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ISSN: 2214-9147

Nitrate ester functionalized ionic liquid as energetic plasticizer for HTPB propellant

Energetic plasticizers are rarely used in HTPB propellants due to compatibility issues; one strategy is usually adopted is to introduce energetic substituents. In this study, the synthesized high-energy...

Fluid-structure interaction between shaped charge underwater explosion and sandwich composite panels

Shaped charges pose a severe threat to Unmanned Underwater Vehicle (UUV) or Autonomous Underwater Vehicles (AUV). Ultra-high molecular weight polyethylene (UHMWPE) exhibit significant application prospects...

Research on all-silicon carbide piezo-resistive high-temperature pressure sensor

This study presents the development of a fully silicon carbide (SiC)-based high-temperature piezoresistive pressure sensor utilizing a circular membrane structure to fulfill the requirements for pressure...

Ballistic performance of spaced multi-layer aluminum armor under fixed dimensional envelope constraints: FEM simulations with ANN-based design analysis

Multi-layered armor is conventionally assumed to outperform monolithic plates of equivalent mass. This study challenges this paradigm for dimensionally constrained systems by investigating AA2024-T3...

Dynamic response of corner-enhanced biomimetic spiderweb hierarchical structure under drop-weight impact

Inspired by the efficient stress dispersion of natural spider webs, this study proposed a novel corner-enhanced spiderweb honeycomb (CESH) sandwich panel. A combined experimental and numerical simulation...

A composite control strategy for an integrated air-water power system under abrupt load variation during the water-entry process

Aerial-underwater trans-medium vehicles have attracted significant interest due to their multi-domain operational capability. However, the performance of existing power systems in such vehicles remains...

In-situ investigation of multi-scale damage behavior and failure mechanisms in solid propellant under thermomechanical coupling conditions

Due to the complex service environment of solid rocket motors, solid propellants are subjected to varying temperature and strain rate loads during storage and flight operations, exhibiting complex failure...

Negative temperature-dependent infrared emissivity in Zn-Doped La3Ga5.5Ta0.5O14 ceramics for passive thermal stealth

Here we report a scalable bulk-ceramic route for mid-wave infrared (MWIR) stealth based on intrinsic emissivity suppression, achieved through one-step sintering of Zn-doped La3Ga5.5Ta0.5O14. An optimal...

HTCI-CF: Intent-driven cooperative control for multi-aircraft cooperative confrontation

Intent recognition and cooperative decision-making are often treated as separate modules in multi-aircraft cooperation. This separation limits the ability of a formation to convert recognised tactical...

Electrospray-assisted microstructural engineering of RDX/PMMA/DOA polymer-bonded energetic composites: binder distribution, sensitivity reduction and performance balance

Electrospraying was investigated as a processing route for tailoring the microstructure and properties of RDX/PMMA/DOA polymer-bonded energetic composites. Formulations containing 10 wt% and 20 wt%...

Beyond the 400 °C thermal decomposition barrier: Structural chemistry and design strategies for ultrahigh-temperature-stable energetic materials

Extreme environments-from deep-well perforation to hypersonic flight and Venusian surface blasting-impose stringent thermal demands on energetic materials, rendering 400 °C a critical stability threshold....

Ballistic performance of bioinspired double-helical Bouligand structure UHMWPE fiber laminates

Ultra-high molecular weight polyethylene (UHMWPE) fiber laminates have broad application prospects in the field of lightweight protection due to their excellent specific strength, specific modulus and...

A Dual-Mode Neuromorphic Magnetic Navigation Device Inspired by Biological Long-Distance Migration

Magnetic navigation devices, with their strong resistance to interference and high concealment, have been widely applied in military equipment such as precision-guided weapons, unmanned aerial vehicles,...

Cross-layer evolution behavior of porosity defects in Wire-Arc directed energy deposition and its suppression strategies

Hydrogen porosity is a non-negligible defect type in the additive manufacturing of aluminum alloys. Current mitigation strategies rely primarily on optimizing heat-input conditions and applying external...

Reaction modes and crack competition mechanism in HMX explosives under adjustable pre-compression

Understanding deflagration to explosion (DET) mechanism in constrained explosives is critical for charge safety. However, systematic experimental knowledge remains lacking regarding reaction mechanisms...

Blast wave characteristics and safety assessment of shallow-buried underground magazines under internal explosion

Accidental internal explosions in shallow-buried underground reinforced-concrete (RC) structures may produce external overpressure fields that affect nearby personnel and infrastructure. Unlike free-field...

The promising CL-20 based melt-cast explosive with low solubility and inhibited polymorphic transition

For designing a CL-20 based melt-cast explosive, the novel low melting-point explosive 3,5-difluoro-2,4,6-trinitroanisole (DFTNAN) is employed as melt-cast carrier in current work. Benefiting from its...

On the deformation of spherical fragment driven by explosion

Spherical fragments deform into a bullet-like shape under detonation. This deformation has a significant effect on the aerodynamic and penetration performance of the fragment. In this work, normalized...

Nitroaminotriazole as a high-nitrogen framework for the synthesis of low-sensitivity energetic materials

High-nitrogen compound 5-amino-1-((1H-tetrazol-5-yl)methyl)-3-(tetrazol-1-id-5-yl)-1H-1,2,4-triazol-4-ium (TMTT) was synthesized by incorporating tetrazole and methylenetetrazole units into a triazole...

Microdamage Evolution and Combustion Enhancement of a High-Energy Composite Propellant under Thermal Cycling

Thermal cycling is a critical environmental factor affecting the combustion behavior of high-energy composite propellants. In this work, the effects of thermal cycling (−60 to 70 °C) on microstructure...

Temperature-dependent microdamage and mechanical sensitization of HTPB/AP/Al composite propellant under wide temperature exposure conditions

Structural integrity and thermo-mechanical safety of solid rocket propellant grains under wide-temperature storage and service environments are critical for the reliability of defence propulsion systems....

Blast-induced pressure focusing in a body armor-protected thorax: Experiments and multiscale numerical simulations

Body armor is primarily designed to resist ballistic penetration, whereas its influence on blast-wave propagation and pressure-field reconstruction around the thorax remains insufficiently understood....

Development of a Rigid-Flexible Integrated Bionic Seal Whisker Sensor for Underwater Wake Detection

Seals utilize their specialized vibrissae for the precise detection and recognition of hydrodynamic wakes, enabling critical activities such as prey capture and environmental sensing. Inspired by the...

Rapid prediction of shaped charge jet impact initiation of confined explosives under complex encounter conditions: A machine learning approach integrated with simulation data

Rapid prediction of impact initiation of confined high explosive (HE) by shaped charge jet (SCJ) under complex encounter conditions plays a crucial role in air and missile defense. It constitutes a...

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