Influence of Particle Size and Temperature on the Burning Rate of Small Caliber Ball Powder

2021 ◽  
Author(s):  
John J. Ritter ◽  
Catalin‐Florin Petre ◽  
Pascal Beland ◽  
Charles Nicole
Keyword(s):  
Particle Size ◽  
Burning Rate

Relation between the flameless burning rate of condensed mixtures and oxidizer particle size

1969 ◽  
Vol 5 (4) ◽  
pp. 395-397
Author(s):  
S. S. Novikov ◽  
P. F. Pokhil ◽  
O. P. Rysakova-Romashkan
Keyword(s):  
Particle Size ◽  
Burning Rate ◽  
Oxidizer Particle

scholarly journals Regulation of the burning rate of a pyrotechnic composition based on magnesium and sodium nitrate additives of different type and particle size

2016 ◽  
Author(s):  
С.В. Шибанов ◽  
◽  
Д.А. Ягодников ◽  
В.И. Сарабьев ◽  
Г.А. Данилова ◽  
...  
Keyword(s):  
Particle Size ◽  
Burning Rate ◽  
Sodium Nitrate ◽  
Pyrotechnic Composition

Influence of Solid Particle Size on Burning and Mechanical Properties of AP/Al/HTPB Composites

2012 ◽  
Vol 510-511 ◽  
pp. 500-506 ◽  
Author(s):  
Z. Mehmood ◽  
Mohammad Bilal Khan ◽  
T. Abbas ◽  
Nasir M. Ahmad
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Tensile Strength ◽  
Particle Size Distribution ◽  
Burning Rate ◽  
Size Distribution ◽  
Maximum Stress ◽  
Aluminum Particles ◽  
Tensile Tester ◽  
Coarse To Fine

Mechanical and ballistics properties are a measure of the performance of AP/Al/HTPB composites. These properties are influenced by the characteristics of inorganic crystalline oxidizer and aluminum particles. This paper reports the effect of the particle size distribution on mechanical and burning properties of 87% solid loaded composites. Composites were fabricated by mixing the ingredients in the planetary mixer followed by curing at an elevated temperature for several days. Multimodal particle size distribution was used in which coarse to fine ratio was varied proportionally. The burning rate was measured using strand burner at various pressures. Mechanical properties of the composites were investigated by using tensile tester. Results revealed that tensile strength and the burning rate increased while elongation at maximum stress decreased with the increase in the quantity of fines oxidizer. Whereas the variation in the particle size of the aluminum do not have any pronounced effect on the burning as well as mechanical properties of the composite.

scholarly journals Effects of Mg Al Alloy Powder on the Combustion and Infrared Emission Characteristics of the Mg Al PTFE Viton Composition

2020 ◽  
Vol 70 (6) ◽  
pp. 590-595
Author(s):  
Toan Nguyen Trung ◽  
Nhung Nguyen Thi Cam
Keyword(s):  
Particle Size ◽  
Burning Rate ◽  
Alloy Powder ◽  
Infrared Emission ◽  
The Other ◽  
Al Alloy ◽  
Emission Characteristics ◽  
Infrared Radiance ◽  
Alloy Particles ◽  
Pyrotechnic Composition

Metal-Fluorocarbon compositions are the pyrotechnic formulations which have been widely used in infrared decoy flares to protect aerial targets from infrared guide missile seekers. In this work, the effect of Mg-Al alloy powder (i.e. the particle size and the content) on the combustion and the infrared emission characteristics (i.e. the infrared emission distribution and the infrared radiance) of the pyrotechnic composition based on Mg-Al alloy, polytetrafluoroethylene (PTFE) and Viton rubber are described. The results show that the high burning rate (with the values of 4.0 mm.s-1 to 10.0 mm.s-1, depend on the compression density) of this composition is achieved with a high content of Mg-Al alloy or when using fine Mg-Al alloy particles as well as coarse PTFE particles. On the other hand, the infrared emission radiance (in the wavelength range of 2.5 μm to 5.0 μm) of Mg-Al/PTFE/Viton composition reaches maximum values (i.e. 17.7 W.cm-2.Sr-1 and 21.0 W.cm-2.Sr-1 with the size of Mg-Al particles are 20 μm and 120 μm, respectively) at 60 wt% Mg-Al alloy. Finally, the Mg-Al/PTFE/Viton composition has a similar combustion and emission characteristics as the Mg/PTFE/Viton composition.

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