Jet Engine Test Cell Noise Reduction PDF Download
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Author: C. A. Kodres
Publisher:
ISBN: 9781423535324
Category :
Languages : en
Pages : 77
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Book Description
Passive methods for decreasing jet engine test cell noise emissions are evaluated and compared. Such methods have the dual advantages of low cost and simplicity. In addition, the effect on the aerothermal performance of the test cell is minimal. Sound pressure levels were measured in and around test facilities equipped with various devices to further reduce noise. The data were supplemented with parametric studies of noise reduction techniques conducted using a 1/20th scale physical model of the Navy's standard T-10 jet engine test cell. Methods that attack the noise problem from outside and methods that attack the problem from inside the test cell are assessed, including trees and other vegetation, acoustic walls, core busters, and modifications to the exhaust stack. Mounting screens in the path of the jet and increasing the height of the exhaust stack are found to be the most effective.
Author: C. A. Kodres
Publisher:
ISBN: 9781423535324
Category :
Languages : en
Pages : 77
Get Book Here
Book Description
Passive methods for decreasing jet engine test cell noise emissions are evaluated and compared. Such methods have the dual advantages of low cost and simplicity. In addition, the effect on the aerothermal performance of the test cell is minimal. Sound pressure levels were measured in and around test facilities equipped with various devices to further reduce noise. The data were supplemented with parametric studies of noise reduction techniques conducted using a 1/20th scale physical model of the Navy's standard T-10 jet engine test cell. Methods that attack the noise problem from outside and methods that attack the problem from inside the test cell are assessed, including trees and other vegetation, acoustic walls, core busters, and modifications to the exhaust stack. Mounting screens in the path of the jet and increasing the height of the exhaust stack are found to be the most effective.
Author: EG-1E Gas Turbine Test Facilities and Equipment
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This document discusses, in broad and general terms, the subject of acoustical considerations in engine test cells. One of the primary purposes of an engine test cell is to control the noise emanating from the operating engine in order to reduce noise in the surrounding facility and community to acceptable levels. This is done by the design and installation of specialized acoustic elements and features, which need to be fully integrated into the overall test cell design. It should be further noted, that the requirements of acoustic control are critical to the proper operation of the engine, safety of plant equipment and personnel, and meeting local and legal noise requirements. One of the primary purposes of engine test cells is reduce the sound emissions from the operating engine to the outside facility or community. The successful reduction and control of this noise requires specialized knowledge, experience, and execution. This paper explores the definitions, requirements, basic science, and recommendations for a test cell operator to select and evaluate qualified solutions and contractors for test cell noise reduction.
Author: Norman Doelling
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 212
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Book Description
Author: Norman Doelling
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 180
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
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Book Description
Author: John T. Welbourn
Publisher:
ISBN:
Category : Absorption of sound
Languages : en
Pages : 104
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Book Description
This report summarizes an investigation and test of improved materials, noise control devices, and methods of application to engine test stands for the purpose ocing radiated noise and in creasing structural durability. Included are excerpts from an acoustical survey of a modified test stand and a full report of the acoustical evaluation of experimental exhaust units for a Transportable Turbojet Engine Test Stand. Exper imental work was performed at Wright-Patterson Air Force Base, Ohio. (Author).
Author: F. S. Anderson
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Bozzano G Luisa
Publisher: Elsevier
ISBN: 148329207X
Category : Science
Languages : en
Pages : 314
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Book Description
Engine Testing: Theory and Practice brings together the information on both the theory and practice of engine testing that engineers in this field must have available. Organized into 19 chapters, this book begins with a description of the engine test cell, including the salient features of its main types. Subsequent chapters deal with the other main components of an engine testing installation: the control room and the ventilation systems. Other chapters discuss the essential features of a test installation fuel supply system, as well as the characteristics, advantages, and disadvantages of the various types of dynamometer. The measurements of torque, power, speed, fuel consumption, air consumption, heat loss, and mechanical loss are also explained. Other topics of significance include the process of combustion, exhaust emissions, data logging, and statistical analysis. This material will be very useful to practicing test engineers and students.
Author:
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 90
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Book Description
Author: Anthony Martyr
Publisher: Elsevier
ISBN: 0080969496
Category : Technology & Engineering
Languages : en
Pages : 601
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Book Description
This book brings together the large and scattered body of information on the theory and practice of engine testing, to which any engineer responsible for work of this kind must have access. Engine testing is a fundamental part of development of new engine and powertrain systems, as well as of the modification of existing systems. It forms a significant part of the practical work of many automotive and mechanical engineers, in the auto manufacturing companies, their suppliers suppliers, specialist engineering services organisations, the motor sport sector, hybrid vehicles and tuning sector. The eclectic nature of engine, powertrain, chassis and whole vehicle testing makes this comprehensive book a true must-have reference for those in the automotive industry as well as more advanced students of automotive engineering. * The only book dedicated to engine testing; over 4000 copies sold of the second edition * Covers all key aspects of this large topic, including test-cell set up, data management, dynamometer selection and use, air, thermal, combustion, mechanical, and emissions assessment * Most automotive engineers are involved with many aspects covered by this book, making it a must-have reference
