THE INFLUENCE OF SPHERICAL GRANULAR PROPELLANTS ON THE COMBUSTION PROPERTIES OF HIGH-BURNING-RATE PROPELLANT

2010 ◽  
Vol 9 (6) ◽  
pp. 467-476 ◽  
Author(s):  
Xiaode Guo ◽  
Feng-Sheng Li ◽  
Ji-Yuan Liang ◽  
Wei Jiang ◽  
Lu-Kui Zhao
Keyword(s):  
Burning Rate ◽  
Combustion Properties

scholarly journals Flammability Characteristics of Thermally Modified Meranti Wood Treated with Natural and Synthetic Fire Retardants

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2160
Author(s):  
Milan Gaff ◽  
Hana Čekovská ◽  
Jiří Bouček ◽  
Danica Kačíková ◽  
Ivan Kubovský ◽  
...  
Keyword(s):  
Burning Rate ◽  
Flame Retardants ◽  
Thermal Modification ◽  
Positive Contribution ◽  
Spearman Correlation ◽  
Chemical Changes ◽  
Combustion Properties ◽  
Flammability Characteristics ◽  
Thermally Modified Wood ◽  
Modified Wood

This paper deals with the effect of synthetic and natural flame retardants on flammability characteristics and chemical changes in thermally treated meranti wood (Shorea spp.). The basic chemical composition (extractives, lignin, holocellulose, cellulose, and hemicelluloses) was evaluated to clarify the relationships of temperature modifications (160 °C, 180 °C, and 210 °C) and incineration for 600 s. Weight loss, burning speed, the maximum burning rate, and the time to reach the maximum burning rate were evaluated. Relationships between flammable properties and chemical changes in thermally modified wood were evaluated with the Spearman correlation. The thermal modification did not confirm a positive contribution to the flammability and combustion properties of meranti wood. The effect of the synthetic retardant on all combustion properties was significantly higher compared to that of the natural retardant.

scholarly journals Fabrication of Energetic Composites with 91% Solid Content by 3D Direct Writing

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1160
Author(s):  
Yucheng Deng ◽  
Xinzhou Wu ◽  
Peng Deng ◽  
Fayang Guan ◽  
Hui Ren
Keyword(s):  
Burning Rate ◽  
Solid Content ◽  
Heat Of Combustion ◽  
Complex Structures ◽  
Direct Writing ◽  
High Solid Content ◽  
High Solid ◽  
Combustion Properties ◽  
Traditional Manufacturing ◽  
Energetic Composites

Direct writing is a rapidly developing manufacturing technology that is convenient, adaptable and automated. It has been used in energetic composites to manufacture complex structures, improve product safety, and reduce waste. This work is aimed at probing the formability properties and combustion performances of aluminum/ammonium perchlorate with a high solid content for direct writing fabrication. Four kinds of samples with different solid content were successfully printed by adjusting printing parameters and inks formulas with excellent rheological behavior and combustion properties. A high solid content of 91% was manufactured and facile processed into complex structures. Micromorphology, rheology, density, burning rate, heat of combustion and combustion performance were evaluated to characterized four kinds of samples. As the solid content increases, the density, burning rate and heat of combustion are greatly enhanced. Based on 3D direct writing technology, complex energetic 3D structures with 91% solid content are shaped easier and more flexibly than in traditional manufacturing process, which provides a novel way for the manufacture of complicated structures of energetic components.

scholarly journals Efek Bentonit pada Karakteristik Pembakaran Droplet Biodiesel Kelapa Sawit

2020 ◽  
Vol 11 (3) ◽  
pp. 331-338
Author(s):  
Vera Dwi Wijayanto ◽  
◽  
Nurkholis Hamidi ◽  
Widya Wijayanti
Keyword(s):  
Burning Rate ◽  
Ignition Delay ◽  
Flame Temperature ◽  
Combustion Process ◽  
Liquid Fuels ◽  
Combustion Properties ◽  
Biodiesel Fuels ◽  
Spherical Droplets ◽  
Cylindrical Burner ◽  
Thermocouple Junction

The blends of fuel to base liquid fuels for the enhancement of combustion properties has long generated interest since it is linked to improvement in combustion properties in biodiesel fuels. This work investigates the effect of bentonite nanoparticles on the combustion characteristics of palm oil biodiesel. These nanoparticles are added in various compositions on biodiesel which are 0% (B0), 10% (B10), 20% (B20) and 30% (B30). The insulin pen was used to make Sub-millimeter-sized spherical droplets, and the combustion process of droplets was recorded using a camera in atmosphere condition. The fuel was dripped on the tip of the thermocouple junction and ignited using a torch of the butane-air mixture on a cylindrical burner. Properties such as ignition delay, burning rate, and flame temperature of droplets were measured with post-processing of the resulting images. The results showed a decrease in ignition delay and an increase of flame temperature with the increase of bentonite percentage due to bentonite acts as a catalyst capable of accelerating the reaction rate. However, the burning rate decrease with the increasing of bentonite percentage due to the oxygen content of the mixture is getting lower.

Ration Effect of Rheological and Combustion Properties of Coal-Oil-Water Slurry

ICCTP 2009 ◽  
2009 ◽  
Author(s):  
Qiang Zhang ◽  
Ying Tian ◽  
Da-feng Tian
Keyword(s):  
Water Slurry ◽  
Combustion Properties ◽  
Oil Water

HIGH-PRESSURE BURNING RATE MEASUREMENTS BY DIRECT OBSERVATION

2019 ◽  
Vol 18 (3) ◽  
pp. 213-227
Author(s):  
Greg Derk ◽  
Grant A. Risha ◽  
Eric Boyer ◽  
Richard A. Yetter
Keyword(s):  
High Pressure ◽  
Burning Rate ◽  
Direct Observation

BURNING RATE CHARACTERIZATION OF OXSOL LIQUID OXIDIZER

2002 ◽  
Vol 5 (1-6) ◽  
pp. 563-575
Author(s):  
George C. Harting ◽  
J. W. Mordosky ◽  
Baoqi Zhang ◽  
T. T. Cook ◽  
Kenneth K. Kuo
Keyword(s):  
Burning Rate
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