Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
The Effect Of Magnetohydrodynamic Energy Bypass On Specific Thrust For A Supersonic Turbojet Engine
Download The Effect Of Magnetohydrodynamic Energy Bypass On Specific Thrust For A Supersonic Turbojet Engine full books in PDF, epub, and Kindle. Read online The Effect Of Magnetohydrodynamic Energy Bypass On Specific Thrust For A Supersonic Turbojet Engine ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis The Effect of Magnetohydrodynamic Energy Bypass on Specific Thrust for a Supersonic Turbojet Engine by : Theresa L. Benyo
Download or read book The Effect of Magnetohydrodynamic Energy Bypass on Specific Thrust for a Supersonic Turbojet Engine written by Theresa L. Benyo and published by BiblioGov. This book was released on 2013-07 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the preliminary results of a thermodynamic cycle analysis of a supersonic turbojet engine with a magnetohydrodynamic (MHD) energy bypass system that explores a wide range of MHD enthalpy extraction parameters. Through the analysis described here, it is shown that applying a magnetic field to a flow path in the Mach 2.0 to 3.5 range can increase the specific thrust of the turbojet engine up to as much as 420 N/(kg/s) provided that the magnitude of the magnetic field is in the range of 1 to 5 Tesla. The MHD energy bypass can also increase the operating Mach number range for a supersonic turbojet engine into the hypersonic flight regime. In this case, the Mach number range is shown to be extended to Mach 7.0.
Book Synopsis The effect of magnetohydrodynamic (MHD) energy bypass on specific thrust for a supersonic turbojet engine by : Theresa L. Benyo
Download or read book The effect of magnetohydrodynamic (MHD) energy bypass on specific thrust for a supersonic turbojet engine written by Theresa L. Benyo and published by . This book was released on 2010 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical and Computational Investigations of a Magnetohydrodynamic (MHD) Energy-bypass System for Supersonic Gas Turbine Engines to Enable Hypersonic Flight by : Theresa Louise Benyo
Download or read book Analytical and Computational Investigations of a Magnetohydrodynamic (MHD) Energy-bypass System for Supersonic Gas Turbine Engines to Enable Hypersonic Flight written by Theresa Louise Benyo and published by . This book was released on 2013 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, the National Aeronautics and Space Administration (NASA) has used rocket-powered vehicles as launch vehicles for access to space. A familiar example is the Space Shuttle launch system. These vehicles carry both fuel and oxidizer onboard. If an external oxidizer (such as the Earth's atmosphere) is utilized, the need to carry an onboard oxidizer is eliminated, and future launch vehicles could carry a larger payload into orbit at a fraction of the total fuel expenditure. For this reason, NASA is currently researching the use of air-breathing engines to power the first stage of two-stage-to-orbit hypersonic launch systems. Removing the need to carry an onboard oxidizer leads also to reductions in total vehicle weight at liftoff. This in turn reduces the total mass of propellant required, and thus decreases the cost of carrying a specific payload into orbit or beyond. However, achieving hypersonic flight with air-breathing jet engines has several technical challenges. These challenges, such as the mode transition from supersonic to hypersonic engine operation, are under study in NASA's Fundamental Aeronautics Program. One propulsion concept that is being explored is a magnetohydrodynamic (MHD) energy- bypass generator coupled with an off-the-shelf turbojet/turbofan. It is anticipated that this engine will be capable of operation from takeoff to Mach 7 in a single flowpath without mode transition. The MHD energy bypass consists of an MHD generator placed directly upstream of the engine, and converts a portion of the enthalpy of the inlet flow through the engine into electrical current. This reduction in flow enthalpy corresponds to a reduced Mach number at the turbojet inlet so that the engine stays within its design constraints. Furthermore, the generated electrical current may then be used to power aircraft systems or an MHD accelerator positioned downstream of the turbojet. The MHD accelerator operates in reverse of the MHD generator, re-accelerating the exhaust flow from the engine by converting electrical current back into flow enthalpy to increase thrust. Though there has been considerable research into the use of MHD generators to produce electricity for industrial power plants, interest in the technology for flight-weight aerospace applications has developed only recently. In