Wallace-murray Corporation

Gm Global Technolgoy Operations, Inc.

Cheng-Chien Chou

Clifford S Yee

Theodore L Rosebrock

Stephen A Laymon

A gas turbine engine of the two shaft free turbine type has a first gasifier turbine for driving a compressor to supply air to a combustor for combustion with fuel to produce motive fluid for driving the compressor turbine and a second free wheeling power turbine. An air brake with a compressor impeller directly coupled to the power turbine has an inlet and an exhaust and a close coupled iris throttle assembly for regulating the inlet flow of air into the compressor to obtain maximized power turn down ratios without aerodynamic instability.

Iris control for gas turbine engine air brake

A sheet metal fan blade of improved performance and efficiency has a varying camber angle and chord angle along radial positions of the blade, such that the angle of attack along at least 70% of the length of the blade is not less than 2.degree. or more than 10.degree.. The fan blade construction exhibits utility in an automotive radiator cooling system.

Growing community of inventors

Carmel, IN, United States of America

Cheng-Chien Chou