Modeling of Nonlinear Combustion Instability in Solid Propellant Rocket Motors PDF Download
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Author: Joseph D. Baum
Publisher:
ISBN:
Category :
Languages : en
Pages : 299
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Book Description
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.
Author: Joseph D. Baum
Publisher:
ISBN:
Category :
Languages : en
Pages : 299
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Book Description
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.
Author: Louis A. Povinelli
Publisher:
ISBN:
Category : Solid propellant rockets
Languages : en
Pages : 36
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Book Description
Author: Joseph D. Baum
Publisher:
ISBN:
Category :
Languages : en
Pages : 45
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Book Description
An existing nonlinear instability model has been extended and improved to allow it to more realistically treat the longitudinal shock wave type of combustion instability frequently encountered in tactical solid rocket motors. Results obtained utilizing this model to investigate limiting amplitude and velocity coupling phenomena in solid rocket motors are presented. An advanced finite difference integration technique capable of accurately describing shocks and contact discontinuities has been incorporated into the computer program, as well as an improved heat conduction solution, an heuristic velocity coupling model, and a spectral analysis capability. Solutions of wave propagation and shock formation and propagation in a variable area duct and a solid propellant rocket motor are presented; as are a number of solutions demonstrating that limiting amplitude is independent of the characteristics of the initial disturbance. Results of a preliminary study of nonlinear velocity modulated limit cycles are presented, as are results that demonstrate the primarily traveling wave nature of nonlinear wave propagation in solid rocket motors, and the complexity of the phase relationships between pressure, burning rate, and velocity oscillations are presented. Finally, the effect of a threshold velocity on non-linear velocity coupled instability was explored, and some of the results are also presented. (Author).
Author: G. M. H. J. L. Gadiot
Publisher:
ISBN:
Category :
Languages : en
Pages : 656
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Book Description
Author: Martin Summerfield
Publisher: AIAA
ISBN: 9781600863967
Category : Solid propellants
Languages : en
Pages : 922
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Book Description
Author: Ben T. Zinn
Publisher:
ISBN:
Category : Combustion
Languages : en
Pages :
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Book Description
Author: Paul Harris (M.Sc.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 276
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Vigor Young
Publisher: AIAA
ISBN: 9781600864186
Category : Liquid propellant rockets
Languages : en
Pages : 606
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Book Description
Annotation Since the invention of the V-2 rocket during World War II, combustion instabilities have been recognized as one of the most difficult problems in the development of liquid propellant rocket engines. This book is the first published in the United States on the subject since NASA's Liquid Rocket Combustion Instability (NASA SP-194) in 1972. In this book, experts cover four major subject areas: engine phenomenology and case studies, fundamental mechanisms of combustion instability, combustion instability analysis, and engine and component testing. Especially noteworthy is the inclusion of technical information from Russia and China--a first.
Author: E. A. Powell
Publisher:
ISBN:
Category :
Languages : en
Pages : 209
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Book Description
An approximate theory based on the Galerkin method was developed to describe the nonlinear behavior of axial-mode combustion instability in solid-propellant rocket motors and T-burners. For motors with linear combustion driving and linear particle damping (gasdynamic nonlinearities only), growth rates, limiting amplitudes and waveforms were in reasonable agreement with available 'exact' numerical solutions and experimental data. For T-burners the predicted limiting amplitudes were considerably higher than the experimentally measured values. To assess the importance of combustion nonlinearities, a heuristic nonlinear combustion response model was introduced into the approximate analysis. REsults obtained with both the approximate model and the 'exact' analysis showed that nonlinear combustion effects may be important for moderate amplitudes and may account for pulsed instabilities in some cases. The higher Reynolds number correction to the Stokes Drag Law was also included in both the approximate and 'exact' analyses. Results show that nonlinear particle effects become increasingly important as particle size and/or frequency increases. Also, particle nonlinearities may have a significant effect on optimum particle size for maximum damping and may account for pulsed instabilities in some cases. (Author).
