Author(s): ZHOU Hong, WANG Zhan-xue, ZHANG Xiao-bo, ZHANG Ming-yang, School of Power and Energy, Northwestern Polytechnical University
Pages: 2160-2166
Year: 2015 Issue:  9
Journal: Journal of Aerospace Power
Keyword:  variable cycle engine; mode transition; geometry regulating law; mode selector valve; core drive fan stage inlet guide vane;
Abstract: The inertial rotor dynamics and volume dynamics of variable cycle engine were considered.The influences of mode selector valve area,core driven fan stage inlet guide vane,low pressure turbine area,nozzle throat area and their different combined adjustments on variable cycle engine mode transition performance were analyzed and compared with the test data.The results indicate that the simulation model established can calculate the characteristic of variable cycle engine mode transition correctly.It is suggested that the core driven fan stage inlet guide vane should been closed/opened when the mode selector valve area is opened/closed during mode transition.The parameters can change more smoothly by adding reasonable regulation of low pressure turbine area and nozzle throat area.