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A Study Of Gas Phase Chemistry Of Solid Propellants Using A Microprobe Mass Spectrometer System Results For Rdx Blx 9 Xm 39 M9 And Ja 2
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Book Synopsis A Study of Gas Phase Chemistry of Solid Propellants Using a Microprobe Mass Spectrometer System. Results for RDX, BLX-9, XM-39, M9 and JA-2 by :
Download or read book A Study of Gas Phase Chemistry of Solid Propellants Using a Microprobe Mass Spectrometer System. Results for RDX, BLX-9, XM-39, M9 and JA-2 written by and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research program is designed to address the critical need for data on the gas-phase chemistry of solid propellants through the development and application of a microprobe mass spectrometer (MPMS) system. The MPMS system is being used to study the gas-phase chemistry occurring above solid propellant ingredients and actual solid propellants when they are heated and/or ignited by the heat flux from a CO2 laser. In addition to the MPMS system, direct and Schlieren photography are being used to study the flame structure and twenty- five micron thermocouples are being used to measure the gas-phase temperature profile. During the last year nearly fifty tests were performed with neat RDX as well as with composite, XM-39 and BLX-9, and double-base propellants, M-9 and JA-2. Measurements of gas-phase species and temperature profiles for neat RDX and tow RDX composite propellants show that while the chemical species detected are similar, the gas-phase structure for these propellants is significantly different. For incident laser energy fluxes above 100 W/sq cm, all three propellants exhibited a primary flame caused by the reaction of CH2O and NO2. The mole fraction of CH2O at or near the sample surface was approximately 0.20 for RDX and XM39 but was about 0.33 for BLX9 due to the addition of CH2O from the decomposition of the BTTN energetic plasticizer. The primary flame products consisted of significant amounts of NO for all three propellants and CO for the composites along with smaller amounts of H2O for RDX and BLX9, CO2 for RDX and XM39, and h2 for RDX.
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 1992 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Gas Phase Chemistry of Solid Propellants Using a Microprobe Mass Spectrometer (MPMS) System: Preliminary Results for Solid Fuels (HTPB/Zecorez and BAMO/NMMO) Single-Base Propellant (M10) and an RDX-Based Propellant (BLX-9). by :
Download or read book A Study of the Gas Phase Chemistry of Solid Propellants Using a Microprobe Mass Spectrometer (MPMS) System: Preliminary Results for Solid Fuels (HTPB/Zecorez and BAMO/NMMO) Single-Base Propellant (M10) and an RDX-Based Propellant (BLX-9). written by and published by . This book was released on 1991 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed knowledge of the gas-phase reactions which occur during propellant ignition and combustion are required to understand and model these processes. If detailed models were available, modification of propellant formulations for improved combustion behavior could be achieved with much less trial-and-error testing. Furthermore, detailed models could be used to generate simplified kinetics schemes for use in propellant models. The present research program, centers around the development and application of a microprobe, mass spectrometer (MPMS) system to study the gas phase chemistry of solid propellant ingredients and solid propellants during heating by a CO2 laser and during steady combustion. The MPMS system uses quartz microprobes with orifice sizes of 100 microns or less to withdraw gases from the region above the sample material. Through a two stage pumping system, the sample is delivered to a quadrupole mass spectrometer for analysis. Sampling is continuous throughout the combustion event so that species profiles of stable intermediates above the sample are obtained during the experiments. In addition to the MPMS system, existing experimental methods to be used in the work include high speed direct photography, high speed schlieren photography, microthermocouple probes and photodiodes (for first visible light).
Book Synopsis A Study of the Gas Phase Chemistry of Solid Propellants Using a Microprobe Mass Spectrometer (MPMS) System: Initial Development of the MPMS System by :
Download or read book A Study of the Gas Phase Chemistry of Solid Propellants Using a Microprobe Mass Spectrometer (MPMS) System: Initial Development of the MPMS System written by and published by . This book was released on 1990 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed knowledge of the gas-phase reactions which occur during propellant ignition and combustion are required to understand and model these processes. If detailed models were available, modification of propellant formulations for improved combustion behavior could be achieved with much less trail-and-error testing. Furthermore, detailed models could be used to generate simplified kinetics schemes for use in propellant models. Without a firm basis for these simplified kinetic schemes, the kinetic parameters are often adjusted to fit burning rate and ignition data; thus the propellant models are reduced to sophisticated curve fits to experimental data. The present research program, centers around the development and application of a microprobe, mass spectrometer (MPMS) system to study the gas phase chemistry of solid propellant ingredients and solid propellants during heating by a CO2 laser and during steady combustion. The MPMS system uses quartz microprobes with orifice sizes of 100 microns or less to withdraw gases from the region above the sample material. Through a two stage pumping system, the sample is delivered to a quadrupole mass spectrometer for analysis. Sampling is continuous throughout the combustion event so that species profiles of stable intermediates above the sample are obtained during the experiments.
