Journal ArticleDOI
Agglomeration and combustion characteristics of solid composite propellants containing aluminum-based alloys
TLDR
In this article, the substitution of aluminum particles with metallic alloys in order to reduce agglomeration in aluminized propellants was investigated, and a qualitative phenomenological mechanism was proposed based on a competition among four distinct effects: the metal melting temperature, the adhesive force of the aggloomerates, the propellant burning rate, and micro-explosions.About:
This article is published in Combustion and Flame.The article was published on 2020-10-01. It has received 57 citations till now. The article focuses on the topics: Economies of agglomeration & Propellant.read more
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Nanocellulose: the next super versatile material for the military
Mohd Nor Faiz Norrrahim,Noor Azilah Mohd Kasim,Victor Feizal Knight,Farhana Aziz Ujang,Nurjahirah Janudin,Mas Amira Idayu Abdul Razak,Noor Aisyah Ahmad Shah,Siti Aminah Mohd Noor,Siti Hasnawati Jamal,Keat Khim Ong,Wan Md Zin Wan Yunus +10 more
TL;DR: Nanocellulose has been identified as a super versatile material that will become a replacement material for many applications including in the military as discussed by the authors, and it has been shown that it can be synthesized from discarded fibers left over from forestry and agricultural waste that can be transformed into high value products.
Journal ArticleDOI
Advanced preparation and processing techniques for high energy fuel AlH3
TL;DR: In this paper, a review of the research results in synthesis/regeneration, thermal decomposition, oxidation, ignition and combustion characteristics, and stabilization of AlH3 over the past decades is presented.
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Combustion and agglomeration characteristics of aluminized propellants containing Al/CuO/PVDF metastable intermolecular composites: A highly adjustable functional catalyst
TL;DR: In this article , the authors explore how the combustion and agglomeration characteristics of solid propellants can be modified by replacing aluminum with ternary Al/CuO/PVDF(Polyvinylidene Fluoride) metastable intermolecular composites (MICs).
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Combustion and agglomeration characteristics of boron particles in boron-containing fuel-rich propellant
TL;DR: In this paper, the energy release efficiency of boron (B)-containing fuel-rich solid propellants depends largely on the combustion behavior of the B particles contained therein, and the combustion process of B particles was first studied using a laser ignition testing system.
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Modifying the ignition, combustion and agglomeration characteristics of composite propellants via Al-Mg alloy additives
TL;DR: In this article , the effects of substituting pure Al particles with four different Al-Mg alloys whose Mg content ranges from 10 to 60% were examined, and it was concluded that (Al/Mg)0.5 provides the optimal combination of high combustion intensity, a short ignition delay, and a high mass burning rate.
References
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Aluminum agglomeration reduction in a composite propellant using tailored Al/PTFE particles
TL;DR: In this paper, fuel-rich, mechanically activated composite particles (aluminum/polytetrafluoroethylene, Al/PTFE 90/10 and 70/30-wt.%) are considered as replacements for reference aluminum powders (spherical, flake, or nanoscale) in a composite solid propellant.
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Aluminum Agglomeration in Solid-Propellant Combustion
TL;DR: In this article, a series of tests on AP/aluminum/PBAN propellants, with particular attention to bimodal AP particle size distribution, show the effect of particle size and the concentration of fine AP on aluminum agglomeration and ignition, interpreted in terms of the distribution of aluminum in propellant microstructure and the proximity of AP-binder flamelets to precipitate ignition of accumulating aluminum.
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A pocket model for aluminum agglomeration in composite propellants
TL;DR: In this article, a model for estimating the fraction of aluminum powder that will form agglomerates at the surface of deflagrating composite propellants is presented for the purpose of estimating the amount of aluminum that melts within effective binder pocket volumes framed by oxidizer particles, and the effective pocket depends upon the ability of ammonium perchlorate modals to encapsulate the aluminum and provide a local temperature sufficient to ignite the aluminum.
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Comparison study of the ignition and combustion characteristics of directly-written Al/PVDF, Al/Viton and Al/THV composites
TL;DR: In this article, three soluble polymers of PVDF, Viton, and THV are incorporated with aluminum nanoparticles (Al NPs) and prepared as free-standing films using solvent-based direct writing.
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Tuning the Reactivity of Metastable Intermixed Composite n-Al/PTFE by Polydopamine Interfacial Control
TL;DR: A facile fabrication method is demonstrated that can be used to control the reactivity between the nanoaluminum (n-Al) and poly(tetrafluoroethylene) (PTFE) using an in situ-synthesized polydopamine (PDA) binding layer and shows an increased energy release and reduced sensitivity and more importantly tunable reactivity.