摘要
介绍了直升机仿真数学模型的结构及主要功能。对关键部件旋翼数学模型给出了主要计算公式,说明实时仿真的复杂性和困难。分析了实时仿真频率与旋翼推进角步长之间的相互关系,说明实时仿真必须采用较高频率的原因。最后示出了根据结构框图建立的数学模型对某型直升机仿真的部分结果。
This paper presents the diagram of helicopter simulation, then introduces the main function ofeach diagram. In order to show the complexity and difficulty of real simulation, it gives some main equa-tions of rotor's mathematical model, which is a key component in helicopter simulation. This paper alsobriefly analyses the relationship between real simulation frequency and rotor's azimuth advance step-size,which gives the reason for taking higher frequency in real simulation. At last, it gives some simulation re-sults of a helicopter.
