PLASMA ENHANCED RAPIDLY EXPANDED GAS TURBINE ENGINE TRANSITION DUCT

摘要

A plasma enhanced rapidly expanded duct system (11) includes a gas turbine engine inter-turbine transition duct (114) having radially spaced apart conical inn er and outer duct walls (60 and 62) extending axially between a duct inlet (64) and a duc t outlet (66). A conical plasma generator (2) produces a conical plasma (90) along th e outer duct wall (62). An exemplary embodiment of the conical plasma generator (2) is mounted to the outer duct wall (62) and including radially inner and outer electrodes (3, 4) separated by a dielectric material (5). The dielectric material (5) i s disposed within a conical groove (6) in a radially inwardly facing surface (7) of the outer duct wall (62). An AC power supply (100) is connected to the electrodes to supply a high voltage AC potential to the electrodes.