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Showing 1 to 10 of 10 for “"Aluminum particle"”.
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Experimental observations of aluminum particle combustion during hypervelocity water impact and penetration
… accelerating small packets (10 mg - 20 mg) of Al particles using a light gas gun was developed to simulate conditions experi- enced by particulated shaped charge jet material during water penetration. In particle sizes tested (75 um - 5 um), only large particles at high velocities (75 um - 45 um …
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Turbulent interactions with normal shocks and their effects on aluminum particle burn time
… been proposed to decrease the burn time of fuel particles due to various mechanisms such as enhanced mixing, entropy production, and transport. In order to demonstrate this e ffect, burn time measurements were obtained for laminar and turbulent conditions at similar test conditions. The amount of …
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Further experimental investigations of underwater reactive shaped charge liners and aluminum particle combustion during hypervelocity water impact and penetration
… the 1-2 ms time range. All tests used 50.75 mm aluminum liners fired into a large tank of water with a series of 11 steel plates installed. Deformation of plates was characterized through use of 5 blue LEDs installed in three target plates (8,9,10). Various means to obtain high speed images in …
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Reaction Synthesis of Titanium Aluminide / Titanium Diboride in-Situ Composites
… Changing the extrinsic variables of titanium and aluminum particle sizes also showed a significant effect on the behavior of the reaction.
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Using optical techniques to measure aluminum burning in post-detonation explosive fireballs
… propellants to increase the heat of explosion. Aluminum is commonly used because it has a high energy density, is relatively inexpensive, is easy to produce, and has a low toxicity. To optimize the performance and safety of aluminized explosives, it is necessary to understand where, when, and …
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Experimental Investigation of Gaseous Oxyacetylene Blast Enhancement by the Combustion of Suspended Multimodal Spherical Aluminum Powder
Multimodal micron-sized spherical aluminum powders were subjected to the detonation products of a gaseous oxyacetylene mixture. The objective was to analyze the blast enhancement from the combustion of non-uniform-sized aluminum particles. These multimodal aluminum powders consisted of a 50/50 …
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Dynamics of nanoparticle combustion
… and measure the combustion behavior of the nano-aluminum suspension behind reflected shock waves. The burning time and particle temperatures were measured using optical diagnostics. In order to use pyrometry measurements for nano-aluminum particles, the emissivity of nano-alumina particles was …
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Modifying burning rate and agglomeration size in aluminized composite solid propellants using mechanically activated metals
… excessive two phase losses. Tailored composite particles has been applied to tailor aluminum particle ignition and combustion. In this research, mechanical activated aluminum magnesium powders are synthesized, tested in both laser ignition using CO2 and propellant. Prepared powders categorized …
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High temperature spectroscopic measurements of aluminum combustion in a heterogeneous shock tube
Aluminum is an important energetic material that burns with a variety of oxidizers with a high reaction enthalpy. It is a top performer for energy density if oxidizer mass is considered as well as the fuel. Because of this, it is often used as an energetic additive in anaerobic conditions because …
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Experiment and modeling : ignition of aluminum particles with a CO2 laser
Aluminum is a promising ingredient for high energy density compositions used in propulsion systems, explosives, and pyrotechnics. Aluminum powder fuel additives enable one to achieve higher combustion enthalpies and reaction temperatures. Therefore, to develop aluminum based novel and customized …