Demonstration of dual-thrust capability in hybrid rockets using multi-layered tubular fuel grains
December 2024
•Novel Multi-Layered Tubular (MLT) fuel grains were designed for Dual-thrust profiles in hybrid rockets.•Fuels with distinct regression rates are arranged as layers to produce a boost-sustain phase...
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Research progress of the combustion characteristics of dust/combustible gas hybrids
December 2024
Due to the high dispersion of solid powder, it is very easy to form a powder/gas hybrid system, which greatly increases the probability and severity of explosion accidents. The researchers both domestically...
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Study on the open-air NEPE solid propellant fire characteristics: Effect of altitude upon the flame performance through CFD
December 2024
Solid propellant fires, characterized by uncontrolled combustion behaviors, are a common occurrence in industries that utilize solid propellants and can lead to significant consequences. However, there...
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Thermodynamics and energy properties of the lowest eutectic mixture of TNBA/MTNP
December 2024
In light of the challenges posed by the low density, diminished energy levels, and shrinkage holes in the loading arise of the current cast-cured explosive liquid vehicle, TNT, the investigation of...
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Pyrolysis mechanism and evolved gas analysis of a promising energetic carbamate-functionalized microcrystalline cellulose nitrate
December 2024
The present study aims to elucidate the decomposition mechanism and gas evolution characteristics of a promising energy-rich carbamated microcrystalline cellulose nitrate (M3CN). The molecular structure...
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Solid propellant burn rate characterization: Effect of copper chromite blend with oxidiser and its storage
December 2024
This work details the study conducted on composite solid propellants with activated copper chromite (ACR) as burn catalyst for its burn rate change with time due to the interaction of ammonium perchlorate...
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Preparation of HNS-based sticks through 3D printing and its combustion performance
December 2024
Microscale energetic materials have garnered considerable attention because they can be integrated in microelectromechanical systems for several potential applications. Hexanitrostilbene (HNS) has been...
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High-nitrogen azotetrazole based pyrogen gas generating propellants: Aspects on synthesis, characterization, combustion characteristics and kinetics
December 2024
Propellant formulations containing a novel high nitrogen azotetrazole salt viz., diammonium 5,5′-azotetrazolate (DAAzT) along with two different binders viz., hydroxyl terminated polybutadiene (HTPB)...
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Novel approach for preparation of the energy-safety balanced cocrystals of attractive nitramines via coagglomeration
December 2024
Co-agglomeration unique crystal engineering approach; in which the co-precipitated micro-particles of nitramines with other energetic materials co-agglomerated by the slurry method; to modify the energetic...
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Combustion features of dispersed aluminum and boron in high-energy composition
December 2024
Combustion of dispersed metals in an oxidizing environment is of practical interest, which is related to the prediction of characteristics of high-energy compositions (HECs) containing metal powders,...
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Towards understanding the effect of temperature and humidity on the safety and performance of tracer pyrotechnic composition
September 2024
The present work aims to study the effect of environmental hazards, namely, temperature and humidity, on the performance and sensitivity of tracer pyrotechnic composition. The experiments showed that...
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HTPB propellant binder supplemented with nitro potato starch: Formulation, characterization, and thermal decomposition behavior
September 2024
This study conducted a detailed examination of the characteristics of hydroxyl‑terminated polybutadiene (HTPB) doped with potato starch nitrate (NPS) as a high-energy-density binder. The investigation...
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Deep-learning prediction of safety moiety of salen-type complex crystals towards explosive perchlorate salts
September 2024
Perchlorate compounds are well-known for their explosive and hazardous nature. Considering previously reported perchlorate crystals of salen-type manganese (III) complexes, our study aimed to identify...
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Recent application of porous materials in explosives: A mini-review
September 2024
Nowadays, porous structures have exhibited many novel characteristics in the microstructure design of energetic materials, which possesses a unique impact on the macroscopic properties of energetic...
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Combustion of iron particles in solid propellants at elevated pressure
September 2024
Metal fuels, such as aluminum (Al) and iron (Fe), can be added to composite solid propellants to improve their performance, such as specific impulse, density, and burning rate. In comparison to aluminum,...
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Isomerism of nitratoalkylazoles
September 2024
In the field of energetic materials, traditional materials with high toxicity or other disadvantages are mostly used. There is an urgent need for trinitrotoluene replacements (TNT), which itself is...
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Thermal decomposition and combustion performance of the organic-inorganic hybrid crystal structure oxidant DAN-2
September 2024
In this paper, we investigated the potential use of a new organic-inorganic hybrid crystal structure based on KNO3 in ignition compositions. H2dabco[K(NO3)3] (DAN-2) with organic-inorganic hybrid crystal...
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Enhanced combustion reaction and energy output of Al based energetic materials through introducing perfluorocarbon
September 2024
Introducing additional oxidizers in aluminized explosives is an effective way to improve energy performance by enhancing the secondary combustion reaction. In this work, perfluorocarbon as oxidizer...
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Modeling the process of slag formation in paste propulsion
September 2024
The results of modeling the accumulation of slag residue in the combustion chamber of a propulsion system on pasty propellant obtained using a multiphase flow evolution model are presented. The influence...
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Boron-loaded gel fuel as potential fuel for ramjet and scramjet engines- recent advancements
September 2024
Boron, a high-energy metalloid has been recognized as a potential secondary energy source for liquid hydrocarbon fuel to power volume-limited propulsion devices such as ramjet and scramjet. The higher...
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Effect of the accelerated aging process on the thermal decomposition of LiAlH4-based composite solid propellants
Available online 17 July 2024
In the present work, a study was carried out on the effect of the accelerated aging process on the thermal decomposition of two composite solid propellants based on ammonium perchlorate (AP) and hydroxy-terminated...
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Multi-hole grid thruster plume simulation model based on single grid aperture analytical model
June 2024
This paper presents a plume divergence angle prediction model for ion thruster. Firstly, an analytical model using Gaussian distribution for single grid hole plume is proposed. The parameters of this...
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Elaboration, spectroscopic characterization, and study of the thermal decomposition process of energetic composites based on ammonium perchlorate and dual-biopolymers
June 2024
The current study presents a successful elaboration and characterization of an innovative energetic composite based on nitrocellulose and nitrostarch (NCNPS) dual-biopolymers, and ammonium perchlorate...
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3D printed different polymer fuel grains for hybrid rocket engine
June 2024
The advent of various additive manufacturing technologies, such as 3D printing, has changed the structural design and preparation process of rocket fuels. In order to investigate the combustion properties...
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Array of carbon black-based microthrusters for CubeSat applications
June 2024
Access to space for small private companies requires to improve the ability to bring low-cost satellites into orbit. CubeSats offer a unique opportunity to meet these needs thanks to their reduced production...
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