Design of a Low Speed Fan Stage for Noise Suppression

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721973460
Total Pages : 560 pages
Book Rating : 4.9/5 (734 download)

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Book Synopsis Design of a Low Speed Fan Stage for Noise Suppression by : National Aeronautics and Space Administration (NASA)

Download or read book Design of a Low Speed Fan Stage for Noise Suppression written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-27 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the design of a low tip speed, moderate pressure rise fan stage for demonstration of noise reduction concepts. The fan rotor is a fixed-pitch configuration delivering a design pressure ratio of 1.378 at a specific flow of 43.1 lbm/sec/sq ft. Four exit stator configurations were provided to demonstrate the effectiveness of circumferential and axial sweep in reducing rotor-stator interaction tone noise. The fan stage design was combined with an axisymmetric inlet, conical convergent nozzle, and nacelle to form a powered fan-nacelle subscale model. This model has a 22-inch cylindrical flow path and employs a rotor with a 0.30 hub-to-tip radius ratio. The design is fully compatible with an existing NASA force balance and rig drive system. The stage aerodynamic and structural design is described in detail. Three-dimensional (3-D) computational fluid dynamics (CFD) tools were used to define optimum airfoil sections for both the rotor and stators. A fan noise predictive system developed by Pratt & Whitney under contract to NASA was used to determine the acoustic characteristics of the various stator configurations. Parameters varied included rotor-to-stator spacing and vane leading edge sweep. The structural analysis of the rotor and stator are described herein. An integral blade and disk configuration was selected for the rotor. Analysis confirmed adequate low cycle fatigue life, vibratory endurance strength, and aeroelastic suitability. A unique load carrying stator arrangement was selected to minimize generation of tonal noise due to sources other than rotor-stator interaction. Analysis of all static structural components demonstrated adequate strength, fatigue life, and vibratory characteristics. Dalton, W. N. and Elliot, D. B. and Nickols, K. L. Glenn Research Center NAS3-25950; RTOP 538-03-11...

Design of a Low Speed Fan Stage for Noise Suppression

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Publisher :
ISBN 13 :
Total Pages : 564 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Design of a Low Speed Fan Stage for Noise Suppression by :

Download or read book Design of a Low Speed Fan Stage for Noise Suppression written by and published by . This book was released on 1999 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

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Publisher :
ISBN 13 :
Total Pages : 556 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fan Noise Reduction: An Overview

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ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Fan Noise Reduction: An Overview by : Edmane Envia

Download or read book Fan Noise Reduction: An Overview written by Edmane Envia and published by . This book was released on 2001 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Low Noise Research Fan Stage Design

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ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Low Noise Research Fan Stage Design by :

Download or read book Low Noise Research Fan Stage Design written by and published by . This book was released on 1995 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Low-Noise Research Fan Stage Design

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ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Advanced Low-Noise Research Fan Stage Design by :

Download or read book Advanced Low-Noise Research Fan Stage Design written by and published by . This book was released on 1997 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Low-speed Aerodynamic Performance of 50.8-centimeter-diameter Noise-suppressing Inlets for the Quiet, Clean, Short-haul Experimental Engine (QCSEE)

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Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Low-speed Aerodynamic Performance of 50.8-centimeter-diameter Noise-suppressing Inlets for the Quiet, Clean, Short-haul Experimental Engine (QCSEE) by :

Download or read book Low-speed Aerodynamic Performance of 50.8-centimeter-diameter Noise-suppressing Inlets for the Quiet, Clean, Short-haul Experimental Engine (QCSEE) written by and published by . This book was released on 1978 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Congressional Record

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ISBN 13 :
Total Pages : 1436 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Congressional Record by : United States. Congress

Download or read book Congressional Record written by United States. Congress and published by . This book was released on 1967 with total page 1436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Congressional Record is the official record of the proceedings and debates of the United States Congress. It is published daily when Congress is in session. The Congressional Record began publication in 1873. Debates for sessions prior to 1873 are recorded in The Debates and Proceedings in the Congress of the United States (1789-1824), the Register of Debates in Congress (1824-1837), and the Congressional Globe (1833-1873)

NASA Technical Paper

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ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis NASA Technical Paper by :

Download or read book NASA Technical Paper written by and published by . This book was released on 1980 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Technology for a Quieter America

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Publisher : National Academies Press
ISBN 13 : 0309156327
Total Pages : 210 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Technology for a Quieter America by : National Academy of Engineering

Download or read book Technology for a Quieter America written by National Academy of Engineering and published by National Academies Press. This book was released on 2010-10-30 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exposure to noise at home, at work, while traveling, and during leisure activities is a fact of life for all Americans. At times noise can be loud enough to damage hearing, and at lower levels it can disrupt normal living, affect sleep patterns, affect our ability to concentrate at work, interfere with outdoor recreational activities, and, in some cases, interfere with communications and even cause accidents. Clearly, exposure to excessive noise can affect our quality of life. As the population of the United States and, indeed, the world increases and developing countries become more industrialized, problems of noise are likely to become more pervasive and lower the quality of life for everyone. Efforts to manage noise exposures, to design quieter buildings, products, equipment, and transportation vehicles, and to provide a regulatory environment that facilitates adequate, cost-effective, sustainable noise controls require our immediate attention. Technology for a Quieter America looks at the most commonly identified sources of noise, how they are characterized, and efforts that have been made to reduce noise emissions and experiences. The book also reviews the standards and regulations that govern noise levels and the federal, state, and local agencies that regulate noise for the benefit, safety, and wellness of society at large. In addition, it presents the cost-benefit trade-offs between efforts to mitigate noise and the improvements they achieve, information sources available to the public on the dimensions of noise problems and their mitigation, and the need to educate professionals who can deal with these issues. Noise emissions are an issue in industry, in communities, in buildings, and during leisure activities. As such, Technology for a Quieter America will appeal to a wide range of stakeholders: the engineering community; the public; government at the federal, state, and local levels; private industry; labor unions; and nonprofit organizations. Implementation of the recommendations in Technology for a Quieter America will result in reduction of the noise levels to which Americans are exposed and will improve the ability of American industry to compete in world markets paying increasing attention to the noise emissions of products.

