Research on the Starting Characteristics and Control Law of Two Spool Turbofan Engine

Abstract A rapid and convince component characteristics extrapolation method and starting control law design method were presented in the paper. The component characteristics extrapolation method based on the relationship between flow coefficient and adiabatic pressure head coefficient in low speed region was researched, and the starting process control law of some two-spool turbofan was designed using the Virtual Power Extraction Method (VPEM). The starting characteristics was researched in both steady-state and dynamic-state models, the starting process simulation result was quick and safe, and the validity of the extrapolation method and VPEM were proved.