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Some Open Questions On The Jet Noise Problem
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Book Synopsis Some Open Questions on the Jet Noise Problem by : J. E. Ffowcs Williams
Download or read book Some Open Questions on the Jet Noise Problem written by J. E. Ffowcs Williams and published by . This book was released on 1968 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper starts with a description of the possible sources of sound that can be met in low Mach number jet flows, and their strength is given in terms of the flow parameters. The arguments are of order of magnitude only and the precise value of the coefficients accompanying these formulae are some of the details which wait to be resolved. The initial section deals with the issue of jet noise at very low speed where nozzle exit turbulence may be a major contributor. Lighthill's theory is then briefly summarized and used to estimate the sound of jets at moderate speeds. The object of this step is to show that very reasonable estimates of the field can be achieved from a very crude description of the turbulent flow without recourse to any of the more involved aspects of the quadrupole theory. Then the question of noise produced by combustion of excess fuel in the exhaust is examined according to Lighthill's theory. It is argued that this is unlikely to be a significant source of noise unless very large proportions of the fuel are burned in the exhaust. The theory is then applied to high Mach number situations where it is argued that the role of both Mach waves and shock waves needs further study. Finally, estimates of the sources to be expected in a moderate speed jet issuring from a multitube suppressor are made and a question is raised regarding the possible significance to the noise from the fully developed jet flow. (Author).
Book Synopsis Basic Aerodynamic Noise Research by : Ira R. Schwartz
Download or read book Basic Aerodynamic Noise Research written by Ira R. Schwartz and published by . This book was released on 1969 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1991 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Noise Around Us by : United States. Panel on Noise Abatement
Download or read book The Noise Around Us written by United States. Panel on Noise Abatement and published by . This book was released on 1970 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerodynamic Noise by : Arnold Goldburg
Download or read book Aerodynamic Noise written by Arnold Goldburg and published by . This book was released on 1970 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Problems Associated with High Speed Jet Noise by : J. D. Voce
Download or read book Some Problems Associated with High Speed Jet Noise written by J. D. Voce and published by . This book was released on 1970 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aircraft Noise Problems by : United States. Congress. House. Interstate & Foreign Commerce
Download or read book Aircraft Noise Problems written by United States. Congress. House. Interstate & Foreign Commerce and published by . This book was released on 1963 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Interstate and Foreign Commerce Publisher : ISBN 13 : Total Pages :766 pages Book Rating :4.0/5 (18 download)
Book Synopsis Aircraft Noise Problems by : United States. Congress. House. Committee on Interstate and Foreign Commerce
Download or read book Aircraft Noise Problems written by United States. Congress. House. Committee on Interstate and Foreign Commerce and published by . This book was released on 1963 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of the noise levels of aircrafts at the nations largest airports. Sept. 7, 1959, hearing was held in NYC; Apr. 20, 1960, hearing was held in San Francisco, Calif.; and Apr. 21, 1960, hearing was held in Inglewood, Calif.
Book Synopsis Community Reactions to Air Force Noise by : Paul N. Borsky
Download or read book Community Reactions to Air Force Noise written by Paul N. Borsky and published by . This book was released on 1961 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alleviation of Jet Aircraft Noise Near Airports by : Jet Aircraft Noise Panel (U.S.)
Download or read book Alleviation of Jet Aircraft Noise Near Airports written by Jet Aircraft Noise Panel (U.S.) and published by . This book was released on 1966 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flinovia—Flow Induced Noise and Vibration Issues and Aspects-II by : Elena Ciappi
Download or read book Flinovia—Flow Induced Noise and Vibration Issues and Aspects-II written by Elena Ciappi and published by Springer. This book was released on 2018-05-25 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the proceedings of the Second International Workshop on Flow Induced Noise and Vibration (FLINOVIA), which was held in Penn State, USA, in April 2016. The authors’ backgrounds represent a mix of academia, government, and industry, and several papers include applications to important problems for underwater vehicles, aerospace structures and commercial transportation. The book offers a valuable reference guide for all those working in the area of flow-induced vibration and noise. Flow induced vibration and noise (FIVN) remains a critical research topic. Even after over 50 years of intensive research, accurate and cost-effective FIVN simulation and measurement techniques remain elusive. This book gathers the latest research from some of the most prominent experts in the field. The book describes methods for characterizing wall pressure fluctuations, including subsonic and supersonic turbulent boundary layer flows over smooth and rough surfaces using computational methods like Large Eddy Simulation; for inferring wall pressure fluctuations using inverse techniques based on panel vibrations or holographic pressure sensor arrays; for calculating the resulting structural vibrations and radiated sound using traditional finite element methods, as well as advanced methods like Energy Finite Elements; for using scaling approaches to universally collapse flow-excited vibration and noise spectra; and for computing time histories of structural response, including alternating stresses.
Author :United States. Federal Aviation Administration. Office of Noise Abatement Publisher : ISBN 13 : Total Pages :52 pages Book Rating :4.3/5 ( download)
Book Synopsis The Aircraft/airport Noise Problem and Federal Government Policy by : United States. Federal Aviation Administration. Office of Noise Abatement
Download or read book The Aircraft/airport Noise Problem and Federal Government Policy written by United States. Federal Aviation Administration. Office of Noise Abatement and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aircraft Noise and Its Problems by : United States. Federal Aviation Agency. Library Services Division
Download or read book Aircraft Noise and Its Problems written by United States. Federal Aviation Agency. Library Services Division and published by . This book was released on 1962 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASD Technical Report written by and published by . This book was released on 1961 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics Publisher : ISBN 13 : Total Pages :256 pages Book Rating :4.0/5 (18 download)
Book Synopsis Aircraft Noise Abatement by : United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics
Download or read book Aircraft Noise Abatement written by United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Transportation and Aeronautics and published by . This book was released on 1968 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Results in Numerical and Experimental Fluid Mechanics VIII by : Andreas Dillmann
Download or read book New Results in Numerical and Experimental Fluid Mechanics VIII written by Andreas Dillmann and published by Springer Science & Business Media. This book was released on 2012-12-27 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the contributions to the 17th Symposium of STAB (German Aerospace Aerodynamics Association). STAB includes German scientists and engineers from universities, research establishments and industry doing research and project work in numerical and experimental fluid mechanics and aerodynamics, mainly for aerospace but also for other applications. Many of the contributions collected in this book present results from national and European Community sponsored projects. This volume gives a broad overview of the ongoing work in this field in Germany and spans a wide range of topics: airplane aerodynamics, multidisciplinary optimization and new configurations, hypersonic flows and aerothermodynamics, flow control (drag reduction and laminar flow control), rotorcraft aerodynamics, aeroelasticity and structural dynamics, numerical simulation, experimental simulation and test techniques, aeroacoustics as well as the new fields of biomedical flows, convective flows, aerodynamics and acoustics of high-speed trains.
Book Synopsis UTIAS Technical Note by : University of Toronto. Institute of Aerospace Studies
Download or read book UTIAS Technical Note written by University of Toronto. Institute of Aerospace Studies and published by . This book was released on 1970 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
