Two-dimensional Analysis of Rotor Suction and the Impact on Rotor-stator Interaction Noise PDF Download
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Author: Belva J. Hayden
Publisher:
ISBN:
Category :
Languages : en
Pages : 83
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Author: Belva J. Hayden
Publisher:
ISBN:
Category :
Languages : en
Pages : 83
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Author: Clifford A. Brown
Publisher:
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Category :
Languages : en
Pages :
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Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461303931
Category : Science
Languages : en
Pages : 427
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Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 39 (thesis year 1994) a total of 13,953 thesis titles from 21 Canadian and 159 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 39 reports theses submitted in 1994, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Author: Akil A. Rangwalla
Publisher:
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Category :
Languages : en
Pages :
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781726169813
Category :
Languages : en
Pages : 46
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This report provides a study of rotor and stator scattering using the SOURCE3D Rotor Wake/Stator Interaction Code. SOURCE3D is a quasi-three-dimensional computer program that uses three-dimensional acoustics and two-dimensional cascade load response theory to calculate rotor and stator modal reflection and transmission (scattering) coefficients. SOURCE3D is at the core of the TFaNS (Theoretical Fan Noise Design/Prediction System), developed for NASA, which provides complete fully coupled (inlet, rotor, stator, exit) noise solutions for turbofan engines. The reason for studying scattering is that we must first understand the behavior of the individual scattering coefficients provided by SOURCE3D, before eventually understanding the more complicated predictions from TFaNS. To study scattering, we have derived a large number of scattering curves for vane and blade rows. The curves are plots of output wave power divided by input wave power (in dB units) versus vane/blade ratio. Some of these plots are shown in this report. All of the plots are provided in a separate volume. To assist in understanding the plots, formulas have been derived for special vane/blade ratios for which wavefronts are either parallel or normal to rotor or stator chords. From the plots, we have found that, for the most part, there was strong transmission and weak reflection over most of the vane/blade ratio range for the stator. For the rotor, there was little transmission loss.Meyer, Harold D.Glenn Research CenterACOUSTIC SCATTERING; AERODYNAMIC NOISE; NOISE PREDICTION; TURBOFANS; TURBOFAN ENGINES; ROTOR BLADES (TURBOMACHINERY); STATOR BLADES; CASCADE FLOW; VANES; SCATTERING COEFFICIENTS; COMPUTER PROGRAMS; THREE DIMENSIONAL MODELS; COMPUTERIZED SIMULATION; TRANSMITTANCE; REFLECTANCE; TRANSMISSION LOSS...
Author:
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Category : Aeronautics
Languages : en
Pages : 310
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Author: O. Nozaki
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Category :
Languages : en
Pages :
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Author: S. Sawyer
Publisher:
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Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
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Author:
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ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 876
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