Extrapolating component maps into the low speed and simulation of windmilling performance of turbofan engine

This paper has applieded the latest research achievements to model a turbofan engine windmilling performance.Firstly,based on the WR Sexton method,the method and mathematic models of supplementing the sub-idle rotating component characteristics is presented.Secondly,the turbofan windmilling high-low pressure rotor co-working equations and the whole engine co-working equations are established.lastly,a turbofan engine windmilling characteristics under various windmilling conditions are simulated and analyzed.