Patent ID: 6457305
Filing Date: 2002-10-01
Classification: F01D,F02C,F02K,F05D

Abstract:
A turbo shaft engine for amplifying the flow rate of an air stream, comprising:a primary air duct having upstream and downstream ends, said upstream end defining an air intake for receiving an intake flow having a flow rate associated therewith and said downstream end defining an outlet port; a primary combustion chamber connected to said primary air duct and adapted to receive a portion of said intake flow, said primary combustion chamber adapted to ignite an admixture of fuel and said intake flow portion so as to form an energized motive flow; a primary inlet passage coupled to said primary air duct and positioned to connect said primary air duct with said primary combustion chamber, said primary inlet passage adapted to receive said intake flow portion; means positioned between said primary air duct and said primary inlet passage for reversing the flow direction of said intake flow portion; a plurality of ejector nozzles coupled to said primary combustion chamber for discharging said motive flow into said air intake of said primary air duct so as to amplify said flow rate of said intake flow by momentum transfer; and a turbine fan assembly coupled to said outlet port and having a hub with a plurality of blades radially mounted for rotation thereabout, said blades adapted to be rotated by said motive flow flowing through said outlet port.