Download or read book Ignition Dynamics of Boron Particles in a Shock Tube written by Thomas J. Rood and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ignition of Boron Particles in a Shock Tube Using Emission Spectroscopy written by Martin John Spalding and published by . This book was released on 1996 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shock Tube Ignition and Combustion of Boron Particles in Oxygen with Fluorine Compounds written by Stephen Robert Pirman and published by . This book was released on 1994 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Boron Particle Ignition and Combustion in a Shock Tube Using Time resolved Spectroscopy written by Martin John Spalding and published by . This book was released on 2000 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Shock Tube Study of the Ignition Limit of Boron Particles written by Robert T. Uda (1LT, USAF.) and published by . This book was released on 1968 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Shock Tube Study of the Ignition Limit of Boron Particles written by Robert T. Uda and published by . This book was released on 1968 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: A shock tube study was conducted to determine the ignition limit of clouds of boron particles. The ignition limit is an experimentally determined curve, plotted on temperature-pressure coordinates, separating the ignition and no ignition zones. A 3-inch inside diameter constant area shock tube employing a helium/air gas system was used for igniting the boron particles. The particles were ignited in the high temperature region behind the reflected shock wave. The boron samples used were 30-50 micron diameter agglomerates (1-2 micron primary particles) and 0.015 micron diameter particles. Ignition delay time of 0.015 micron particles was also obtained. (Author).
Download or read book Shock Tube Ignition of Boron Particles in Oxygen with Infrared Detection of Boron Oxide Removal written by Thomas John Rood and published by . This book was released on 1997 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shock Tube Studies of Boron Particle Ignition written by Harold F Chambers (Jr) and published by . This book was released on 1974 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: A shock tube technique has been developed to allow the separation of heatup from ignition delay time for a metal particle. An analytical model was formulated to predict the position, velocity and temperature of a boron particle in the shock tube as a function of time. The model was used to determine ignition delay time and particle temperature at ignition. Ignition delay times were measured for boron particles of nominally one micron diameter. Particle size and shape diagnostics were conducted by means of scanning electron microscope and floatation tests. Shock tube experiments were conducted using mixtures of ten, twenty, and fifty percent oxygen in argon. Particle ignition occurred over a range of 2200K to 3600K and 100 to 400 psia. Ignition delay was shown to vary directly with particle diameter and inversely with gas temperature and oxidizer pressure. The data were used to calculate an activation energy for the boron ignition reaction. Particle temperature at ignition was calculated. (Modified author abstract).
Download or read book Boron Ignition Limit Curve as Determined by a Shock Tube Study written by James T. Jones and published by . This book was released on 1969 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A shock tube was employed to establish ignition limit curves for two particle sizes of boron. The particles were ignited in air by the temperature rise behind the reflected shock wave. Results show that the ignition temperature for .015 micron particles increases linearly with pressure from 1130 K at 6 atm to 1170 K at 130 atm. For 30-50 micron agglomerated particles (1-2 micron primary size) the ignition temperature decreases initially to 1390 K at 20 atm but then increases linearly to 1420 K at 130 atm. In addition, preliminary information was obtained on ignition delay time for both particles. (Author).
Download or read book Boron Ignition Limit Curve as Determined by a Shock Tube Study written by James T. Jones (CAPT, USAF.) and published by . This book was released on 1969 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Pressure Boron Ignition and Combustion written by and published by . This book was released on 1996 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high potential energy release of boron makes it a prime candidate for a high enthalpy fuel or as a fuel additive to solid propellant formulations, as well as a prospective additive for tailoring energy release rates of explosive grains. The problem of long ignition delays at atmospheric and lower pressures, caused by a combination of factors which include the necessity to remove a combustion-retarding oxide layer from the particles, a high vaporization temperature for the pure boron substrate, and slow condensation kinetics, have generally precluded the use of boron for energetic fuel applications at these pressures. This report summarizes experiments which measure an order of magnitude shorter ignition delays than previously published 1 atm data, for pure and reduced oxygen and oxygen mixtures with water vapor and fluorine compounds (H, HF) over 8.5 to 34 atm and 2000 to 3000 K. Ignition delays in the 300 to 500 microsecond range are observed in a shock tube, decreasing with increasing temperature, and increasing twofold when oxygen concentrations are reduced to 5% in Ar. Fluorine, from dissociated 1% SF6 in O2, is seen to decrease ignition delays by a factor of 1.7 compared to pure oxygen. A combustion chamber is used at a peak pressure of 157 atm and temperature in excess of 2800 K to study ignition delays at higher pressures than are possible in the shock tube. Endwall emission spectra of BO2 are recorded for comparison with boron ignition models.
Download or read book Boron Based Fuel Rich Propellant written by WeiQiang Pang and published by CRC Press. This book was released on 2019-04-09 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boron-Based Fuel-Rich Solid Rocket Propellant Technology is a professional book that systematically introduces the latest research progress for boron-based fuel-rich solid propellants. It covers surface modifications, coating and agglomerating techniques, granulation, and characterization of amorphous boron powders, and its application to fuel-rich solid rocket propellants. Technologies for controlling the processing methods and combustion performance of fuel-rich propellants are examined, and the book concludes with a summary of the research progress in boron-based fuel-rich solid propellants and a look forward to the foreseeable development trends of military applications.
Download or read book Applications of Turbulent and Multiphase Combustion written by Kenneth Kuan-yun Kuo and published by John Wiley & Sons. This book was released on 2012-05-01 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hands-on, integrated approach to solving combustion problems in diverse areas An understanding of turbulence, combustion, and multiphase reacting flows is essential for engineers and scientists in many industries, including power genera-tion, jet and rocket propulsion, pollution control, fire prevention and safety, and material processing. This book offers a highly practical discussion of burning behavior and chemical processes occurring in diverse materials, arming readers with the tools they need to solve the most complex combustion problems facing the scientific community today. The second of a two-volume work, Applications of Turbulent and Multiphase Combustion expands on topics involving laminar flames from Professor Kuo's bestselling book Principles of Combustion, Second Edition, then builds upon the theory discussed in the companion volume Fundamentals of Turbulent and Multiphase Combustion to address in detail cutting-edge experimental techniques and applications not covered anywhere else. Special features of this book include: Coverage of advanced applications such as solid propellants, burning behavior, and chemical boundary layer flows A multiphase systems approach discussing basic concepts before moving to higher-level applications A large number of practical examples gleaned from the authors' experience along with problems and a solutions manual Engineers and researchers in chemical and mechanical engineering and materials science will find Applications of Turbulent and Multiphase Combustion an indispensable guide for upgrading their skills and keeping up with this rapidly evolving area. It is also an excellent resource for students and professionals in mechanical, chemical, and aerospace engineering.
Download or read book A Shock Tube Study of Boron Particle Motion written by Channing W. Posson and published by . This book was released on 1970 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 33rd AIAA ASME SAE ASEE Joint Propulsion Conference Exhibit written by and published by . This book was released on 1997 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of Shock Waves Explosions and Detonations written by J. Raymond Bowen and published by . This book was released on 1984 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
