Transient Performance Study of a Civil High Bypass Ratio Turbofan Engine

This paper introduced airworthiness requirements on civil aero-engine transient performance and carried out transient performance simulation and analysis of a high bypass ratio turbofan engine which accomplished preliminary design.Different fuel schedules,different polar moments of inertia of LP and HP spools and different customer bleed and power extractions were adopted to investigate their influence on transient performance.Based on simulation results,compressors working line excursions and thermal effects during transient operation were discussed.Finally,a set of calibrated acceleration and deceleration time of the engine are obtained with conclusions of reference [7].