Turbofan Engine Starting Performance Simulation

It's very important in a flight mission to start the air-engine quickly and successfully and it requires us to research the problem deeply. This paper build up a new model of turbofan engine's starting process, Our main work of this paper are introduced below. We established the fan , compressor and turbine's components' characteristics . We established the high pressure turbine and low pressure turbine's flux characteristics of low speed. Considering the low-speed rotor's following characteristics in the starting process, we modify the model of turbofan engine's acceleration process which is based on the components' characteristics and time-advancing method and build up a new model of turbofan engine's starting process. In the end, we simulate a turbofan engine's starting process with the new starting process model and the new model gives reasonable results. The new starting model can be applied to other turbofan engine's starting processes' numerical simulation and design.