this research, electromagnetic fields coupled with weakly ionzed gases to slow hypersonic airflow were investigated within the confines of an MHD energy-bypass system with the goal of showing that it is possible for an air-breathing engine to transition from takeoff to Mach 7 without carrying a rocket propulsion system along with it. The MHD energy-bypass system was modeled for use on a supersonic turbojet engine. The model included all components envisioned for an MHD energy-bypass system; two preionizers, an MHD generator, and an MHD accelerator. A thermodynamic cycle analysis of the hypothesized MHD energy-bypass system on an existing supersonic turbojet engine was completed. In addition, a detailed thermodynamic, plasmadynamic, and electromagnetic analysis was combined to offer a single, comprehensive model to describe more fully the proper plasma flows and magnetic fields required for successful operation of the MHD energy bypass system. The unique contribution of this research involved modeling the current density, temperature, velocity, pressure, electric field, Hall parameter, and electrical power throughout an annular MHD generator and an annular MHD accelerator taking into account an external magnetic field within a moving flow field, collisions of electrons with neutral particles in an ionized flow field, and collisions of ions with neutral particles in an ionized flow field (ion slip). In previous research, the ion slip term has not been considered. Detailed thermodynamic cycle analysis of an annular MHD generator and an annular MHD accelerator revealed that including the ion slip term to the generalized Ohm's Law decreased the needed magnetic fields and conductivity levels as compared to previous research. For the MHD generator, the needed magnetic fields decreased from 5 T to 3 T for all flight speeds studied (Mach 7, 5, and 3). The conductivity levels required for the ionized airflow within the MHD generator at 3 T decreased from 11 mhos/m to 9 mhos/m for a flight speed of Mach 7 and remained the same for Mach 5 and 3. For the MHD accelerator, the needed magnetic fields decreased from 5 T to 3 T for flight speeds of Mach 7 and 5, and decreased from 3 T to 1.5 T for a flight speed of Mach 3. The conductivity levels required for the ionized airflow within the MHD accelerator (at 3 T) decreased from 2.6 mhos/m to 1.1 mhos/m for a flight speed of Mach 7 and remained the same for Mach 5 and 3. The MHD energy-bypass system model showed that it is possible to expand the operating range of a supersonic jet engine from a maximum of Mach 3.5 to a maximum of Mach 7. The inclusion of ion slip within the analysis further showed that it is possible to 'drive' this system with maximum magnetic fields of 3 T and with maximum conductivity levels of 11 mhos/m. These operating parameters better the previous findings of 5 T and 10 mhos/m, and reveal that taking into account collisions between ions and neutral particles within a weakly ionized flow provides a more realistic model with added benefits of lower magnetic fields and conductivity levels especially at the higher Mach numbers.
Book Synopsis Flow matching results of an MHD energy bypass system on a supersonic turbojet engine using the numerical propulsion system simulation (NPSS) environment by : Theresa L. Benyo
Download or read book Flow matching results of an MHD energy bypass system on a supersonic turbojet engine using the numerical propulsion system simulation (NPSS) environment written by Theresa L. Benyo and published by . This book was released on 2011 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Variable Turbine Area on Subsonic Cruise Performance of Turbojets Designed for Supersonic Application by : Arvid L. Keith
Download or read book Effects of Variable Turbine Area on Subsonic Cruise Performance of Turbojets Designed for Supersonic Application written by Arvid L. Keith and published by . This book was released on 1970 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs by : National Research Council
Download or read book A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs written by National Research Council and published by National Academies Press. This book was released on 2007-01-14 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rocket and air-breathing propulsion systems are the foundation on which planning for future aerospace systems rests. A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs assesses the existing technical base in these areas and examines the future Air Force capabilities the base will be expected to support. This report also defines gaps and recommends where future warfighter capabilities not yet fully defined could be met by current science and technology development plans.
