Plasma flow control inlet particle separator system

A gas turbine engine, comprising:

• a compressor section, a combustion section, and turbine section disposed in flow series, the compressor section having an air inlet;
• and
• an inlet particle separator system coupled to, and disposed upstream of, the compressor section, the inlet particle separator system, comprising:
• a hub section;
• a shroud section surrounding at least a portion of the hub section and spaced apart therefrom to define a passageway, the passageway having an air inlet;
• a splitter disposed downstream of the air inlet and extending into the passageway to divide the passageway into a scavenge flow path and an engine flow path;
• and
• a plasma flow control actuator coupled to the hub section and disposed between the air inlet and the splitter.

An inlet particle separator system for an engine having an engine centerline, comprising:

• a hub section;
• a shroud section surrounding at least a portion of the hub section and spaced apart therefrom to define a passageway, the passageway having an air inlet and a cross sectional flow area;
• a splitter disposed downstream of the air inlet and extending into the passageway to divide the passageway into a scavenge flow path and an engine flow path;
• and
• a plasma flow control actuator coupled to the hub section and disposed between the air inlet and the splitter,
• wherein:
• the hub section is configured to be symmetrically disposed about the engine centerline, and includes an inlet portion, an outlet portion, and a transition portion disposed between the inlet and outlet portions,
• the inlet portion is defined by a first surface having a first maximum angle at a first point, the first maximum angle relative to the engine centerline,
• the outlet portion is defined by a second surface having a second maximum angle at a second point, the second maximum angle relative to the engine centerline,
• the transition portion is defined by a third surface having a curvature that defines a hub turning angle, the hub turning angle defined as a symmetric arc that subtends a first line and a second line,
• the first line is a line that extends through the first point at the first maximum angle,
• the second line is a line that extends through the second point at the second maximum angle,
• the first maximum angle is greater than 30-degrees,
• the symmetric arc is greater than 280-degrees, and
• the plasma flow control actuator is disposed on the transition portion.