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 Nonlinear Burning Stability of Solid Propellants written by L. De Luca and published by . This book was released on 1983 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nonlinear burning analysis of solid rocket propellants, under development by this research group, was extended to include in particular variable thermal properties and volumetrically distributed chemical reactions in the condensed phase. The theory is restricted to monodimensional combustion waves and thin (i.e., quasi-steady gas phase) heterogeneous flames of thermal nature. Bifurcation diagrams were obtained, predicting the existence of: time-independent steady burning, self-sustained oscillatory steady burning, no steady sustained burning. Several bifurcation parameters were recognized. Static stability boundaries, dynamic stability boundaries, static burning boundaries, pressure deflagration limits were determined for unmetallized AP-based composite propellants. Several thin flame models, available from literature, were properly modified and extended.

Download or read book One dimensional Nonlinear Model for Determining Combustion Instability in Solid Propellant Rocket Motors written by Louis A. Povinelli and published by . This book was released on 1966 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory of Solid Propellant Nonsteady Combustion written by Vasily B. Novozhilov and published by John Wiley & Sons. This book was released on 2020-08-21 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite significant developments and widespread theoretical and practical interest in the area of Solid-Propellant Nonsteady Combustion for the last fifty years, a comprehensive and authoritative text on the subject has not been available. Theory of Solid-Propellant Nonsteady Combustion fills this gap by summarizing theoretical approaches to the problem within the framework of the Zeldovich-Novozhilov (ZN-) theory. This book contains equations governing unsteady combustion and applies them systematically to a wide range of problems of practical interest. Theory conclusions are validated, as much as possible, against available experimental data. Theory of Solid-Propellant Nonsteady Combustion provides an accurate up-to-date account and perspectives on the subject and is also accompanied by a website hosting solutions to problems in the book.

Download or read book The Dynamics of Solid Propellant Combustion written by Luigi De Luca and published by . This book was released on 1980 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: A nonlinear stability analysis of solid rocket propellant burning was carried out, within the framework of a thermal theory for thin (quasi-steady gas phase) heterogeneous flames. This required an integral method in reducing the partial differential equation for the condensed phase heat conduction to an approximate ordinary differential equation. A nonlinear algebraic function, called static restoring function, was found that contains all basic properties of equilibrium and stability of burning solid propellants. This function depends on the nature of the solid propellant (including its flame) and the operating conditions. Analysis of the static restoring function reveals the existence of lower and upper burning stabilities. Nonlinear static and dynamic burning stability boundaries were determined and stability properties of several unsteady flame models were compared. Domains of stationary reacting solutions, damped oscillatory burning, self-sustained oscillatory burning, non sustained burning were singled out. Pressure deflagration limit was evaluated. Validity and plausible extensions of this theory are discussed. Most of the analytical predictions were verified by computer simulated burning tests. Experimental results obtained in shock tube apparatus, depressurization strand burner, laser doppler velocimetry rig are presented. (Author).

Download or read book Research on Non steady Burning of Solid Propellants with Special Reference to Combustion Instability written by Martin Summerfield and published by . This book was released on 1968 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of the research program has been to study the non-steady burning characteristics of solid rocket propellants, both experimentally and theoretically, to establish a basis for avoiding combustion instability in rocket motors and for predicting thrust transients during motor ignition and extinction. A new non-steady burning model for composite propellants was formulated in which the key element, the non-steady heat feedback law from the gaseous flame, was shown to be a function of the instantaneous pressure and burning rate. Solutions to this model showed that burning stability is largely determined by the exothermicity of reactions in the immediate neighborhood of the propellant surface and by the sensitivity of burning rate to surface temperature. The predictions of the model were generally confirmed by T-motor and rapid pressurization experiments. The non-steady burning model was also used to analyze L-star combustion instability in rocket motors and to demonstrate the feasibility of a novel mechanism for suppression of combustion instability by aluminum addition to a propellant. (Author).

Download or read book written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Axial Combustion Instability in Solid Propellant Motors written by W. G. Brownlee and published by . This book was released on 1963 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear axial combustion instability occurs when one or more strong gaseous compression waves propagate longitudinally within a solid propellant rocket motor. The nonlinear unsteady flow field derives energy through interaction with the combustion process and causes an increase in the time-averaged burning rate, pressure, and thrust. This behavior has been investigated using polyurethane-ammonium perchlorate propellanta and some 200 motors in the size range 2-in.-diam by 10-in.-long to 17-in.-diam by 180-in.long. Reproducible results were obtained. The motors were found to be linearly stable and nonlinearly unstable with respect to initiation of instability. Thus, normal proof firings are unlikely to detect inherent instability, since a flow disturbance of finite amplitude is required to trigger the system. A pulse injection method of triggering was applied to all firings. As operating pressures increased above a critical value P the motors became capable of instability, the severity increasing monotonically with the restriction ratio. The effect on the critical value of changing the motor scale, length to diameter ratio, grain cross section, grain temperature, and of adding aluminum alloy and lithium fluoride to the propellant was determined. (Author).

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 Modeling of Nonlinear Combustion Instability in Solid Propellant Rocket Motors written by Joseph D. Baum and published by . This book was released on 1984 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigation sought to further our understanding of the physical mechanisms which control the initiation and severity of nonlinear combustion instability in solid propellant rocket motors. It was directed towards understanding those mechanisms which influence the triggering of instabilities.

Download or read book Linear and Nonlinear Pressure Coupled Combustion Instability of Solid Propellants written by R. S. Brown and published by . This book was released on 1969 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Evaluation of Pulse triggered Nonlinear Combustion Instability in Solid Propellant Rocket Motors written by Paul Harris (M.Sc.) and published by . This book was released on 2000 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modelling of Nonlinear Longitudinal Combustion Instability in Solid Propellant Rocket Motors written by G. M. H. J. L. Gadiot and published by . This book was released on 1988 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Combustion Instability in a Solid Propellant Two Dimensional Window Motor written by Patrick M. Hughes and published by . This book was released on 1978 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Nonlinear Combustion Instability in Solid Propellant Rocket Motors by Approximate Analytical Techniques written by Ben T. Zinn and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Evaluation of Pulse triggered Nonlinear Combustion Instability in Solid Propellant Rocket Motors written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Liquid Propellant Rocket Combustion Instability written by David T. Harrje and published by . This book was released on 1972 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: The solution of problems of combustion instability for more effective communication between the various workers in this field is considered. The extent of combustion instability problems in liquid propellant rocket engines and recommendations for their solution are discussed. The most significant developments, both theoretical and experimental, are presented, with emphasis on fundamental principles and relationships between alternative approaches.