Radial variable inlet guide vane for axial or axi-centrifugal compressors

A turbine engine defining an air flowpath, an axial direction, and a radial direction, the turbine engine comprising:

• a compressor rotatable about the axial direction for pressurizing an airflow;
• an inlet duct in airflow communication with the compressor and positioned upstream of the compressor, the inlet duct defining an inlet portion of the air flowpath, the inlet duct comprising:
• a radial section oriented generally along the radial direction;
• a transition section extending between the radial section and the compressor and configured to direct the airflow from generally along the radial direction to generally along the axial direction;
• and
• a variable inlet guide vane configured to modify the airflow to the compressor, the variable inlet guide vane defining a lengthwise direction extending generally parallel to the axial direction, and wherein the variable inlet guide vane extends in the lengthwise direction at least partially in at least one of the radial section and the transition section of the inlet duct,
• wherein the variable inlet guide vane has a leading edge and a trailing edge, and
• wherein the variable inlet guide vane comprises a retractable member at the trailing edge that is configured to translate between a retracted position and an extended position for modifying the airflow through the inlet duct to the compressor.

A turbine engine defining an air flowpath, an axial direction, and a radial direction, the turbine engine comprising:

• a compressor rotatable about the axial direction for pressurizing an airflow;
• a combustor positioned downstream of the compressor along the air flowpath;
• a turbine positioned downstream of the combustor along the air flowpath;
• an exhaust section positioned downstream of the turbine along the air flowpath;
• an inlet duct in airflow communication with the compressor and positioned upstream of the compressor, the inlet duct defining an inlet portion of the air flowpath and having a forward wall and a rear wall extending along the inlet portion, the inlet portion of the air flowpath oriented generally along the radial direction;
• and
• a variable inlet guide vane assembly having a plurality of vanes disposed circumferentially about a central axis, the central axis being disposed along the axial direction, each vane extending generally along the axial direction from the forward wall to the rear wall of the inlet duct,
• wherein the variable inlet guide vane has a leading edge and a trailing edge, and
• wherein the variable inlet guide vane comprises a retractable member at the trailing edge that is configured to translate between a retracted position and an extended position for modifying the airflow through the inlet duct to the compressor.