Book Synopsis Magnetohydrodynamic Energy Conversion by : Richard J. Rosa
Download or read book Magnetohydrodynamic Energy Conversion written by Richard J. Rosa and published by . This book was released on 1968 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetogasdynamics and Plasma Dynamics by : Shih-I. Pai
Download or read book Magnetogasdynamics and Plasma Dynamics written by Shih-I. Pai and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the lecture notes which the author gave in a seminar of the same title in the Institut fur theoretische Gasdynamik, D. V. L. e. V., Aachen, Germany, during the academic year of 1957-1958. The subject matter has been rewritten and expanded after the author's return to the University of Maryland. The purpose of this book is to give a theoretical introduction to plasma dynamics and magnetogasdynamics from the gasdynamic point of view. Attention is given to the basic assumptions and the formulation of the theory of the flow problems of a plasma, an ionized gas, as well as to the various methods of solving these problems. Since plasma dynamics is still in a developing stage, the author hopes that this book _may furnish the readers some basic elements in the theory of plasma -dynamics so that they may find it useful for further study and research in this new field. After the introduction in which the scope of plasma. dynamics is briefly discussed, the fundamental equations of plasma dynamics from the macro scopic point of view, i. e., the theory of continuum has been analyzed, in detail in chapters IT to IV, including many simplified cases sUQh as m,agneto gasdynamics, magnetohydrodynamics, electromaguetodynamics, radiation magnetogasdynamics etc. In chapter V, the important parameters and their range of applicatIons have been treated. The parameters are useful in the correlation of experi mental results.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Fundamentals of Aircraft and Rocket Propulsion by : Ahmed F. El-Sayed
Download or read book Fundamentals of Aircraft and Rocket Propulsion written by Ahmed F. El-Sayed and published by Springer. This book was released on 2016-05-25 with total page 1025 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive basics-to-advanced course in an aero-thermal science vital to the design of engines for either type of craft. The text classifies engines powering aircraft and single/multi-stage rockets, and derives performance parameters for both from basic aerodynamics and thermodynamics laws. Each type of engine is analyzed for optimum performance goals, and mission-appropriate engines selection is explained. Fundamentals of Aircraft and Rocket Propulsion provides information about and analyses of: thermodynamic cycles of shaft engines (piston, turboprop, turboshaft and propfan); jet engines (pulsejet, pulse detonation engine, ramjet, scramjet, turbojet and turbofan); chemical and non-chemical rocket engines; conceptual design of modular rocket engines (combustor, nozzle and turbopumps); and conceptual design of different modules of aero-engines in their design and off-design state. Aimed at graduate and final-year undergraduate students, this textbook provides a thorough grounding in the history and classification of both aircraft and rocket engines, important design features of all the engines detailed, and particular consideration of special aircraft such as unmanned aerial and short/vertical takeoff and landing aircraft. End-of-chapter exercises make this a valuable student resource, and the provision of a downloadable solutions manual will be of further benefit for course instructors.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Scramjet Engine by : Corin Segal
Download or read book The Scramjet Engine written by Corin Segal and published by Cambridge University Press. This book was released on 2009-06-22 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demand for high-speed propulsion has renewed development of the supersonic combustion ramjet engine (Scramjet engine) for hypersonic flight applications.
Book Synopsis Future Spacecraft Propulsion Systems by : Paul A. Czysz
Download or read book Future Spacecraft Propulsion Systems written by Paul A. Czysz and published by Springer Science & Business Media. This book was released on 2006-09-19 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: An understandable perspective on the types of space propulsion systems necessary to enable low-cost space flights to Earth orbit and to the Moon and the future developments necessary for exploration of the solar system and beyond to the stars.
