Aerodynamically Induced Pressure Oscillations In Cavities Physical Mechanisms And Suppression Concepts

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Suppression of Aerodynamically Induced Cavity Pressure Oscillations

Author : Leonard L. Shaw
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Suppression of Aerodynamically Induced Cavity Pressure Oscillations by : Leonard L. Shaw

Download or read book Suppression of Aerodynamically Induced Cavity Pressure Oscillations written by Leonard L. Shaw and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: A flight test program was performed to gain further insight into the phenomenon of flow-induced cavity pressure oscillations and to evaluate the effectiveness of suppression concepts in eliminating or reducing the pressure oscillations. The cavities tested were rectangular with approximate dimensions of 17 inches long, 8.5 inches deep, and 8.75 inches wide and were instrumented with microphones, static pressure ports, and a thermocouple. The flight speeds ranged from Mach number 0.6 to 1.3 at pressure altitudes of 3,000, 20,000, and 30,000 feet. The suppression devices included leading edge spoilers and deflectors and trailing edge ramps and deflectors. Several combinations of these were tested. The results indicate that the flow-induced pressure oscillations in a cavity of the dimensions tested and for the speed range tested can be significantly reduced with leading edge spoilers in conjunction with a trailing edge ramp. Reductions as large as 30 dB were achieved for the predominant model frequency for a one-third octave band. Other combinations of the suppression devices afforded some reduction, but the spoiler ramp combination proved most effective. (Author).

Proceedings of the National Aerospace Propulsion Conference

Author : Gullapalli Sivaramakrishna
Publisher : Springer Nature
ISBN 13 : 9811923787
Total Pages : 633 pages
Book Rating : 4.8/5 (119 download)

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Book Synopsis Proceedings of the National Aerospace Propulsion Conference by : Gullapalli Sivaramakrishna

Download or read book Proceedings of the National Aerospace Propulsion Conference written by Gullapalli Sivaramakrishna and published by Springer Nature. This book was released on 2022-07-23 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the 3rd National Aerospace Propulsion Conference (NAPC 2020). It discusses the recent trends in the area of aerospace propulsion technologies covering both air-breathing and non-air-breathing propulsion. The topics covered include state-of-the-art design, analysis and developmental testing of gas turbine engine modules and sub-systems like compressor, combustor, turbine and alternator; advances in spray injection and atomization; aspects of combustion pertinent to all types of propulsion systems and nuances of space, missile and alternative propulsion systems. The book will be a valuable reference for beginners, researchers and professionals interested in aerospace propulsion and allied fields.

Mechanics of Flow-Induced Sound and Vibration V1

Author : William K. Blake
Publisher : Elsevier
ISBN 13 : 0323149618
Total Pages : 459 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis Mechanics of Flow-Induced Sound and Vibration V1 by : William K. Blake

Download or read book Mechanics of Flow-Induced Sound and Vibration V1 written by William K. Blake and published by Elsevier. This book was released on 2012-12-02 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanics of Flow-Induced Sound and Vibration: Volume 1 discusses a broad selection of flow sources that are widely encountered in many applications of subsonic flow engineering and provides combined physical and mathematical analyses of each of these sources. It classifies each of the leading sources of vibration and sound induced by various types of fluid motion and unifies the disciplines essential to describing each source. The book considers sources such as jet noise, flow-induced tones and self-excited vibration, dipole sound from rigid and flexible acoustically compact surfaces, random vibration of flow-excited plates and cylindrical shells, cavitation noise, acoustic transmission characteristics and sound radiation from bubbly liquids, splash noise, throttling and ventilation system noises, lifting surface flow noise and vibration, and tonal and broadband sounds from rotating machinery. It also integrates the fundamentals of the subject with the many practicalities of the design of quiet vibration-free machinery. This book caters to advanced students well-versed in applied mathematics, fluid mechanics, and vibrations, strength of materials, acoustics, and statistical methods.