NASA Technical Memorandum

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Publisher :
ISBN 13 :
Total Pages : 384 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis NASA Technical Memorandum by :

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1979 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bibliography of Lewis Research Center Technical Publications Announced in 1977

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ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Bibliography of Lewis Research Center Technical Publications Announced in 1977 by : Lewis Research Center

Download or read book Bibliography of Lewis Research Center Technical Publications Announced in 1977 written by Lewis Research Center and published by . This book was released on 1978 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation of abstracts describes and indexes over 780 technical reports resulting from the scientific and engineering work performed and managed by the Lewis Research Center in 1977. All the publications were announced in the 1977 issues of STAR (Scientific and Technical Aerospace Reports) and/or IAA (International Aerospace Abstracts). Documents cited include research reports, journal articles, conference presentations, patents and patent applications, and theses.

Federal Aircraft Noise Abatement Plan

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ISBN 13 :
Total Pages : 338 pages
Book Rating : 4.:/5 (41 download)

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Book Synopsis Federal Aircraft Noise Abatement Plan by :

Download or read book Federal Aircraft Noise Abatement Plan written by and published by . This book was released on 1969 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Monthly Catalog of United States Government Publications

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Monthly Catalog of United States Government Publications by :

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Noise of fan designed to reduce stator lift fluctuations

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Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Noise of fan designed to reduce stator lift fluctuations by : James H. Dittmar

Download or read book Noise of fan designed to reduce stator lift fluctuations written by James H. Dittmar and published by . This book was released on 1977 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Clean Energy Systems, 6 Volume Set

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Publisher : John Wiley & Sons
ISBN 13 : 1118388585
Total Pages : 4038 pages
Book Rating : 4.1/5 (183 download)

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Book Synopsis Handbook of Clean Energy Systems, 6 Volume Set by : Jinyue Yan

Download or read book Handbook of Clean Energy Systems, 6 Volume Set written by Jinyue Yan and published by John Wiley & Sons. This book was released on 2015-06-22 with total page 4038 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Clean Energy Systems brings together an international team of experts to present a comprehensive overview of the latest research, developments and practical applications throughout all areas of clean energy systems. Consolidating information which is currently scattered across a wide variety of literature sources, the handbook covers a broad range of topics in this interdisciplinary research field including both fossil and renewable energy systems. The development of intelligent energy systems for efficient energy processes and mitigation technologies for the reduction of environmental pollutants is explored in depth, and environmental, social and economic impacts are also addressed. Topics covered include: Volume 1 - Renewable Energy: Biomass resources and biofuel production; Bioenergy Utilization; Solar Energy; Wind Energy; Geothermal Energy; Tidal Energy. Volume 2 - Clean Energy Conversion Technologies: Steam/Vapor Power Generation; Gas Turbines Power Generation; Reciprocating Engines; Fuel Cells; Cogeneration and Polygeneration. Volume 3 - Mitigation Technologies: Carbon Capture; Negative Emissions System; Carbon Transportation; Carbon Storage; Emission Mitigation Technologies; Efficiency Improvements and Waste Management; Waste to Energy. Volume 4 - Intelligent Energy Systems: Future Electricity Markets; Diagnostic and Control of Energy Systems; New Electric Transmission Systems; Smart Grid and Modern Electrical Systems; Energy Efficiency of Municipal Energy Systems; Energy Efficiency of Industrial Energy Systems; Consumer Behaviors; Load Control and Management; Electric Car and Hybrid Car; Energy Efficiency Improvement. Volume 5 - Energy Storage: Thermal Energy Storage; Chemical Storage; Mechanical Storage; Electrochemical Storage; Integrated Storage Systems. Volume 6 - Sustainability of Energy Systems: Sustainability Indicators, Evaluation Criteria, and Reporting; Regulation and Policy; Finance and Investment; Emission Trading; Modeling and Analysis of Energy Systems; Energy vs. Development; Low Carbon Economy; Energy Efficiencies and Emission Reduction. Key features: Comprising over 3,500 pages in 6 volumes, HCES presents a comprehensive overview of the latest research, developments and practical applications throughout all areas of clean energy systems, consolidating a wealth of information which is currently scattered across a wide variety of literature sources. In addition to renewable energy systems, HCES also covers processes for the efficient and clean conversion of traditional fuels such as coal, oil and gas, energy storage systems, mitigation technologies for the reduction of environmental pollutants, and the development of intelligent energy systems. Environmental, social and economic impacts of energy systems are also addressed in depth. Published in full colour throughout. Fully indexed with cross referencing within and between all six volumes. Edited by leading researchers from academia and industry who are internationally renowned and active in their respective fields. Published in print and online. The online version is a single publication (i.e. no updates), available for one-time purchase or through annual subscription.

NASA Technical Paper

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Publisher :
ISBN 13 :
Total Pages : 614 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis NASA Technical Paper by : United States. National Aeronautics and Space Administration

Download or read book NASA Technical Paper written by United States. National Aeronautics and Space Administration and published by . This book was released on 1978 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: