Patent ID: 8667775

Claim:
A ducted fan comprising: a reverse flow turbine engine core; a fan blisk driven by the engine core, the fan blisk incorporating a set of thrust fan blades extending from an outer hub; a set of integral secondary flow blades extending intermediate an inner hub and the outer hub; a nacelle providing an outer flow duct for the thrust fan blades; and, a gear case shroud having an inlet concentric with the outer hub carrying flow from the integral secondary flow blades; a flange in the inner hub, said flange and gear case shroud forming a plenum for secondary air for cooling of components of the reverse flow turbine engine core; an air diffuser extending from the gear case shroud wherein at least a portion of said secondary air flows over an outer profile of the engine core, and, a tail cone having inlets positioned to receive exit flow from the diffuser to provide inlet combustion air for the reverse flow turbine engine.