The Shock and Vibration Bulletin

Author :
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis The Shock and Vibration Bulletin by :

Download or read book The Shock and Vibration Bulletin written by and published by . This book was released on 1986 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings of the 6th China Aeronautical Science and Technology Conference

Author : Chinese Aeronautical Society
Publisher : Springer Nature
ISBN 13 : 9819988640
Total Pages : 742 pages
Book Rating : 4.8/5 (199 download)

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Book Synopsis Proceedings of the 6th China Aeronautical Science and Technology Conference by : Chinese Aeronautical Society

Download or read book Proceedings of the 6th China Aeronautical Science and Technology Conference written by Chinese Aeronautical Society and published by Springer Nature. This book was released on 2024-01-06 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the original peer-reviewed research papers presented at the 6th China Aeronautical Science and Technology Conference held in Wuzhen, Zhejiang Province, China, in September 2023. Topics covered include but are not limited to Navigation/Guidance and Control Technology, Aircraft Design and Overall Optimisation of Key Technologies, Aviation Testing Technology, Airborne Systems/Electromechanical Technology, Structural Design, Aerodynamics and Flight Mechanics, Advanced Aviation Materials and Manufacturing Technology, Advanced Aviation Propulsion Technology, and Civil Aviation Transportation. The papers presented here share the latest findings in aviation science and technology, making the book a valuable resource for researchers, engineers and students in related fields.

Fluid Mechanics and Fluid Power – Contemporary Research

Author : Arun K. Saha
Publisher : Springer
ISBN 13 : 8132227433
Total Pages : 1638 pages
Book Rating : 4.1/5 (322 download)

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Book Synopsis Fluid Mechanics and Fluid Power – Contemporary Research by : Arun K. Saha

Download or read book Fluid Mechanics and Fluid Power – Contemporary Research written by Arun K. Saha and published by Springer. This book was released on 2016-09-20 with total page 1638 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises the proceedings of the 42nd National and 5th International Conference on Fluid Mechanics and Fluid Power held at IIT Kanpur in December, 2014.The conference proceedings encapsulate the best deliberations held during the conference. The diversity of participation in the conference, from academia, industry and research laboratories reflects in the articles appearing in the volume. This contributed volume has articles from authors who have participated in the conference on thematic areas such as Fundamental Issues and Perspectives in Fluid Mechanics; Measurement Techniques and Instrumentation; Computational Fluid Dynamics; Instability, Transition and Turbulence; Turbomachinery; Multiphase Flows; Fluid‐Structure Interaction and Flow‐Induced Noise; Microfluidics; Bio‐inspired Fluid Mechanics; Internal Combustion Engines and Gas Turbines; and Specialized Topics. The contents of this volume will prove useful to researchers from industry and academia alike.

NASA Technical Note

Author :
Publisher :
ISBN 13 :
Total Pages : 432 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis NASA Technical Note by :

Download or read book NASA Technical Note written by and published by . This book was released on 1976 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mechanics of Flow-Induced Sound and Vibration, Volume 1

Author : William K. Blake
Publisher : Academic Press
ISBN 13 : 0128122897
Total Pages : 504 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Mechanics of Flow-Induced Sound and Vibration, Volume 1 by : William K. Blake

Download or read book Mechanics of Flow-Induced Sound and Vibration, Volume 1 written by William K. Blake and published by Academic Press. This book was released on 2017-06-13 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanics of Flow-Induced Sound and Vibration, Volume 1: General Concepts and Elementary Sources, Second Edition, enables readers to fully understand flow-induced vibration and sound, unifying the disciplines of fluid dynamics, structural dynamics, vibration, acoustics, and statistics in order to classify and examine each of the leading sources of vibration and sound induced by various types of fluid motion. Starting with classical theories of aeroacoustics and hydroacoustics, a formalism of integral solutions valid for sources near boundaries is developed and then broadened to address different source types, including jet noise, flow tones, dipole sound from cylinders, and cavitation noise. Step-by-step derivations clearly identify any assumptions made throughout. Each chapter is illustrated with comparisons of leading formulas and measured data. Along with its companion, Mechanics of Flow-Induced Sound and Vibration, Volume 2: Complex Flow-Structure Interactions, the book covers everything an engineer needs to understand flow-induced sound and vibration. This book will be essential reading for postgraduate students, and for engineers and researchers with an interest in aerospace, ships and submarines, offshore structures, construction, and ventilation. Presents every important topic in flow-induced sound and vibration Covers all aspects of the topics addressed, from fundamental theory, to the analytical formulas used in practice Provides the building blocks of computer modeling for flow-induced sound and vibration

