Results 251 to 260 of about 16,009 (301)

Sensing and Actuation in a Liquid Propellant Rocket Engine

1991 American Control Conference, 1991
A complete set of equations describing the conservation of mass, momentum, and energy, and multicomponent transport and chemical reaction in a liquid propellant rocket (LPR) engine are given, along with appropriate boundary conditions. The formulation includes a detailed description of the two-phase (gas/liquid) flow in terms of a moving boundary ...
Joseph Bentsman, Ame J. Pearlstein, Mark A. Wilcutts   +2 more
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Fundamental of Acoustic Instabilities in Liquid-Propellant Rockets

1992
Abstract : The objective of this research was to improve understanding of the mechanisms by which flow, mixing and combustion processes are coupled to acoustic fields in liquid propellant rocket motors. Particular attention was focused on analyses of amplification mechanisms coupled with finite rate chemical reactions by use of numerical and analytical
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COMBUSTION INSTABILITY IN LIQUID PROPELLANT ROCKET MOTORS

1959
Abstract : Starting problems involving the loss of flame from the solid propellant ignitor have caused three explosions on the 500-lb. thrust tests (tangentially oriented 1.4 spuds). The flame holding effect of the solid propellant ignitor is very critical with this injector despite the starting mixture of H-O. The variable-length sector motor was used
David T. Harrje, Frederick H. Reardon
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MODELING TECHNIQUES FOR LIQUID PROPELLANT ROCKET COMBUSTION PROCESSES

Symposium (International) on Combustion, 1963
A qualitative physical processes description of stable and unstable combustion in rockets is presented to establish the basis for choosing model hardware design criteria. It is concluded that it is not possible to scale rocket combustion processes in the usual sense of the term.
L.P. Combs, R.B. Lawhead
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Stability and Control of Liquid Propellant Rocket Systems

Journal of the American Rocket Society, 1953
Within the limitations of assumptions made in the analysis presented herein, it appears that the problem of stability and control of bipropellant liquid rockets may be investigated with respect to system dynamics, combustion time lag, and interaction of these two.
M. R. Gore, Y. C. Lee, C. C. Ross
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High Energy Liquid Propellants for Rockets

1960
High energy rocket propellants (such as fluorine, hydrogen, hydrazine, etc.) are of great interest because they result in large increases in vehicle performance over that possible with conventional propellants. This means that for any mission to be accomplished the size and weight of the vehicle required would be smaller for the high energy propellants
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Trends in the Development of Liquid Propellant Rocket Engines

Aeronautical Quarterly, 1959
The authors predict that rocket engines will fall into two categories. In both, combustion pressures will approach 200 atmospheres to attain optimum vehicle performance, balancing increased pumping losses and engine mass against increased expansion efficiency and reduced dissociation.
E. G. D. Andrews, A. W. T. Mottram
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Simulation of a Liquid-Propellant Rocket Engine Subsystem

2010
From an engineering point of view, CFD is a tool for preliminary design, design improvement, risk analysis, mission planning and operations. In this chapter, we will present engineering aspects of CFD through a task where CFD has played a significant role in accomplishing the goal of a real mission.
Cetin C. Kiris, Dochan Kwak
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Research on combustion instability in liquid propellant rockets

Symposium (International) on Combustion, 1969
Nonlinear combustion instabilities in liquid propellant rockets, considering various combustion models and experimental ...
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Fundamental Studies of Liquid-Propellant Rocket Combustion

2004
Abstract : This research was directed towards developing new knowledge of combustion processes in liquid-propellant rocket engines. Attention was given to the combustion of different fuels, beginning with hydrogenoxygen but ultimately including multicomponent hydrocarbon mixtures representative of RP fuels, and to nonlinear processes of importance in ...
openaire   +1 more source