Burning-rate behavior in aluminized wide-distribution AP composite propellants

Brewster, M. Q.; Mullen, Jessica C.

doi:10.1134/s0010508211020092

Cited by 14 publications

(8 citation statements)

References 21 publications

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“…Combustion regimes in the range p = 1.5-3.0 MPa with negative and zero dependences of burning rate on pressure were observed in [19]. In a study of AP/AOFB/Alex [7], a burning rate law with an exponent ν = −0.035 in the range p = 1.0-6.0 MPa was obtained.…”

Section: Analysis Of the Resultsmentioning

confidence: 93%

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Effect of catalytic additives and aluminum particle size on the combustion of mixed compositions with a chlorine-free oxidizer

Архипов

Gorbenko

et al. 2012

Combust Explos Shock Waves

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Experimental results on the stationary burning rate and solid content in the combustion products of mixed compositions with a chlorine-free oxidizer and an active fuel binder in the pressure range 0.025-6.0 MPa are presented. The effect of catalytic additives (silica and carbon black), the particle size of aluminum powder, and the method of preparing samples for combustion of the mixed compositions under consideration are analyzed.

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Section: Analysis Of the Resultsmentioning

confidence: 93%

“…The experimental data on the combustion of MC with a negative exponent in the burning rate law are few [7,15,19].…”

Section: Analysis Of the Resultsmentioning

confidence: 99%

Effect of catalytic additives and aluminum particle size on the combustion of mixed compositions with a chlorine-free oxidizer

Архипов

Gorbenko

et al. 2012

Combust Explos Shock Waves

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“…After picking up all diameters of the droplets, the maximum drop diameter (D max ) of the spray could be obtained. D max affects the combustion characteristics of the droplets [20] and the design of the combustion chamber.…”

Section: Data Processing Methodsmentioning

confidence: 99%

Atomization of Gel Fuels with Solid Particle Addition Utilizing an Air Atomizing Nozzle

et al. 2018

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Microscopic high-speed imaging is used to experimentally measure the velocity and size of droplets of gelled RP-1 based fuels with a solid particle additive. The gels are atomized using an air atomizing nozzle. The droplet diameter and velocity at a fixed position 20 cm from the nozzle on the centerline of the spray are measured at air mass flow rates of 1.5, 3 and 5 g/s. A parametric study is conducted to study the effect of gas mass flow rate, boron particle content, and species of the solid particle on the droplet characteristics. The results indicate that the droplet size decreases with the increasing of gas mass flow rate and boron particle content. Gel fuels with an aluminum particle are observed to produce smaller droplets at a low gas mass flow rate than that with a boron particle. The implication of these observations is that the atomization processes for gelled fuels with an additive of solid particles is controlled by the velocity difference between the gas and the droplets.

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“…The content of inclusions corresponded to their content in the initial wire that was used to produce the aluminum nanopowder [17]. Thus, the unstable state of aluminum nanopowders during the storage leads to their degradation, i. e. decrease in metallic aluminum content and other activity parameters; therefore, the practical application of aluminum nanopowders [5][6][7][8][9][10][11][12][13][14][15] requires solving the problem of their stability during storage.…”

Section: Short Communicationmentioning

confidence: 99%

“…Any nanopowders are unstable or meta-stable solid body-gas systems. As compared to compounds with low dispersity, metallic nanopowders have prominent reactivity [8][9][10] and interact with their environment [11,12]. The main oxidizer of metallic nanopowders are protons that form after dissociation of water molecules on the surface of nanoparticles [13,14].…”

Section: Introductionmentioning

confidence: 99%

Parameters of Aluminum Nanopowders Activity after Long‐Term Storage in an Airtight Container

Ilyin

Tikhonov

Mostovshchikov

2018

Propellants Explo Pyrotec

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The work has established the change in the activity parameters of aluminum nanopowders produced by electric explosion of a wire during their storage in an airtight container. The change in the characteristics of the nanopowders using four activity parameters was measured by benchmarking their activity after the production, passivation and keeping for 10–20 days and after their storage for 16 years. It was also established that after long‐term storage, the temperature of oxidation initiation for the nanopowders in air has increased; the increment of mass during oxidation at up to 800 °C for all specimens has increased, while the content of metallic aluminum has decreased. The electrical double layer on the surface of aluminum nanoparticles during storing even in an airtight container changes with time and does not provide the protective function. In this connection, the future application of aluminum nanopowders in high‐energy materials is not feasible without solving the problem of their stability. According to the results, electric‐explosion aluminum nanopowder is an unstable aluminum‐air system even in an airtight container.

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Burning-rate behavior in aluminized wide-distribution AP composite propellants

Cited by 14 publications

References 21 publications

Effect of catalytic additives and aluminum particle size on the combustion of mixed compositions with a chlorine-free oxidizer

Effect of catalytic additives and aluminum particle size on the combustion of mixed compositions with a chlorine-free oxidizer

Atomization of Gel Fuels with Solid Particle Addition Utilizing an Air Atomizing Nozzle

Parameters of Aluminum Nanopowders Activity after Long‐Term Storage in an Airtight Container

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