Noise Benefits of Increased Fan Bypass Nozzle Area

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721683918
Total Pages : 24 pages
Book Rating : 4.6/5 (839 download)

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Book Synopsis Noise Benefits of Increased Fan Bypass Nozzle Area by : National Aeronautics and Space Administration (NASA)

Download or read book Noise Benefits of Increased Fan Bypass Nozzle Area written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: An advanced model turbofan (typical of current engine technology) was tested in the NASA Glenn 9 by 15 Foot Low Speed Wind Tunnel (9-by 15-Foot LSWT) to explore far field acoustic effects of increased bypass nozzle area. This fan stage test was part of the NASA Glenn Fan Broadband Source Diagnostic Test, second entry (SDT2) which acquired aeroacoustic results over a range of test conditions. The baseline nozzle was sized to produce maximum stage performance for the engine at a high altitude, cruise point condition. However, the wind tunnel testing is conducted near sea level conditions. Therefore, in order to simulate and obtain performance at other aircraft operating conditions, two additional nozzles were designed and tested-one with a +5 percent increase in weight flow (+5.4 percent increase in nozzle area compared with the baseline nozzle), sized to simulate the performance at the stage design point conditions, and the other with a +7.5 percent increase in weight flow (+10.9 percent increase in nozzle area), sized for maximum weight flow with a fixed nozzle at sea level conditions. Measured acoustic benefits with increased nozzle area were very encouraging, showing overall sound power level (OAPWL) reductions of 2 or more dB while the stage thrust actually increased by several percentage points except fro the most open nozzle at takeoff rotor speed where stage performance decreased. These noise reduction benefits were seen to primarily affect broadband noise, and were evident throughout the range of measured sideline angles. Woodward, Richard P. and Hughes, Christopher E. Glenn Research Center NASA/TM-2004-213396, AIAA Paper 2005-1201, E-14899

Research & Technology 2004

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Publisher : DIANE Publishing
ISBN 13 : 1428918183
Total Pages : 226 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Research & Technology 2004 by :

Download or read book Research & Technology 2004 written by and published by DIANE Publishing. This book was released on with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

43rd AIAA Aerospace Sciences Meeting & Exhibit

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Publisher :
ISBN 13 :
Total Pages : 612 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis 43rd AIAA Aerospace Sciences Meeting & Exhibit by :

Download or read book 43rd AIAA Aerospace Sciences Meeting & Exhibit written by and published by . This book was released on 2005 with total page 612 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.

Smart Structures Theory

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Publisher : Cambridge University Press
ISBN 13 : 052186657X
Total Pages : 925 pages
Book Rating : 4.5/5 (218 download)

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Book Synopsis Smart Structures Theory by : Inderjit Chopra

Download or read book Smart Structures Theory written by Inderjit Chopra and published by Cambridge University Press. This book was released on 2014 with total page 925 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on smart materials and structures, which are also referred to as intelligent, adaptive, active, sensory, and metamorphic. The ultimate goal is to develop biologically inspired multifunctional materials with the capability to adapt their structural characteristics, monitor their health condition, perform self-diagnosis and self-repair, morph their shape, and undergo significant controlled motion.

Aeronautical Research and Development

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Publisher :
ISBN 13 :
Total Pages : 968 pages
Book Rating : 4.0/5 (17 download)

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Book Synopsis Aeronautical Research and Development by : United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Aeronautics and Space Technology

Download or read book Aeronautical Research and Development written by United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Aeronautics and Space Technology and published by . This book was released on 1972 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Jet Propulsion

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Publisher : Cambridge University Press
ISBN 13 : 9780521541442
Total Pages : 326 pages
Book Rating : 4.5/5 (414 download)

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Book Synopsis Jet Propulsion by : N. A. Cumpsty

Download or read book Jet Propulsion written by N. A. Cumpsty and published by Cambridge University Press. This book was released on 2003-08-14 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second edition of Cumpsty's excellent self-contained introduction to the aerodynamic and thermodynamic design of modern civil and military jet engines. Through two engine design projects, first for a new large passenger aircraft, and second for a new fighter aircraft, the text introduces, illustrates and explains the important facets of modern engine design. Individual sections cover aircraft requirements and aerodynamics, principles of gas turbines and jet engines, elementary compressible fluid mechanics, bypass ratio selection, scaling and dimensional analysis, turbine and compressor design and characteristics, design optimization, and off-design performance. The book emphasises principles and ideas, with simplification and approximation used where this helps understanding. This edition has been thoroughly updated and revised, and includes a new appendix on noise control and an expanded treatment of combustion emissions. Suitable for student courses in aircraft propulsion, but also an invaluable reference for engineers in the engine and airframe industry.

