Wind tunnel test sections are designed in several configurations to meet specific requirements. In each case the test section will use specialized equipment to control flow
conditions. Typical test sections include Solid Wall, Slotted Wall, or Open Jet and they often use additional systems such as Plenum Evacuation, Re-Entry, Moving Ground Planes, or Boundary Layer Suction to manage the interaction of
the flow with the test section boundary layer. ASE has provided equipment or designs for each of these concepts .
ASE has developed a new concept for design of Open Jet test sections to address the problem of resonance of the airflow at that can occur at specific test speeds. This
phenomenon has caused problems with testing in a number of major wind tunnels. By using a slanted collector at the downstream end of the test section, the resonances can be eliminated. A slanted collector can be supplied with a
new Open Jet test section to prevent resonance problems or retrofit in an existing wind tunnel to solve a resonance problem.
A United States Patent is pending for this unique ASE design. For more information, purchase SAE Paper 2002-01-0251 from the Society of Automotive Engineers or contact the author at jlacey@aerosysengr.com.
