a helicopter around a trim condition. In order to simulate the results, basic input data from an existing helicopter will be used. The last step is will be simulating the results using MATLAB Simulink program.