Download or read book Characteristics of Vertical and Lateral Tunnel Turbulence Measured in Air in the Langley Transonic Dynamics Tunnel written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-11-02 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary measurements of the vertical and lateral velocity components of tunnel turbulence were obtained in the Langley Transonic Dynamics Tunnel test section using a constant-temperature anemometer equipped with a hot-film X-probe. For these tests air was the test medium. Test conditions included tunnel velocities ranging from 100 to 500 fps at atmospheric pressure. Standard deviations of turbulence velocities were determined and power spectra were computed. Unconstrained optimization was employed to determine parameter values of a general spectral model of a form similar to that used to describe atmospheric turbulence. These parameters, and others (notably break frequency and integral scale length), were determined at each test condition and compared with those of Dryden and Von Karman atmospheric turbulence spectra. When the data were discovered to be aliased, the spectral model was modified to account for and 'eliminate' the aliasing. Sleeper, Robert K. and Keller, Donald F. and Perry, Boyd, III and Sandford, Maynard C. Langley Research Center...

Download or read book Characteristics of Vertical and Lateral Tunnel Turbulence Measured in Air in the Langley Transonic Dynamics Tunnel written by and published by . This book was released on 1993 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Survey of Primary Flow Measurement Parameters at the NASA Langley Transonic Dynamics Tunnel written by David J. Piatak and published by . This book was released on 2003 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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