Book Synopsis Engineering Thermofluids by : Mahmoud Massoud
Download or read book Engineering Thermofluids written by Mahmoud Massoud and published by Springer Science & Business Media. This book was released on 2005-09-16 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermofluids, while a relatively modern term, is applied to the well-established field of thermal sciences, which is comprised of various intertwined disciplines. Thus mass, momentum, and heat transfer constitute the fundamentals of th- mofluids. This book discusses thermofluids in the context of thermodynamics, single- and two-phase flow, as well as heat transfer associated with single- and two-phase flows. Traditionally, the field of thermal sciences is taught in univer- ties by requiring students to study engineering thermodynamics, fluid mechanics, and heat transfer, in that order. In graduate school, these topics are discussed at more advanced levels. In recent years, however, there have been attempts to in- grate these topics through a unified approach. This approach makes sense as thermal design of widely varied systems ranging from hair dryers to semicond- tor chips to jet engines to nuclear power plants is based on the conservation eq- tions of mass, momentum, angular momentum, energy, and the second law of thermodynamics. While integrating these topics has recently gained popularity, it is hardly a new approach. For example, Bird, Stewart, and Lightfoot in Transport Phenomena, Rohsenow and Choi in Heat, Mass, and Momentum Transfer, El- Wakil, in Nuclear Heat Transport, and Todreas and Kazimi in Nuclear Systems have pursued a similar approach. These books, however, have been designed for advanced graduate level courses. More recently, undergraduate books using an - tegral approach are appearing.
Book Synopsis Atmospheric and Space Flight Dynamics by : Ashish Tewari
Download or read book Atmospheric and Space Flight Dynamics written by Ashish Tewari and published by Springer Science & Business Media. This book was released on 2007-11-15 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a unified presentation that does not discriminate between atmospheric and space flight. It demonstrates that the two disciplines have evolved from the same set of physical principles and introduces a broad range of critical concepts in an accessible, yet mathematically rigorous presentation. The book presents many MATLAB and Simulink-based numerical examples and real-world simulations. Replete with illustrations, end-of-chapter exercises, and selected solutions, the work is primarily useful as a textbook for advanced undergraduate and beginning graduate-level students.
Book Synopsis Fundamentals of Renewable Energy Processes by : Aldo Vieira da Rosa
Download or read book Fundamentals of Renewable Energy Processes written by Aldo Vieira da Rosa and published by Academic Press. This book was released on 2009-05-07 with total page 865 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are hearing a LOT about renewable energy these days! But unlike most available resources on alternative energy that focus on politics and economic impacts, da Rosa's practical guide, Fundamentals of Renewable Energy Processes, is dedicated to explaining the scientific and technological principles and processes that enable energy production from safe, renewable, clean sources. Advances in the renewable energy sphere are proceeding with an unprecedented speed, and in order for the world's alarming energy challenges to be solved, solid, up-to-date resources addressing the technical aspects of renewables are essential. This new, updated 2e of da Rosa's successful book continues to give readers all the background they need to gain a thorough understanding of the most popular types of renewable energy—hydrogen, solar power, biomass, wind power, and hydropower—from the ground up. The latest advances in all these technologies are given particular attention, and are carefully contextualized to help professionals and students grasp the "whys and hows" behind these breakthroughs. Discusses how and why the most popular renewable energy sources work, including wind, solar, bio and hydrogen Provides a thorough technical grounding for all professionals and students investigating renewable energy The new 2e of a highly regarded guide written by an internationally renowned pioneer
Book Synopsis History of Shock Waves, Explosions and Impact by : Peter O. K. Krehl
Download or read book History of Shock Waves, Explosions and Impact written by Peter O. K. Krehl and published by Springer Science & Business Media. This book was released on 2008-09-24 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique and encyclopedic reference work describes the evolution of the physics of modern shock wave and detonation from the earlier and classical percussion. The history of this complex process is first reviewed in a general survey. Subsequently, the subject is treated in more detail and the book is richly illustrated in the form of a picture gallery. This book is ideal for everyone professionally interested in shock wave phenomena.
