Turbulence generation system

A turbulence generation system for use in aerodynamic and acoustic testing of a vehicle comprising:

• a contraction section including a nozzle having a floor and first and second sidewalls, the nozzle defining an air inlet and an air outlet;
• and
• a vane assembly positioned in cooperative relationship with the contraction section to direct airflow from the nozzle, the vane assembly including:
• a plurality of nozzle contraction vane stations located within the nozzle upstream of the air outlet, each nozzle contraction vane station including two vertically oriented nozzle contraction vanes movably connected to a common frame assembly, each nozzle contraction vanes is configured to rotationally move independent of the other nozzle contraction vane to generate airflow pressure loss, turbulence and/or flow vectoring,
• a pair of vertically oriented nozzle exit vanes, the nozzle exit vanes deployable from a stowed condition laterally outward of the respective first and second sidewalls to an extended condition downstream of the air outlet and laterally inward of the respective first and second sidewalls, the nozzle exit vanes configured to rotationally move to generate dynamic yaw, and
• a pair of horizontally oriented vanes positioned downstream of nozzle contraction vanes and upstream of the nozzle exit vanes, the horizontally oriented vanes configured to move in a vertical direction relative to the nozzle floor and configured to rotationally move to generate up-wash or downwash.

A turbulence generation system for use in aerodynamic and acoustic testing of a vehicle comprising:

• a contraction section including a nozzle having a floor and first and second sidewalls, the nozzle defining an air inlet and an air outlet;
• and
• a vane assembly positioned in cooperative relationship with the contraction section to direct airflow from the nozzle, the vane assembly including:
• a plurality of nozzle contraction vane stations located within the nozzle upstream of the air outlet, each nozzle contraction vane station including two vertically oriented nozzle contraction vanes movably connected to a common frame assembly, each nozzle contraction vane is configured to rotationally move independent of the other nozzle contraction vane to generate airflow pressure loss, turbulence and/or flow vectoring, each nozzle contraction vane station is movable between a retracted, stowed condition and an extended, use condition, where in the retracted condition each nozzle contraction vane station is located beneath the nozzle floor,
• a pair of vertically oriented nozzle exit vanes, the nozzle exit vanes deployable from a stowed condition laterally outward of the respective first and second sidewalls to an extended condition downstream of the air outlet and laterally inward of the respective first and second sidewalls, the nozzle exit vanes configured to rotationally move to generate dynamic yaw, and
• a pair of horizontally oriented vanes positioned downstream of nozzle contraction vanes and upstream of the nozzle exit vanes, the horizontally oriented vanes configured to rotationally move to generate up-wash or downwash, wherein the horizontally oriented vanes are operably connected to and supported by laterally spaced vertical supports mounted to the nozzle floor, each vertical support includes a drive mechanism operably connect to the horizontally oriented vanes and configured to vertically move the horizontally oriented vanes relative to the nozzle floor.