Methods and apparatus for reducing flow distortion at engine fans of nacelles

An apparatus for reducing flow distortion at an engine fan of a nacelle, the apparatus comprising:

• a plurality of nozzles radially spaced about an inner wall of the nacelle, respective ones of the plurality of nozzles positioned to eject corresponding respective jets of fluid adjacent the inner wall in a downstream direction toward the engine fan;
• a valve operatively positioned to selectively enable fluid communication between a pressurized fluid source and the plurality of nozzles;
• a disk operatively positioned to rotate around the inner wall to selectively align an orifice of the disk with the respective ones of the plurality of nozzles;
• and
• a controller operatively coupled to the valve and to the disk, the controller configured to:
• actuate the valve to provide pressurized fluid from the pressurized fluid source to the plurality of nozzles;
• and
• rotate the disk around the inner wall to selectively align the orifice with the respective ones of the plurality of nozzles according to a time-based sequence, the time-based sequence corresponding to a directional sequence that moves in an arcuate direction along a circumference of the inner wall, wherein a first one of the plurality of nozzles is to eject a first jet of fluid when the orifice is aligned with the first one of the plurality of nozzles and the valve is actuated to provide the pressurized fluid to the plurality of nozzles.