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Author :
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)
Download or read book Laser Velocimetry in the Low-speed Wind Tunnels at Ames Research Center written by and published by . This book was released on 1984 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (317 download)
Download or read book Application of Laser Velocimetry to Unsteady Flows in Large Scale High Speed Tunnels written by and published by . This book was released on 1983 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward T. Schairer
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (317 download)
Download or read book Turbulence Measurements in the Boundary Layer of a Low-speed Wind Tunnel Using Laser Velocimetry written by Edward T. Schairer and published by . This book was released on 1980 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722359959
Total Pages : 60 pages
Book Rating : 4.3/5 (599 download)
Download or read book Doppler Global Velocimeter Development for the Large Wind Tunnels at Ames Research Center written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-06 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of an optical, laser-based flow-field measurement technique for large wind tunnels is described. The technique uses laser sheet illumination and charged coupled device detectors to rapidly measure flow-field velocity distributions over large planar regions of the flow. Sample measurements are presented that illustrate the capability of the technique. An analysis of measurement uncertainty, which focuses on the random component of uncertainty, shows that precision uncertainty is not dependent on the measured velocity magnitude. For a single-image measurement, the analysis predicts a precision uncertainty of +/-5 m/s. When multiple images are averaged, this uncertainty is shown to decrease. For an average of 100 images, for example, the analysis shows that a precision uncertainty of +/-0.5 m/s can be expected. Sample applications show that vectors aligned with an orthogonal coordinate system are difficult to measure directly. An algebraic transformation is presented which converts measured vectors to the desired orthogonal components. Uncertainty propagation is then used to show how the uncertainty propagates from the direct measurements to the orthogonal components. For a typical forward-scatter viewing geometry, the propagation analysis predicts precision uncertainties of +/-4, +/-7, and +/-6 m/s, respectively, for the U, V, and W components at 68% confidence. Reinath, Michael S. Ames Research Center...
Author :
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ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (317 download)
Download or read book Prediction of the Flow-field Interference Induced by the Long-range Laser Velocimeter in the Ames 40- by 80-foot and the 80- by 120-foot Wind Tunnels written by and published by . This book was released on 1985 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration NASA
Publisher :
ISBN 13 : 9781729146156
Total Pages : 28 pages
Book Rating : 4.1/5 (461 download)
Download or read book A Three-Dimensional Orthogonal Laser Velocimeter for the NASA Ames 7- by 10-foot Wind Tunnel written by National Aeronautics and Space Administration NASA and published by . This book was released on 2018-10-23 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A three-component dual-beam laser-velocimeter system has been designed, fabricated, and implemented in the 7-by 10-Foot Wind Tunnel at NASA Ames Research Center. The instrument utilizes optical access from both sides and the top of the test section, and is configured for uncoupled orthogonal measurements of the three Cartesian coordinates of velocity. Bragg cell optics are used to provide fringe velocity bias. Modular system design provides great flexibility in the location of sending and receiving optics to adapt to specific experimental requirements. Near-focus Schmidt-Cassegrain optic modules may be positioned for collection of forward or backward scattered light over a large solid angle, and may be clustered to further increase collection solid angle. Multimode fiber optics transmit collected light to the photomultiplier tubes for processing. Counters are used to process the photomultiplier signals and transfer the processed data digitally via buffered interface controller to the host MS-DOS computer. Considerable data reduction and graphical display programming permit on-line control of data acquisition and evaluation of the incoming data. This paper describes this system in detail and presents sample data illustrating the system's capability. Dunagan, Stephen E. and Cooper, Donald L. Ames Research Center RTOP 505-59-54...
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722038151
Total Pages : 28 pages
Book Rating : 4.0/5 (381 download)
Download or read book A Three-Dimensional Orthogonal Laser Velocimeter for the NASA Ames 7- By 10-Foot Wind Tunnel written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-29 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A three-component dual-beam laser-velocimeter system has been designed, fabricated, and implemented in the 7-by 10-Foot Wind Tunnel at NASA Ames Research Center. The instrument utilizes optical access from both sides and the top of the test section, and is configured for uncoupled orthogonal measurements of the three Cartesian coordinates of velocity. Bragg cell optics are used to provide fringe velocity bias. Modular system design provides great flexibility in the location of sending and receiving optics to adapt to specific experimental requirements. Near-focus Schmidt-Cassegrain optic modules may be positioned for collection of forward or backward scattered light over a large solid angle, and may be clustered to further increase collection solid angle. Multimode fiber optics transmit collected light to the photomultiplier tubes for processing. Counters are used to process the photomultiplier signals and transfer the processed data digitally via buffered interface controller to the host MS-DOS computer. Considerable data reduction and graphical display programming permit on-line control of data acquisition and evaluation of the incoming data. This paper describes this system in detail and presents sample data illustrating the system's capability. Dunagan, Stephen E. and Cooper, Donald L. Ames Research Center RTOP 505-59-54...
Author : William W. Hunter
Publisher :
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4.3/5 (243 download)
Download or read book Flow Visualization and Laser Velocimetry for Wind Tunnels written by William W. Hunter and published by . This book was released on 1982 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F. Kevin Owen
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (13 download)
Download or read book Application of Laser Velocimetry to Unsteady Flows in Large Scale High Speed Tunnels written by F. Kevin Owen and published by . This book was released on 1983 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (317 download)
Download or read book A Laser Velocimeter System for Large-scale Aerodynamic Testing written by and published by . This book was released on 1984 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Victor R. Corsiglia
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (31 download)
Download or read book Laser-velocimeter Surveys of Merging Vortices in a Wind Tunnel written by Victor R. Corsiglia and published by . This book was released on 1978 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F. H. Smith
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (224 download)
Download or read book Velocity Measurements in the AEDC Low Speed Wind Tunnel (V/STOL) Using a Laser Doppler Velocimeter written by F. H. Smith and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: An in-house developed laser Doppler velocimeter (LDV) was used to make velocity measurements in a low speed wind tunnel. The installation and instrumentation are discussed, and velocity profiles obtained with the LDV are compared with those obtained using conventional techniques. A discussion on the factors which affect the accuracy of the LDV and improvements that would be desirable are also included. (Author).
Author : George R. Grant
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (317 download)
Download or read book A Laser Velocity Measurement System for High-temperature Wind Tunnels written by George R. Grant and published by . This book was released on 1970 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.:/5 (317 download)
Download or read book V/STOL Wind-tunnel Testing written by and published by . This book was released on 1984 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)
Download or read book Near-wall, Three-dimensional Turbulence Measurements: A Challenge for Laser Velocimetry written by and published by . This book was released on 1989 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (3 download)
Download or read book NASA Tech Briefs written by and published by . This book was released on 1992-05 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (317 download)
Download or read book Ames Research Center Publications: A Continuing Bibliography, 1980 written by and published by . This book was released on 1981 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
