Adaptive-Wall Wind Tunnel

Side vents controlled automatically to compensate for interference by walls. Improved test station for 2- by 2-Foot Adaptive-Wall Wind Tunnel at Ames Research Center equipped for automatic sensing and correction of effects of walls on airflow in vicinity of test model. New facility well suited for advanced research and development. Velocities measured along lines near model used to calculate velocities observed along lines farther from model if model were in free air. Calculated values compared with velocities measured along farther lines.