Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 994
Book Description
Scientific and Technical Aerospace Reports
Author: Aerodynamic Design of Axial-flow Compressors
Author: Lewis Research CenterPublisher:
ISBN:
Category : Axial flow compressors
Languages : en
Pages : 542
Book Description
Compressor Surge and Stall
Author: R. C. PampreenPublisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 532
Book Description
High efficiency axial and centrifugal compressors are important in fields as diverse as aircraft engines, superchargers and turbochargers, process and refrigeration compressors. Compressors must achieve high efficiency in blade rows in diffusing flow fields. Of equal and sometimes greater importance is the range os stable operation of the compressor. Blade row stall characteristics determine the limit os stable operation. Blading can stall uniformly with symmetric flow breakdown or asymmetrically in rotating stall, wich propagates around the periphery of the blade row. Depending on aerodynamic conditions, surge may occur instead of, in concert with, or subsequent to blade row stall. The transient breakdown and recovery of aerodynamic loading not only limits compressor performance but also leads to mechanical failures caused by the vibrational loads imposed on the blades. There is no need to know what initiates these performance limits so that surge and stall margins can be optimized and control strategies can be planned. the first step toward understanding is to be knowledgeable about he physical processes occurring during surge and stall. This will permit the designer to anticipate variable geometry needs such as variable inlet guide vanes, variable statuors, and bleed port strategies. Theoritical treatment is far from being well established, however, there are many approaches discussed in the literature. This book is a unique reference to the subject matter. Physical descriptions of the phenomena are given, test results are presented, and analytical studies are discussed. There has been much written about the experimental investigations and theoretical treatments related to surge and stall. To assist those who would pursue advancements in furthering ou knowledge of surge and stall, it seemed appropriate to have a resource that contains a compendium of information on this subject. That is the purpose of this book. [Source : d'après la 4e de couverture].
Aerodynamic Design of Axial Flow Compressors
Author: Robert O. BullockPublisher:
ISBN:
Category : Axial flow compressors
Languages : en
Pages : 552
Book Description
Aeronautical Engineering
Author: Engineering Fluid Dynamics 2018
Author: Bjørn H. HjertagerPublisher: MDPI
ISBN: 3039281127
Category : Technology & Engineering
Languages : en
Pages : 256
Book Description
“Engineering Fluid Dynamics 2018”. The topic of engineering fluid dynamics includes both experimental as well as computational studies. Of special interest were submissions from the fields of mechanical, chemical, marine, safety, and energy engineering. We welcomed both original research articles as well as review articles. After one year, 28 papers were submitted and 14 were accepted for publication. The average processing time was 37.91 days. The authors had the following geographical distribution: China (9); Korea (3); Spain (1); and India (1). Papers covered a wide range of topics, including analysis of fans, turbines, fires in tunnels, vortex generators, deep sea mining, as well as pumps.
NASA SP.
Author: Aircraft Propulsion
Author: Saeed FarokhiPublisher: John Wiley & Sons
ISBN: 1119718643
Category : Technology & Engineering
Languages : en
Pages : 1045
Book Description
Explore the latest edition of a leading resource on sustainable aviation, alternative jet fuels, and new propulsion systems The newly revised Third Edition of Aircraft Propulsion delivers a comprehensive update to the successful Second Edition with a renewed focus on the integration of sustainable aviation concepts. The book tackles the impact of aviation on the environment at the engine component level, as well as the role of propulsion system integration on fuel burn. It also discusses combustion emissions, including greenhouse gases, carbon monoxide, unburned hydrocarbons (UHC), and oxides of nitrogen (NOx). Alternative jet fuels, like second generation biofuels and hydrogen, are presented. The distinguished author covers aviation noise from airframe to engine and its impact on community noise in landing and takeoff cycles. The book includes promising new technologies for propulsion and power, like the ultra-high bypass (UHB) turbofan and hybrid-electric and electric propulsion systems. Readers will also benefit from the inclusion of discussions of unsteady propulsion systems in wave-rotor combustion and pulse-detonation engines, as well as: A thorough introduction to the history of the airbreathing jet engine, including innovations in aircraft gas turbine engines, new engine concepts, and new vehicles An exploration of compressible flow with friction and heat, including a brief review of thermodynamics, isentropic process and flow, conservation principles, and Mach numbers A review of engine thrust and performance parameters, including installed thrust, rocket thrust, and modern engine architecture A discussion of gas turbine engine cycle analysis Perfect for aerospace and mechanical engineering students in the United States and overseas, Aircraft Propulsion will also earn a place in the libraries of practicing engineers in the aerospace and green engineering sectors seeking the latest up to date resource on sustainable aviation technologies.
Applied Mechanics Reviews
Author: Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 562
Book Description