Results 261 to 270 of about 10,802 (309)

Some properties of a composite solid propellant.

2009
Temperature profiles during polymerization, for the infinite solid cylinder, the infinite hollow cylinder and the star perforated infinite cylinder of polyurethane ammonium perchlorate solid propellent, have been determined. They show that the temperature across the solid rises considerably above the wall temperature and exceeds the 60°C (140°F) limit,
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Convective ignition of a granular solid propellant bed: Influence of propellant composition

Symposium (International) on Combustion, 1996
In 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, Stephen L. Howard, Lang-Mann Chang   +2 more
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Some Experiments on Model Composite Solid Propellants

Propellants, Explosives, Pyrotechnics, 1983
AbstractExperiments on two‐dimensional model propellants using cylindrical oxidizer (ammonium perchlorate) pellets in a fuel matrix (CTPB) are described. Measurements show that burning rate of AP in the fuel environment is lower than of pure AP. The oxidizer‐to‐fuel ratio seems to be fuel‐rich when the oxidizer particles are imbedded in contact with ...
Ramaprasad, PR, Raghunandan, BN, Mukunda, HS   +2 more
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Control of pressure deflagration limits of composite solid propellants

2nd Propulsion Joint Specialist Conference, 1966
The pressure below which solid-propellant combustion cannot occur is an important parameter influencing the behavior of extinguishable motors. Permanent extinguishment can be effected by arranging the motor parameters so that no equilibrium chamber pressure is available above this combustion threshold pressure.
JOHN A. PETERSON, RUSSELL REED, ALLAN J. MCDONALD   +2 more
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Modeling Composite Solid Propellant with Catalytic Additives

51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2013
This paper presents current work on improving the accuracy of solid composite propellant modeling to include catalytic additives and using it to develop a better understanding of the working mechanism of burning rate enhancement. To this end, isolating the physical mechanism where the catalyst impacts the composite propellant burning rate was studied ...
Corey Frazier, Andrew Demko, Eric Petersen   +2 more
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Subcritical Crack Growth in a Composite Solid Propellant

Journal of Reinforced Plastics and Composites, 1999
Uniaxial tension tests using a strain rate of 0.04 in./in./min. are performed on rectangular smooth and single edge-notched specimens of varying thicknesses for a composite solid propellant. Stress-strain, crack growth, crack growth rate and crack growth resistance data are provided.
D. T. Baron, T. C. Miller, C. T. Liu
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Continuous measurement of the burning rate of a composite solid propellant.

AIAA Journal, 1967
A method for continuous, high-resolution measurement of the burning rate of a solid propellant has been devised and used successfully in preliminary tests. The method consists of using a solid-propellant strand as the dielectric material of a capacitor forming a part of a resonant L-C circuit oscillating at a center frequency of 10.7 MHz.
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Erosive Burning of Some Composite Solid Propellants

Journal of Jet Propulsion, 1954
Experimental data on the erosive burning of several composite solid propellants are reported and discussed. The data appear to be best correlated in terms of a reduced mass velocity. At low Mach numbers , th is correlation becomes equivalent to several widely used forms employing linear velocity.
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Mechanism of ageing of composite solid propellants

Combustion and Flame, 1979
K. Kishore, V.R. Pai Verneker, G. Prasad
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Aluminum agglomeration in composite solid propellants combustion

Journal de Physique IV (Proceedings), 2002
The model of metal agglomeration in CSP combustion has been developed. The Monte Carlo (MC) method for simulation of aluminum agglomeration is considered. The investigation of different agglomeration mechanisms by the MC method has been fulfilled. It is demonstrated,'that agglomerates spectra, calculated by the MC method are polymodal, which correlates
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