基于扭矩特性的航空发动机起动系统数学模型

Study on Mathematic model of Aeroengine Starting Systems Based on Moment Characteristics

简述了起动过程,分析了起动过程中起动扭矩与发动机扭矩及其负载扭矩特性间的关系,给出了起动机的选择原则,从而建立了基于起动机扭矩及发动机扭矩特性的发动机起动系统数学模型,并给出起动时间的计算方法。最后以典型发动机起动系统作为仿真实例验证了此方法的可行性。

To describe the starting process of aeroengines, analyze the relationship between starting moment and the engine moment characteristics and its loading in the starting process, the mathematic model of aeroengine starting system was developed, and the computing method of time of start was given in this paper. Simulation results show that the given mathematic model for aeroengine starting system is feasible.