Methods and apparatus for controlling flow fields

An actuator assembly for controlling a flow field over a surface comprising:

• an oscillator, said oscillator positioned to oscillate a body;
• a motor powering said oscillator;
• an oscillating body driven by said oscillator at least one of vertically, horizontally, and rotationally to oscillate relative to said surface at a predetermined frequency, said oscillating body including a fluid jet outlet;
• and
• a fluid jet source in fluid communication with said fluid jet outlet;
• wherein said fluid jet outlet is shaped to emit a fluid jet to said flow field at a predetermined flow path and predetermined flow velocity.

An actuator assembly for controlling a flow field over a surface comprising:

• an oscillator, said oscillator positioned to oscillate a body;
• a motor powering said oscillator;
• an array of oscillating bodies driven by said oscillator to oscillate relative to said surface at a predetermined frequency, said oscillating bodies further comprising a wall, an interior cavity, and a fluid jet outlet positioned on said wall;
• a fluid jet source in fluid communication with said fluid jet outlet, said fluid jet source is a compressed fluid, a synthetic jet generator, an external flow stream, or a combination thereof;
• and
• wherein said fluid jet outlet is positioned to direct a fluid jet at predetermined intervals during body oscillation at an angle between about 0 degrees to about 45 degrees relative to at least one of said flow field and said surface.