תרגיל ללמוד כתיבת האותיות
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Published: 1981
Total Pages: 105
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DOWNLOAD EBOOKAuthor:
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Published: 1981
Total Pages: 104
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DOWNLOAD EBOOKAuthor: J. Odgers
Publisher: CRC Press
Published: 1986
Total Pages: 204
ISBN-13: 9780856263422
DOWNLOAD EBOOKFilmed work by students of the School of Design, Swinburne University of Technology.
Author: Meredith Colket
Publisher:
Published: 2021
Total Pages: 0
ISBN-13: 9781624106033
DOWNLOAD EBOOKIn summarizing the results obtained in the first five years of the National Jet Fuel Combustion Program (NJFCP), this book demonstrates that there is still much to be learned about the combustion of alternative jet fuels.
Author: R. Ernst
Publisher:
Published: 1983
Total Pages: 78
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DOWNLOAD EBOOKThe objective of this study was to develop and/or improve correlations of fuel properties and engine design with combustion performance and hot section durability. The data base consisted primarily of fuel effect data obtained over the past four years under a number of DoD contracts. The approach taken was first to develop fuel effect correlations for specific combustor configurations, then to tie together these correlations using engine design parameters thereby allowing prediction of fuel effects in any current or future aircraft gas turbine combustion system. In most cases statistical analysis was used to identify the correlating variables. The relationships developed for individual combustors were then correlated with combustor design and operating parameters that were influence by fuel differences.
Author: Timothy C. Lieuwen
Publisher: Cambridge University Press
Published: 2013-07-08
Total Pages: 385
ISBN-13: 052176405X
DOWNLOAD EBOOKThe development of clean, sustainable energy systems is a preeminent issue in our time. Gas turbines will continue to be important combustion-based energy conversion devices for many decades to come, used for aircraft propulsion, ground-based power generation, and mechanical-drive applications. This book compiles the key scientific and technological knowledge associated with gas turbine emissions into a single authoritative source.
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Published: 1967
Total Pages: 866
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DOWNLOAD EBOOKAuthor: Timothy C. Lieuwen
Publisher: AIAA (American Institute of Aeronautics & Astronautics)
Published: 2005
Total Pages: 688
ISBN-13:
DOWNLOAD EBOOKThis book offers gas turbine users and manufacturers a valuable resource to help them sort through issues associated with combustion instabilities. In the last ten years, substantial efforts have been made in the industrial, governmental, and academic communities to understand the unique issues associated with combustion instabilities in low-emission gas turbines. The objective of this book is to compile these results into a series of chapters that address the various facets of the problem. The Case Studies section speaks to specific manufacturer and user experiences with combustion instabilities in the development stage and in fielded turbine engines. The book then goes on to examine The Fundamental Mechanisms, The Combustor Modeling, and Control Approaches.
Author: Anna Schwarz
Publisher: Springer Science & Business Media
Published: 2009-06-17
Total Pages: 304
ISBN-13: 3642020380
DOWNLOAD EBOOKNovember, 2008 Anna Schwarz, Johannes Janicka In the last thirty years noise emission has developed into a topic of increasing importance to society and economy. In ?elds such as air, road and rail traf?c, the control of noise emissions and development of associated noise-reduction techno- gies is a central requirement for social acceptance and economical competitiveness. The noise emission of combustion systems is a major part of the task of noise - duction. The following aspects motivate research: • Modern combustion chambers in technical combustion systems with low pol- tion exhausts are 5 - 8 dB louder compared to their predecessors. In the ope- tional state the noise pressure levels achieved can even be 10-15 dB louder. • High capacity torches in the chemical industry are usually placed at ground level because of the reasons of noise emissions instead of being placed at a height suitable for safety and security. • For airplanes the combustion emissions become a more and more important topic. The combustion instability and noise issues are one major obstacle for the introduction of green technologies as lean fuel combustion and premixed burners in aero-engines. The direct and indirect contribution of combustion noise to the overall core noise is still under discussion. However, it is clear that the core noise besides the fan tone will become an important noise source in future aero-engine designs. To further reduce the jet noise, geared ultra high bypass ratio fans are driven by only a few highly loaded turbine stages.