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Oscillatory burning of solid composite propellants
Symposium (International) on Combustion, 1963Analytical consideration of the interaction of an oscillatory pressure disturbance with the burning zone of a composite propellant leads to the conclusion that acoustic waves induce periodic variations in the ratio of the mass release rates of composite propellant components that give rise to harmonic composition and adiabatic flame temperature ...
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Integrated model of a composite propellant rocket
AIP Conference Proceedings, 2016The combustion of composite solid propellants was investigated and an available numerical model was improved for taking into account the change of pressure, when the process occurs in a confined environment, as inside a rocket. The pressure increase upon ignition is correctly described by the improved model for both sandwich and dispersed particles ...
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A model of erosive burning of composite propellants
13th Propulsion Conference, 1977Abstract : Development of solid rocket motor designs which result in high velocity flows of product gases across burning propellant surfaces(notably, nozzleless rocket motors) is leading to increased occurrence of erosive burning. In this paper, a physically realistic picture of the effect of such crossflow on composite propellant combustion, based on ...
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Numerical modeling of composite propellant combustion
Symposium (International) on Combustion, 1998An innovative 2-D numerical model of composite propellant combustion is proposed. It takes into acount the detailed description of the propellant topology, five chemical reactions, gas molecular diffusion, and heat transfer in the gas phase. Partial differential equations are numerically solved introducing a topological matrix.
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Development of an Aircraft Composite Propeller
SAE Technical Paper Series, 1979<div class="htmlview paragraph">The current aircraft noise regulations effected the design of propellers where tip speeds were reduced to meet these regulations. Reduced tip speeds were accomplished by reducing propeller rpm and/or propeller diameter.
W. B. Harlamert, R. Edinger
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Improvement of HNF and Propellant Characteristics of HNF-Based Composite Propellants
43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2007Nomenclature AP = ammonium perchlorate BRM = burning rate modifier BSR = bench scale reactor CSD = crystal size distribution ESA = European Space Agency HNF = hydrazinium nitroformate HNF-C = HNF recrystallised from HNF-P by cooling crystallisation HNF-P = HNF produced by precipitation HZ = hydrazine HZH = hydrazine hydrate L/D = length over diameter ...
Willianne Welland +3 more
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COMBUSTION OF COMPOSITE PROPELLANTS WITH TITANIUM
Journal of Applied Mechanics and Technical Physics, 2023N. S. Belousova +2 more
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Combustion mechanism of an RDX-based composite propellant
Combustion and Flame, 1999The co mbustion mechanism of a composite propellant having the nominal composition 84% RDX + 16% HTPB has been investigated experimentally. The following steady combustion parameters were collected over the pressure range 0.1 to 8.21 MPa: burn rates, burn surface temperatures, thermal gradients, heat release in the condensed phase, heat feedback from ...
DE LUCA, LUIGI +4 more
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Convective ignition of a granular solid propellant bed: Influence of propellant composition
Symposium (International) on Combustion, 1996In previous work, the authors designed and built a laboratory apparatus that subjects a confined bed of granular propellant to essentially a planar hot-gas ignition wave. Diagnostics include wall-mounted pressure transducers to monitor the time history of the pressure field, and fast-response thermocouples protected within custom sting-mounted steel ...
Douglas E. Kooker +2 more
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Studies on Interface Properties of Propellant Liner for Case-Bonded Composite Propellants
Journal of Energetic Materials, 2003For ensuring a good bond between the insulator and the propellant, a thin layer of liner is applied. Liner compositions should preferably be based on the same binder system used in the propellant formulations. As the liner is to hold the propellant and insulator without debond in all the environmental conditions, the interface properties are very ...
S. D. KAKADE +2 more
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