All Research Papers Published In Defence Technology

Research Article
10.1016/j.dt.2024.12.025

Optimal two-channel switching false data injection attacks against remote state estimation of the unmanned aerial vehicle cyber-physical system

May 01, 2025
Defence Technology
Juhong Zheng + 3 more +3

Research Article
10.1016/j.dt.2024.11.009

Adjoint-based RCS surface sensitivity calculation for very large electrical size object

May 01, 2025
Defence Technology
Jun Deng + 5 more +5

The primary concern in stealth aircraft design is the very large electrical size objects. However, the computational and storage requirements of these objects present significant obstacles for current high-fidelity design methods, particularly when addressing high-dimensional complex engineering design problems. To address these challenges, we developed a surface sensitivity technique based on the multilevel fast multipole algorithm (MLFMA). An access and storage of sparse partial derivative tensor was improved to significantly enhanced the computation performance. The far-field interactions of the surface sensitivity equation were realized by differential the multipole expansion. In addition, we proposed a fast far-field multiplication method to accelerate the multiplication process. The surface mesh derivative with respect to the design variables was calculated by analytical and complex variable methods, substantially improving computational efficiency. These advancements enabled the MLFMA-based surface sensitivity method to millions meshes and large-scale gradients, extending gradient-based optimization for very large electrical size problems. Test cases have verified the effectiveness of this method in optimizing very large electrical objects in terms of both accuracy and efficiency.

Research Article
3
10.1016/j.dt.2024.12.006

Experimental and numerical study on attenuation of shock waves in ventilation pipes

Apr 01, 2025
Defence Technology
Wenjun Yu + 7 more +7

Research Article
6
10.1016/j.dt.2024.12.011

Research on the protection mechanism of methane explosion in underground space by flexible construction

Apr 01, 2025
Defence Technology
Xianqi Duan + 5 more +5

Research Article
7
10.1016/j.dt.2024.11.003

Experimental and numerical study on external explosions of cylindrical versus spherical charges at tunnel entrance

Apr 01, 2025
Defence Technology
Dan Luo + 6 more +6

Research Article
3
10.1016/j.dt.2025.03.005

Investigation of blasting effects and mechanisms on concrete frustums under side-contact explosions

Mar 01, 2025
Defence Technology
Gengxin Kang + 3 more +3

Research Article
24
10.1016/j.dt.2024.08.004

Research status of high efficiency deep penetration welding of medium-thick plate titanium alloy: A review

Mar 01, 2025
Defence Technology
Zhihai Dong + 6 more +6

Research Article
1
10.1016/j.dt.2024.10.012

An improved efficient adaptive method for large-scale multi-explosives explosion simulations

Nov 02, 2024
Defence Technology
Tao Li + 2 more +2

Research Article
3
10.1016/j.dt.2024.10.008

Investigation of mixing performance and safety characteristics of polymer-based energetic materials simulant via screw-pressing blending extrusion charges

Oct 26, 2024
Defence Technology
Gaoming Lin + 8 more +8

Research Article
4
10.1016/j.dt.2024.10.002

Experimental study on the buckling of composite cylinders with reinforced circular hole under hydrostatic pressure

Oct 10, 2024
Defence Technology
Zhun Li + 5 more +5