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Author : R. J. Litchford
Publisher : Unknown
Page : 48 pages
File Size : 49,6 Mb
Release : 2003
Category : Electromagnetism
ISBN : NASA:31769000452360
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 58 pages
File Size : 46,8 Mb
Release : 2018-06
Category : Electronic
ISBN : 1720601461
The prospects for realizing an integrated pulse detonation propulsion and magnetohydrodynamic (MHD) power system are examined. First, energy requirements for direct detonation initiation of various fuel-oxygen and fuel-air mixtures are deduced from available experimental data and theoretical models. Second, the pumping power requirements for effective chamber scavenging are examined through the introduction of a scavenging ratio parameter and a scavenging efficiency parameter. A series of laboratory experiments were carried out to investigate the basic engineering performance characteristics of a pulse detonation-driven MHD electric power generator. In these experiments, stoichiometric oxy-acetylene mixtures seeded with a cesium hydroxide/methanol spray were detonated at atmospheric pressure in a 1-m-long tube having an i.d. of 2.54 cm. Experiments with a plasma diagnostic channel attached to the end of the tube confirmed the attainment of detonation conditions (p2/p1 approximately 34 and D approximately 2,400 m/sec) and enabled the direct measurement of current density and electrical conductivity (approximately = 6 S/m) behind the detonation wave front, In a second set of experiments, a 30-cm-long continuous electrode Faraday channel, having a height of 2.54 cm and a width of 2 cm, was attached to the end of the tube using an area transition duct. The Faraday channel was inserted in applied magnetic fields of 0.6 and 0.95 T, and the electrodes were connected to an active loading circuit to characterize power extraction dependence on load impedance while also simulating higher effective magnetic induction. The experiments indicated peak power extraction at a load impedance between 5 and 10 Omega. The measured power density was in reasonable agreement with a simple electrodynamic model incorporating a correction for near-electrode potential losses. The time-resolved thrust characteristics of the system were also measured, and it was found that the NM interaction exer
Author : R. J. Litchford
Publisher : Unknown
Page : 60 pages
File Size : 42,9 Mb
Release : 2001
Category : Electronic
ISBN : NASA:31769000451776
Author : R. J. Litchford
Publisher : Unknown
Page : 52 pages
File Size : 46,9 Mb
Release : 2001
Category : Detonation waves
ISBN : NASA:31769000451982
Author : Anonim
Publisher : Unknown
Page : 732 pages
File Size : 44,5 Mb
Release : 2006
Category : Aeronautics
ISBN : STANFORD:36105122654150
Author : Fouad Sabry
Publisher : One Billion Knowledgeable
Page : 349 pages
File Size : 47,6 Mb
Release : 2021-10-14
Category : Technology & Engineering
ISBN : PKEY:6610000312573
What Is Pulse Detonation Engine A pulse detonation engine (PDE) is a type of propulsion system that uses detonation waves to combust the fuel and oxidizer mixture. The engine is pulsed because the mixture must be renewed in the combustion chamber between each detonation wave and the next. Theoretically, a PDE can operate from subsonic up to a hypersonic flight speed of roughly Mach 5. An ideal PDE design can have a thermodynamic efficiency higher than other designs like turbojets and turbofans because a detonation wave rapidly compresses the mixture and adds heat at constant volume. Consequently, moving parts like compressor spools are not necessarily required in the engine, which could significantly reduce overall weight and cost. PDEs have been considered for propulsion since 1940. Key issues for further development include fast and efficient mixing of the fuel and oxidizer, the prevention of autoignition, and integration with an inlet and nozzle. To date, no practical PDE has been put into production, but several testbed engines have been built and one was successfully integrated into a low-speed demonstration aircraft that flew in sustained PDE powered flight in 2008. In June 2008, the Defense Advanced Research Projects Agency (DARPA) unveiled Blackswift, which was intended to use this technology to reach speeds of up to Mach 6 How You Will Benefit (I) Insights, and validations about the following topics: Chapter 1: Pulse Detonation Engine Chapter 2: Nuclear Pulse Propulsion Chapter 3: Rotating Detonation Engine Chapter 4: AIMStar Chapter 5: Antimatter-catalyzed nuclear pulse propulsion Chapter 6: Antimatter rocket Chapter 7: Nuclear electric rocket Chapter 8: Nuclear power in space Chapter 9: Nuclear propulsion Chapter 10: Nuclear thermal rocket Chapter 11: Project Pluto Chapter 12: Fission-fragment rocket (II) Answering the public top questions about pulse detonation engine. (III) Real world examples for the usage of pulse detonation engine in many fields. (IV) 17 appendices to explain, briefly, 266 emerging technology in each industry to have 360-degree full understanding of pulse detonation engine' technologies. Who This Book Is For Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of pulse detonation engine.
