Download or read book QUENCHING OF SOLID PROPELLANT COMBUSTION written by and published by . This book was released on 1970 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a transient combustion model and its use in describing the quenching of burning solid propellants. The model combines the transient combustion model of Dennison and Baum with the empirically determined steady state burning rate relationship. Comparison with experiment shows that the model correctly describes the quenching process and also encompasses several effects that were previously unexplained.
Download or read book Nonsteady Burning and Combustion Stability of Solid Propellants written by Luigi De Luca and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 1992 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonsteady Burning and Combustion Stability of Solid Propellants written by Martin Summerfield and published by AIAA. This book was released on 1992 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Solid propellant Combustion written by Kenneth K. Kuo and published by . This book was released on 1984 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condensed Phase Processes During Solid Propellant Combustion 1 Preliminary Chemical and Microscopic Examination of Extinguished Propellant Samples written by Michael A. Schroder and published by . This book was released on 1990 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Burning propellant samples are quenched, and the burned surfaces are examined microscopically and by chemical analysis. Studies are in progress on a series of propellants including XM39, M30, JA2, RDX, HMX, HMX/PU, and HMP/polyester ('HMX2') compositions. Preliminary results on quenched samples of XM39 burned at low pressures show evidence of a liquid layer approximately 100-300 micron thick. SEM examination reveals little if any evidence of degradation below this liquid layer. GCMS analysis shows that the stabilizer is depleted considerably in the surface layers of quenched samples, presumably by reaction with nitrogen oxides formed by decomposition of RDX and NC. HPLC results show that there is a significant increase the very small amounts possibly present as impurities. Keywords: Extinguishment, Quenched-sample analysis, Propellants, Explosives, Nitramines, Nitrate esters, Combustion. (jes).
Download or read book Combustion in Solid Propellant Rocket Motors Undergoing Depressurization to Produce a Quench written by Tsuyoshi Hiroki and published by . This book was released on 1965 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid propellant Combustion Instability and the Role of Velocity Coupling written by Louis A. Povinelli and published by . This book was released on 1969 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pressure and velocity coupling effects on combustion stability in solid propellant burning.
Download or read book Solid Propellant Chemistry Combustion and Motor Interior Ballistics 1999 written by Vigor Yang and published by AIAA. This book was released on 2000 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condensed phase Processes During Solid Propellant Combustion written by and published by . This book was released on 1992 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Solid Propellant Combustion written by K. K. Kuo and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Synergistic and Novel Effects in Composite Solid Propellant Combustion written by Warren C. Strahle and published by . This book was released on 1974 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes experiments and analysis concerned with sandwich and cast composite solid propellant combustion. The ingredients used in the experiments are ammonium perchlorate as the oxidizer, hydroxyl terminated polybutadiene as the binder and four catalysts: Harshaw catalyst CU-0202, Fe2O3, ferrocene and iron blue. Cinephotomacrography and the fuze wire technique are used for combustion visualization and burn rate determination. Scanning electron microscopy is used for quenched sample visualization. Areas investigated are (a) analytical and experimental determination of synergistic catalytic effects in sandwich and propellant combustion, (b) the loading of ferrocene into the binder at the molecular level and its effect on sandwich combustion, (c) differential scanning calorimetry of catalyst laden binder and (d) analysis of sandwich deflagration.
Download or read book Progress in Combustion Science and Technology written by J. Ducarme and published by Elsevier. This book was released on 2014-05-12 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Series of Monographs in Aeronautics and Astronautics, Division III: Progress in Combustion Science and Technology, Volume I focuses primarily on the aeronautical aspects of combustion. This book discusses the flow visualization techniques, chemical analysis in combustion chamber development, and aerodynamic influences on flame stability. The geometric-optical techniques in combustion research, flame quenching, and ignition in liquid propellant rocket engines are also elaborated. This text likewise covers the flow studies under combustion conditions, geometric optics of flames, and empirical studies of hypergolic rocket propellant ignition delays. This volume is a good reference for research students, scientists, and engineers conducting work in the field of combustion science and technology.
Download or read book Combustion Mechanisms of Solid Propellants written by E. W. Price and published by . This book was released on 1980 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigation of mechanisms of combustion and combustion zone microstructure continued, using ammonium perchlorate-hydro-carbon binder sandwiches and the quench-burning method to obtain high resolution measurements. Binder-thickness deflagration limits were also determined, and work started on measurement of burning rate vs binder thickness. On the basis of results to date, a modified picture of the combustion zone is proposed that differs sharply from the classical model, particularly in those regions of the sandwich surface that are close enough to the AP-binder interface to correspond to processes in solid propellant combustion. (Author).
Download or read book Condensed Phase Processes During Solid Propellant Combustion 3 Preliminary Depth Profiling Studies on XM39 JA2 M9 M30 and HMX2 written by and published by . This book was released on 1994 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes preliminary depth-profiling studies on the chemical changes in the burned layers of propellant samples that have been burned in air, then quenched by dropping them into water. The changes studied described here are mainly those observable by infrared spectroscopy using an infrared microscope. Depth-profiling is obtained either by examining the cross section of a burned propellant sample or by abrasive blasting small amounts of material from the burned surface and examining the remaining surface in the infrared microscope. The propellants and compositions studied include XM39, JA2, M9, M30, and HMX2. For the nitramine-binder compositions XM39 and HMX2, the surface layers seem to consist of a layer of molten oxidizer (RDX or HMX) tens to hundreds of micrometers thick, overlaid by a 10- or 20-micrometer-thick layer of binder and/or its decomposition products. In the case of the nitrate ester compositions JA2 and M9, the chemical changes observable by infrared spectroscopy seem to be very near the surface, within approximately 10 micrometers. This is in agreement with our scanning electron microscope observations and with results in the literature.
Download or read book Flame Propagation Into the Gap of Solid Propellant Grain written by T. Godai and published by . This book was released on 1969 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flame propagation into a narrow gap, which is prepared perpendicular to the prime burning surface of solid propellant grain, has been experimentally investigated using the test specimens of polyester-ammonium perchlorate composite propellants. Experimental results show that the flame propagates from the original burning surface into a gap when its width is larger than some critical value, and vice versa. This means that there always exists the critical value for the width of gap which is the threshold of propagation and nonpropagation of flame into it. The critical value is primarily the function of linear burning rate and the over-all mechanism of flame propagation into a gap of solid propellant grain will be explained with the quenching theorem. It is expected that further work will give a useful measure to the setting of standards of nondestructive testing of solid propellant grains and motors -- Author.
Download or read book Solid Propellant Combustion written by Paul Vantoch and published by . This book was released on 1966 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
