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Particle Sizing In A Fuel Rich Ramjet Combustor
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Book Synopsis Particle Sizing in a Fuel-Rich Ramjet Combustor by : R. Turner
Download or read book Particle Sizing in a Fuel-Rich Ramjet Combustor written by R. Turner and published by . This book was released on 1983 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: A laser Doppler velocimeter (LDV) has been used to measure the size, concentration, and velocity of individual particles having diameters ranging from 3 to greater than 100 micron and having velocities of 600 to 1400 m/s in the fuel-rich exhaust of a ramjet combustor. The visibility of the LDV output was used to measure particle diameters ranging from 3 to under 30 micron and the mean scattered amplitude was used to measure particles ranging from 20 to over 100 micron. The attenuation of one LDV beam provided information on the total amount of material present. Measurements were made along the flow field of a combustor operating at 35 psia, an inlet temperature of 650 to 850 K, and fuel equivalence ratios (ER) of 1.6 and 2.6. Typically, at a point one-half inch from the nozzle and for an ER of 2.6, the average particle velocity is 800 m/s, the average particle size is 50 micron, and the particle density is 250 particles per cubic centimeter. The large particles appear to be unburnt fuel. (Author).
Book Synopsis Metallized Fuel Particle Size Study in a Solid Fuel Ramjet by : James Allen Nabity
Download or read book Metallized Fuel Particle Size Study in a Solid Fuel Ramjet written by James Allen Nabity and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle size measurements were obtained at the grain exit and nozzle entrance in a solid fuel ramjet combustor using a boron based fuel. The particle size distributions at the aft end of the fuel grain were generally quadra-modal, with mode peaks at 2, 4,15, and 25 - 45 microns. At the nozzle entrance the distributions were tri-modal, due to the complete oxidation of the 2 micron particles. Sauter mean diameter and the size of the largest agglomerates increased with increasing equivalence ratio (or grain length), indicating that the longer grains result in more surface agglomeration. Combustion efficiency increased with equivalence ratio. A direct correlation of particle size alone with combustion efficiency was not obvious and may require an accurate measurement of particle concentration. Keywords: Integral rocket ramjet engines; Rocket propellant grains; Solid fuel ramjet engines; Combustion; Laser particle measurement; Metallized rocket fuels. Theses. (edc).
Book Synopsis Metallized Fuel Particle Size Study in a Solid Fuel Ramjet by : James Allen Nabity
Download or read book Metallized Fuel Particle Size Study in a Solid Fuel Ramjet written by James Allen Nabity and published by . This book was released on 1989 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle size measurements were obtained at the grain exit and nozzle entrance in a solid fuel ramjet combustor using a boron based fuel. The particle size distributions at the aft end of the fuel grain were generally quadra-modal, with mode peaks at 2, 4,15, and 25 - 45 microns. At the nozzle entrance the distributions were tri-modal, due to the complete oxidation of the 2 micron particles. Sauter mean diameter and the size of the largest agglomerates increased with increasing equivalence ratio (or grain length), indicating that the longer grains result in more surface agglomeration. Combustion efficiency increased with equivalence ratio. A direct correlation of particle size alone with combustion efficiency was not obvious and may require an accurate measurement of particle concentration. Keywords: Integral rocket ramjet engines; Rocket propellant grains; Solid fuel ramjet engines; Combustion; Laser particle measurement; Metallized rocket fuels. Theses. (edc).
Book Synopsis Boron-Based Fuel-Rich Propellant by : WeiQiang Pang
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 323 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.
Book Synopsis Holographic Particle Sizing in Solid Fuel Ramjets by : Robert Paul Paty
Download or read book Holographic Particle Sizing in Solid Fuel Ramjets written by Robert Paul Paty and published by . This book was released on 1988 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was conducted to determine the suitability of a holographic technique as a diagnostic tool for metallized fuel combustion in a two-dimensional solid fuel ramjet. The highly metallized fuels were burned under conditions similar to actual flight conditions. If found suitable, the objective was to produce a three-dimensional image of a volume in the boundary layer above the fuel surface, and to determine the particle size distribution in that volume. This distribution could be used to validate current models which must assume particle size, and could lead to better estimates of fuel regression rates and combustion efficiencies. Once the conditions for sustained combustion were determined, the technique was successfully demonstrated, even in the presence of large amounts of smoke. Holograms were obtained at two different chamber pressures for each of the fuels. However, current resolution limits of the technique are not sufficient to reveal the vast majority of the particles in the combustor. Keywords: Solid fuel ramjet, Boron combustion, Metallized fuels, Ramjet, Holography. (kt).
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 1995 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1984 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1992 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
Book Synopsis Nanotechnology in Environmental Science, 2 Volumes by : Chaudhery Mustansar Hussain
Download or read book Nanotechnology in Environmental Science, 2 Volumes written by Chaudhery Mustansar Hussain and published by John Wiley & Sons. This book was released on 2018-05-29 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of the current state of nanotechnology-based devices with applications in environmental science, focusing on nanomaterials and polymer nanocomposites. The handbook pays special attention to those nanotechnology-based approaches that promise easier, faster and cheaper processes in environmental monitoring and remediation. Furthermore, it presents up-to-date information on the economics, toxicity and regulations related to nanotechnology in detail. The book closes with a look at the role of nanotechnology for a green and sustainable future. With its coverage of existing and soon-to-be-realized devices this is an indispensable reference for both academic and corporate R&D.
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Book Synopsis Report by : United States. National Advisory Committee for Aeronautics
Download or read book Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1958 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report of the National Advisory Committee for Aeronautics by : United States. National Advisory Committee for Aeronautics
Download or read book Annual Report of the National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by and published by . This book was released on 1958 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Technologies in Flow Dynamics and Combustion in Propulsion and Power by : Lei Luo
Download or read book Advanced Technologies in Flow Dynamics and Combustion in Propulsion and Power written by Lei Luo and published by Frontiers Media SA. This book was released on 2022-08-05 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the Drag of Various Axially Symmetric Nose Shapes of Fineness Ratio 3 for Mach Numbers from 1.24 to 7.4 by : C. H. Wilts
Download or read book Investigation of the Drag of Various Axially Symmetric Nose Shapes of Fineness Ratio 3 for Mach Numbers from 1.24 to 7.4 written by C. H. Wilts and published by . This book was released on 1958 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aeronautical Engineering: A Cumulative Index to the 1984 Issues of the Continuing Bibliography by :
Download or read book Aeronautical Engineering: A Cumulative Index to the 1984 Issues of the Continuing Bibliography written by and published by . This book was released on 1985 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ei Engineering Conference Index: pt. 1. Civil, environmental, and geological engineering by :
Download or read book Ei Engineering Conference Index: pt. 1. Civil, environmental, and geological engineering written by and published by . This book was released on 1985 with total page 1412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