Author : Anonim
Publisher : Unknown
Page : 912 pages
File Size : 49,9 Mb
Release : 2024-07-02
Category : Science
ISBN : CORNELL:31924057185294
Author : Dale Brown
Publisher : Harper Collins
Page : 576 pages
File Size : 42,7 Mb
Release : 2009-10-13
Category : Fiction
ISBN : 9780061752940
Moving from the Pentagon to the Middle East, filled with intrigue, adventure, and danger, this is the latest adrenaline-pumped military thriller from the New York Times bestselling master When a military coup in Iran leads to a crackdown on religious jihadists, it seems as if a new era is dawning in the Middle East, especially when the new leader, General Buzhazi, seeks to normalize relations with both America and Israel. But the Iranians are not really interested in peace . . . In the guise of pursuing and destroying Islamic militants, Buzhazi is planting thousands of Iranian Pasdaran special-ops troops throughout the oil-rich Kurdish region of northern Iraq, and in a lightning quick operation brutally occupies the territory.Unveiling its new military might, it invades northern Iraq, catching the world—and America—completely off-guard. To regain control of the region, America will rely on her own ultimate weapon: Patrick McLanahan and his team of special high-tech operatives. Filled with the latest cutting-edge weaponry, geopolitical intrigue, high-flying suspense, and a colorful cast of characters, Untitled promises to be one of New York Times bestselling author Dale Brown’s best.
Author : Anonim
Publisher : Unknown
Page : 490 pages
File Size : 47,7 Mb
Release : 1999
Category : Lasers
ISBN : PSU:000046760821
Author : Anonim
Publisher : Unknown
Page : 56 pages
File Size : 53,9 Mb
Release : 1986
Category : Electronic
ISBN : NASA:31769000675465
Author : Joseph J. S. Shang,Sergey T. Surzhikov
Publisher : Cambridge University Press
Page : 403 pages
File Size : 55,9 Mb
Release : 2018-06-21
Category : Science
ISBN : 9781108418973
Provides a comprehensive review and usable problem-solving techniques for aerospace engineering plasma applications.
Author : Anonim
Publisher : Unknown
Page : 592 pages
File Size : 48,9 Mb
Release : 2003
Category : Aeronautics
ISBN : PSU:000051416676
Author : Defense Documentation Center (U.S.)
Publisher : Unknown
Page : 290 pages
File Size : 51,6 Mb
Release : 1962
Category : Magnetohydrodynamics
ISBN : SRLF:D0000733204
Author : Anonim
Publisher : Unknown
Page : 1572 pages
File Size : 47,6 Mb
Release : 1992
Category : Aeronautics
ISBN : UIUC:30112078757413
Author : Larry L. Altgilbers
Publisher : World Scientific
Page : 597 pages
File Size : 52,6 Mb
Release : 2011
Category : Technology & Engineering
ISBN : 9781848163225
Explosive pulsed power generators are devices that either convert the chemical energy stored in explosives into electrical energy or use the shock waves generated by explosives to release energy stored in ferroelectric and ferromagnetic materials. The objective of this book is to acquaint the reader with the principles of operation of explosive generators and to provide details on how to design, build, and test three types of generators: flux compression, ferroelectric, and ferromagnetic generators, which are the most developed and the most near term for practical applications. Containing a considerable amount of new experimental data that has been collected by the authors, this is the first book that treats all three types of explosive pulsed power generators. In addition, there is a brief introduction to a fourth type ix explosive generator called a moving magnet generator. As practical applications for these generators evolve, students, scientists, and engineers will have access to the results of a considerable body of experience gained by almost 10 years of intense research and development by the authors.