Patent ID: 8764381
Filing Date: 2014-07-01
Classification: F01D,F02C,F02K,F05D,Y02T

Abstract:
1. A propulsion system comprising: a first spinner section; a first row of propeller blades mounted to said first spinner section to rotate about an axis; an annular cooling flow nozzle extending about said axis, said annular cooling flow nozzle upstream of said first row of propeller blades; an annular exhaust nozzle extending about said axis radially outboard of said annular cooling flow nozzle, said annular exhaust nozzle upstream of said first row of propeller blades; and an engine nacelle positioned radially outboard relative to said first spinner section, and wherein said annular cooling flow nozzle and said annular exhaust nozzle are located radially between said engine nacelle and said first spinner section.