Sidewall Mach Number Distributions for the NASA Langley Transonic Dynamics Tunnel

Download or read book Sidewall Mach Number Distributions for the NASA Langley Transonic Dynamics Tunnel written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-11 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Transonic Dynamics Tunnel(TDT) was recalibrated due to the conversion of the heavy gas test medium from R-12 to R-134a. The objectives of the tests were to determine the relationship between the free-stream Mach number and the measured test section Mach number, and to quantify any necessary corrections. Other tests included the measurement of pressure distributions along the test-section walls, test-section centerline, at certain tunnel stations via a rake apparatus, and in the tunnel settling chamber. Wall boundary layer, turbulence, and flow angularity measurements were also performed. This paper discusses the determination of sidewall Mach number distributions.Florance, James R. and Rivera, Jose A., Jr.Langley Research CenterTRANSONIC WIND TUNNELS; CALIBRATING; FLOW MEASUREMENT; PRESSURE MEASUREMENT; TURBULENT FLOW; TEST CHAMBERS; PRESSURE DISTRIBUTION; MACH NUMBER; FREE FLOW