Shape Memory Alloy Engineering

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Publisher : Elsevier
ISBN 13 : 0080999212
Total Pages : 449 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Shape Memory Alloy Engineering by : Antonio Concilio

Download or read book Shape Memory Alloy Engineering written by Antonio Concilio and published by Elsevier. This book was released on 2014-09-25 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shape Memory Alloy Engineering introduces materials, mechanical, and aerospace engineers to shape memory alloys (SMAs), providing a unique perspective that combines fundamental theory with new approaches to design and modeling of actual SMAs as compact and inexpensive actuators for use in aerospace and other applications. With this book readers will gain an understanding of the intrinsic properties of SMAs and their characteristic state diagrams, allowing them to design innovative compact actuation systems for applications from aerospace and aeronautics to ships, cars, and trucks. The book realistically discusses both the potential of these fascinating materials as well as their limitations in everyday life, and how to overcome some of those limitations in order to achieve proper design of useful SMA mechanisms. Discusses material characterization processes and results for a number of newer SMAs Incorporates numerical (FE) simulation and integration procedures into commercial codes (Msc/Nastran, Abaqus, and others) Provides detailed examples on design procedures and optimization of SMA-based actuation systems for real cases, from specs to verification lab tests on physical demonstrators One of the few SMA books to include design and set-up of demonstrator characterization tests and correlation with numerical models

Jet Propulsion

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Publisher : Cambridge University Press
ISBN 13 : 1107511224
Total Pages : 369 pages
Book Rating : 4.1/5 (75 download)

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Book Synopsis Jet Propulsion by : Nicholas Cumpsty

Download or read book Jet Propulsion written by Nicholas Cumpsty and published by Cambridge University Press. This book was released on 2015-07-22 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to the design of modern civil and military jet engines using engine design projects.

The Power for Flight

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Publisher : Government Printing Office
ISBN 13 : 9781626830370
Total Pages : 318 pages
Book Rating : 4.8/5 (33 download)

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Book Synopsis The Power for Flight by : Jeremy R. Kinney

Download or read book The Power for Flight written by Jeremy R. Kinney and published by Government Printing Office. This book was released on 2018-02-15 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NACA and aircraft propulsion, 1915-1958 -- NASA gets to work, 1958-1975 -- The shift toward commercial aviation, 1966-1975 -- The quest for propulsive efficiency, 1976-1989 -- Propulsion control enters the computer era, 1976-1998 -- Transiting to a new century, 1990-2008 -- Toward the future

Theory and Practice of Aircraft Performance

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Publisher : John Wiley & Sons
ISBN 13 : 1119074193
Total Pages : 704 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Theory and Practice of Aircraft Performance by : Ajoy Kumar Kundu

Download or read book Theory and Practice of Aircraft Performance written by Ajoy Kumar Kundu and published by John Wiley & Sons. This book was released on 2016-09-02 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Textbook introducing the fundamentals of aircraft performance using industry standards and examples: bridging the gap between academia and industry Provides an extensive and detailed treatment of all segments of mission profile and overall aircraft performance Considers operating costs, safety, environmental and related systems issues Includes worked examples relating to current aircraft (Learjet 45, Tucano Turboprop Trainer, Advanced Jet Trainer and Airbus A320 types of aircraft) Suitable as a textbook for aircraft performance courses

NASA's First A

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Publisher :
ISBN 13 :
Total Pages : 312 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis NASA's First A by : Robert G. Ferguson

Download or read book NASA's First A written by Robert G. Ferguson and published by . This book was released on 2013 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

XVI International Symposium on Air Breathing Engines 2003

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Publisher :
ISBN 13 : 9781563476396
Total Pages : 238 pages
Book Rating : 4.4/5 (763 download)

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Book Synopsis XVI International Symposium on Air Breathing Engines 2003 by : American Institute of Aeronautics and Astronautics

Download or read book XVI International Symposium on Air Breathing Engines 2003 written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2003 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Metal Matrix Composites

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Publisher : Woodhead Publishing
ISBN 13 : 9781855731349
Total Pages : 940 pages
Book Rating : 4.7/5 (313 download)

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Book Synopsis Metal Matrix Composites by : International Conference on Composite Materials

Download or read book Metal Matrix Composites written by International Conference on Composite Materials and published by Woodhead Publishing. This book was released on 1993 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Noise Control Act of 1971 and Amendments

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Publisher :
ISBN 13 :
Total Pages : 380 pages
Book Rating : 4.0/5 (1 download)

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Book Synopsis Noise Control Act of 1971 and Amendments by : United States. Congress. Senate. Committee on Commerce. Subcommittee on the Environment

Download or read book Noise Control Act of 1971 and Amendments written by United States. Congress. Senate. Committee on Commerce. Subcommittee on the Environment and published by . This book was released on 1972 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Noise Control Act of 1971 and Amendments, Hearings Before the Subcommittee on the Environment....92-1, on S. 1016...and S. 1566...

Download Noise Control Act of 1971 and Amendments, Hearings Before the Subcommittee on the Environment....92-1, on S. 1016...and S. 1566... PDF Online Free

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Publisher :
ISBN 13 :
Total Pages : 1024 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Noise Control Act of 1971 and Amendments, Hearings Before the Subcommittee on the Environment....92-1, on S. 1016...and S. 1566... by : United States. Congress. Senate. Commerce

Download or read book Noise Control Act of 1971 and Amendments, Hearings Before the Subcommittee on the Environment....92-1, on S. 1016...and S. 1566... written by United States. Congress. Senate. Commerce and published by . This book was released on 1971 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:

FAR Part 36 Compliance Regulation

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Publisher :
ISBN 13 :
Total Pages : 412 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis FAR Part 36 Compliance Regulation by : United States. Federal Aviation Administration

Download or read book FAR Part 36 Compliance Regulation written by United States. Federal Aviation Administration and published by . This book was released on 1976 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: