Transonic Flow Quality Improvements in a Blowdown Wind Tunnel

摘要: The development and evaluation of a new type flow conditioning system between the control valve stilling chamber Vought Systems Division 4 X 4-ft transonic-supersonic wind tunnel are reported. results in series normal shocks created by four perforated plates to dissipate total pressure differences reservoir chamber. Data presented which demonstrate quality improvements obtained using design, including significant reduction test section unsteadiness elimination angularity induced at transonic Mach numbers. Design methods developed insure no loss run time numbers minimum losses higher supersonic