NASA Technical Memorandum

Author :
Publisher :
ISBN 13 :
Total Pages : 608 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 1990 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Technical Abstract Bulletin

Author :
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Technical Abstract Bulletin by :

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1980 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

90-3994 to 90-4033

Author :
Publisher :
ISBN 13 :
Total Pages : 488 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis 90-3994 to 90-4033 by :

Download or read book 90-3994 to 90-4033 written by and published by . This book was released on 1990 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Landing Gear and Cavity Noise Prediction

Author : Donald B. Bliss
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Landing Gear and Cavity Noise Prediction by : Donald B. Bliss

Download or read book Landing Gear and Cavity Noise Prediction written by Donald B. Bliss and published by . This book was released on 1976 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3600 - 2000-3649

Author :
Publisher :
ISBN 13 :
Total Pages : 552 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3600 - 2000-3649 by :

Download or read book 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3600 - 2000-3649 written by and published by . This book was released on 2000 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mechanics of Flow-induced Sound and Vibration: General concepts and elementary sources

Author : William K. Blake
Publisher :
ISBN 13 :
Total Pages : 472 pages
Book Rating : 4.:/5 ( download)

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Book Synopsis Mechanics of Flow-induced Sound and Vibration: General concepts and elementary sources by : William K. Blake

Download or read book Mechanics of Flow-induced Sound and Vibration: General concepts and elementary sources written by William K. Blake and published by . This book was released on 1986 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: V. 1. General concepts and elementary sources -- v. 2. Complex flow-structure interactions.

Theoretical And Computational Acoustics - Proceedings Of The International Conference (In 2 Volumes)

Author : John E Ffowcs Williams
Publisher : World Scientific
ISBN 13 : 9814551724
Total Pages : 1028 pages
Book Rating : 4.8/5 (145 download)

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Book Synopsis Theoretical And Computational Acoustics - Proceedings Of The International Conference (In 2 Volumes) by : John E Ffowcs Williams

Download or read book Theoretical And Computational Acoustics - Proceedings Of The International Conference (In 2 Volumes) written by John E Ffowcs Williams and published by World Scientific. This book was released on 1994-10-25 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: This conference provided a forum for active researchers to discuss the state of the art in theoretical and computational acoustics. Topics covered structural acoustics, scattering, 3-dimensional propagational problems, fluid/elastic interfaces, wavelets and their impact on acoustics, computational methods and supercomputing.

Air Breathing Engines and Aerospace Propulsion

Author : B. N. Raghunandan
Publisher : Allied Publishers
ISBN 13 : 9788177646900
Total Pages : 752 pages
Book Rating : 4.6/5 (469 download)

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Book Synopsis Air Breathing Engines and Aerospace Propulsion by : B. N. Raghunandan

Download or read book Air Breathing Engines and Aerospace Propulsion written by B. N. Raghunandan and published by Allied Publishers. This book was released on 2004 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributed papers presented at the 7th National Conference on Air Breathing Engines and Aerospace Propulsion, hosted at I.I.T., Kanpur.

Weapon Bay Cavity Noise Environments, Data Correlation and Prediction for the B-1 Aircraft

Author : A. G. Tipton
Publisher :
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Weapon Bay Cavity Noise Environments, Data Correlation and Prediction for the B-1 Aircraft by : A. G. Tipton

Download or read book Weapon Bay Cavity Noise Environments, Data Correlation and Prediction for the B-1 Aircraft written by A. G. Tipton and published by . This book was released on 1980 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: During development of the B-1 aircraft, an extensive cavity noise measurement and noise reduction program using wind tunnel models and evaluation on a flight-test aircraft was conducted. Substantial cavity noise reduction was achieved with retrofitted spoilers for a mach 0.6 to 1 range for the weapon bay cavity of L/D = 2.2. A substantial amount of cavity unsuppressed and suppressed data were acquired from wind tunnel models and the full-scale aircraft. Data for weapon bay cavities with internal stores and multiple open cavities was also obtained. The data acquired during development of B-1 cavity noise suppressors are correlated and compared with previously published data. The data are correlated with existing prediction techniques and modifications to the current prediction techniques, and guidelines are recommended.