Download or read book EPA 600/2 written by and published by . This book was released on 1972 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Gas-Phase Chemistry of Solid Propellant Ingredients Using CO2 Laser Heating by :
Download or read book A Study of the Gas-Phase Chemistry of Solid Propellant Ingredients Using CO2 Laser Heating written by and published by . This book was released on 1991 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research program is designed to address the critical need for data on the gas phase chemistry of solid propellants through the development and application of a Microprobe Mass Spectrometer (MPMS) system. The MPMS systems is being used to study the gas-phase chemistry occurring above solid propellant ingredients and actual solid propellants when they are heated and/or ignited by the heat flux from a Carbon dioxide laser. Currently the MPMS system uses quartz microprobes with orifice sizes of twenty microns which results in a spatial resolution of approximately 100 microns. In addition to the MPMS system, direct and Schlieren photography are being used to study the flame structure and twenty-five micron thermocouples are being used to measure the gas-phase temperature profile. The specific goal of this research is to obtain detailed species profiles of the major reacting species above the surface of the individual propellant ingredients and actual propellants in order to obtain an improved understanding of the controlling chemical processes and of the interactions of binders and oxidizers in heterogeneous propellants. In the testing both heterogeneous and homogeneous propellants are being studied as well as their individual ingredients.
Book Synopsis A Study of Solid Propellants Using a Microprobe Mass Spectrometer System by :
Download or read book A Study of Solid Propellants Using a Microprobe Mass Spectrometer System written by and published by . This book was released on 1993 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this work is to determine the chemical mechanisms of solid propellant ignition and deflagration with an emphasis on the decomposition of individual propellant ingredients and on the gas phase reactions of the products of decomposition. A quadrupole mass spectrometer system using quartz microprobes measures species profiles above the surface of the sample during CO2 laser induced pyrolysis or during laser assisted deflagration of the sample. In addition microthermocouples are used to measure the surface temperature and gas phase temperatures during testing. To complement the experimental studies, chemical kinetic models produced by other researchers are used to model some of the data obtained. jg p.4.
Download or read book Yvain written by Chretien de Troyes and published by Yale University Press. This book was released on 1987-09-10 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: A twelfth-century poem by the creator of the Arthurian romance describes the courageous exploits and triumphs of a brave lord who tries to win back his deserted wife's love
Download or read book Air Pollution Translations written by and published by . This book was released on 1969 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Health Effects Research Series by :
Download or read book Environmental Health Effects Research Series written by and published by . This book was released on 1980 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Charles Pettigrew, First Bishop-elect of the North Carolina Episcopal Church by : Bennett H Wall
Download or read book Charles Pettigrew, First Bishop-elect of the North Carolina Episcopal Church written by Bennett H Wall and published by Hassell Street Press. This book was released on 2021-09-10 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Annual Research Progress Report by :
Download or read book Annual Research Progress Report written by and published by . This book was released on 1979 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Condensed-Phase Processes During Solid Propellant Combustion. Part 2: Chemical and Microscopic Examination of Conductively Quenched Samples of RDX, XM39, JA2, M30, and HMX-Binder Compositions by :
Download or read book Condensed-Phase Processes During Solid Propellant Combustion. Part 2: Chemical and Microscopic Examination of Conductively Quenched Samples of RDX, XM39, JA2, M30, and HMX-Binder Compositions written by and published by . This book was released on 1992 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: Burning propellant samples were quenched, and the burned surfaces were examined microscopically and by chemical analysis. Studies are in progress on a series of propellants including XM39, M30, JA2, RDX, and HMX-polyester compositions. The results to date are consistent with the idea that at least at low pressures (below 2.0 MPa), a liquid layer forms during combustion of most of the propellants, with the possible exception of JA2; scanning electron microscope examination shows the existence of a liquid layer but does not provide evidence of degradation below this layer. The effect of composition and pressure on this liquid layer is discussed. Further gas chromatography mass spectrometry analysis confirms our earlier result that at least in the case of XM39, the stabilizer is depleted considerably in the surface layers, presumably by reaction with nitrogen oxides formed by decomposition of RDX and NC. Further high performance liquid chromatography results confirm our earlier result that for XM39, HMX2, and RDX (which contain the cyclic nitramines HMX and RDX), there is a significant increase in concentration of the mechanistically significant nitrosamines MRDX and DRDX over the very small amounts possibly present as impurities In RDX and HMX. FTIR-PAS results provide evidence for condensed-phase reaction in M30 and JA2.
Download or read book SAM-TR. written by and published by . This book was released on 1970-03 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Royal Society of Chemistry (Great Britain) Publisher :Royal Society of Chemistry ISBN 13 :1849731942 Total Pages :247 pages Book Rating :4.8/5 (497 download)
Book Synopsis Nuclear Power and the Environment by : Royal Society of Chemistry (Great Britain)
Download or read book Nuclear Power and the Environment written by Royal Society of Chemistry (Great Britain) and published by Royal Society of Chemistry. This book was released on 2011 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the political and social context for nuclear power generation, the nuclear fuel cycles and their implications for the environment.
Book Synopsis Organochlorine Insecticides by : F. Moriarty
Download or read book Organochlorine Insecticides written by F. Moriarty and published by . This book was released on 1975 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monitoring persistent organic pollhitants; exposure and residues; variationin the intake and elimination of pollutants; the role of the thy roid in the production of sublethal effec by organochlorine insecticides and polychlorine insecticides on amimal populations; persistent percides an economic and legal analysis.
