Aug 2026· Journal of Physics, Conference Series· Vol 3304, pp. 012027· 0 citations· 13 references
Physics
Abstract
A 3 m-class lightweight unmanned airship is proposed for near-human security inspection, where multirotor UAVs are limited by endurance, downwash, and close-range safety concerns. A vehicle-transportable semi-rigid frame composed of carbon-fiber tubes and segmented prestressed cable-nets is designed. A beam-cable finite element model is coupled with NSGA-II and Abaqus batch analysis to optimize the initial stresses of six cable-net regions. The optimization objectives include maximum displacement, maximum von Mises stress, and total initial stress. From 1195 feasible designs, 125 Pareto solutions are obtained. The selected compromise solution gives a maximum displacement of 8.707 mm, a maximum von Mises stress of 13.970 MPa, and a total initial stress of 31.342 MPa. Compared with the full carbon-fiber rod frame, the prestressed cable-net scheme reduces the line-material mass by 396.05 g, corresponding to a 54.6% reduction.
This paper presents a methodology for the multi-objective optimization of protective structures for DJI Avata 2 unmanned aerial vehicles (UAVs). The modified platforms are specifically adapted for search and rescue (SAR) operations, the inspection of destroyed buildings, infrastructure, and linear facilities, as well a...
Vitaly Yakovchuk, Illya Zhydenko, Andrii Velykyi et al.· Advances in Science and Tech...· 0 citations
The purpose of this study is to design, analyse, fabricate and validate a fixed-wing UAV for stable low-speed flight, payload carriage and controlled in-flight deployment. It aims to achieve aerodynamic efficiency, structural safety, stability and practical manufacturability for short-range logistics, surveillance...
Aditya Sivaraman, A. Ansari, Aqleem Siddiqui et al.· International Journal of Int...· 0 citations
For the wingtip-connected combined UAV considered here, the proposed constraint-based assessment demonstrates that the clearance margin changes sign between the sampled 5° and 6° angles of attack, thereby bracketing the clearance transition within this interval. This study presents a deterministic, constraint-based ass...
Flexible hoses connecting seabed mining vehicles to relay stations must remain suspended, limit vehicle loads, satisfy bending constraints, and maintain stable slurry transport. This study combines a lumped mass hose model, time domain vehicle motion analysis, and sequential structural-to-flow coupling with CFD–DEM to...
Yan Li, Ke-Ping Jiang, Zhi-Bin Han· Journal of Marine Science an...· 0 citations
Large unmanned cargo airships may support heavy-lift logistics in regions without runway infrastructure, but payload release produces a rapid buoyancy surplus and changes the vehicle mass properties. This study develops a simulation framework coupling six-degree-of-freedom variable-property flight dynamics, an active s...
Hao-Xuan Cheng, Da-Liang Gao, Chen-Rui Fu et al.· Drones· 0 citations
Presently, there is a strong demand for light, economical, and highly maneuverable UAVs that, when operating independently or in a swarm formation, can replace expensive manned platforms. Such applications include emergency response and firefighting in areas such as canyons or rugged terrain, where the agility of the a...
Nikolaos K. Lampropoulos· Drones· 0 citations
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