High area-ratio inter-turbine duct with inlet blowing

Details High area-ratio inter-turbine duct with inlet blowing High area-ratio inter-turbine duct with inlet blowing

2006-11-21

2006-11-21

Kim, Ted (Department: 3746)

Power plants

Reaction motor

Air passage bypasses combustion chamber

C060S039162, C060S039500, C415S143000, C415S144000

Reexamination Certificate

active

07137245

ABSTRACT:
A bypass channel for use in an inter-turbine transition duct of a gas turbine engine is connected to a suction port disposed upstream of a high-pressure turbine and an injection port disposed downstream of the high-pressure turbine. The flow through the bypass channel is motivated by the natural pressure difference across the high-pressure turbine. The flow out of the injection nozzle is used to energize the boundary layer flow downstream of the high-pressure turbine in order to allow for the use of a more aggressively expanded inter-turbine duct without boundary layer separation.

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“Flow Control Opportunities in Gas Turbine Engines”, by W.K. Lord et al, Conference Proceedings, American Institute of Aeronautics and Astronautics, Jun. 19-22, 2000/Denver, CO, pp. 1-15.
EP Search Report, EP 05 25 3724, Sep. 13, 2005.

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