Aerospace Science and Technology最新文献_第7页

An optimal guidance law based on deep reinforcement learning for compensating the lag in time-varying slope path following 一种基于深度强化学习的最优制导律用于补偿时变斜率路径跟踪的滞后

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-22 DOI: 10.1016/j.ast.2025.110948

Zibo Wang, Qidan Zhu, Tianrui Zhao, Lipeng Wang

{"title":"An optimal guidance law based on deep reinforcement learning for compensating the lag in time-varying slope path following","authors":"Zibo Wang, Qidan Zhu, Tianrui Zhao, Lipeng Wang","doi":"10.1016/j.ast.2025.110948","DOIUrl":"10.1016/j.ast.2025.110948","url":null,"abstract":"<div><div>During the carrier landing process, the carrier motion induces real-time variations in the desired slope path. Considering the inherent lag in aircraft position adjustments, this paper proposes an optimal guidance law based on deep reinforcement learning (DRL) to compensate for the lag. First, the carrier landing process is modeled as a Finite Markov Decision Process (FMDP), and a comprehensive DRL framework is developed. Second, a novel Soft Actor-Critic (LA-SAC) method enhanced with the Long Short-Term Memory (LSTM) network and the attention mechanism (AM) is introduced. The method extracts the deck motion features with the LSTM network and adjusts the weights of different state data with AM to improve learning efficiency. Additionally, a distributed neural network is designed to integrate deck motion prediction and compensation, avoiding the complexity of parameter tuning in conventional methods. LA-SAC leverages full-dimensional data to train the network and derive an optimal guidance law. Finally, the superiority of the proposed method has been verified in a semi-physical simulation platform. Compared to DRL baselines, LA-SAC achieves faster convergence and derives a superior guidance policy. Compared to conventional methods, the proposed method provides a more significant lead margin to reduce landing errors. Furthermore, the ablation experiments confirmed the effectiveness of the LSTM network and AM modules, and the real-time analysis validated the practicality of the LA-SAC algorithm in actual implementation.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110948"},"PeriodicalIF":5.8,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on cushioning characteristics of an airbag with self-adaptive variable-orifice vent 自适应变孔口气囊缓冲特性研究

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-22 DOI: 10.1016/j.ast.2025.110984

Zhongda Wu, Yichao Li, Renfu Li, Zhaojun Xi

{"title":"Study on cushioning characteristics of an airbag with self-adaptive variable-orifice vent","authors":"Zhongda Wu, Yichao Li, Renfu Li, Zhaojun Xi","doi":"10.1016/j.ast.2025.110984","DOIUrl":"10.1016/j.ast.2025.110984","url":null,"abstract":"<div><div>Airbag cushioning technology is an important landing attenuation method due to its lightweight nature and superior terrain adaptability. However, traditional airbags with fixed vent designs struggle to meet the demands of complex environments. To address these limitations, this study proposes a novel self-adaptive variable-orifice structure by designing fabric strength gradients around the vent. A drop-impact model for single-orifice configurations was established and experimentally verified. Parametric analysis of triple-layer fabric dimensions was conducted, while adaptive vent behavior and cushioning performance were evaluated across velocities (5.5-9.5 m/s) and payloads (300-2000 kg). Results showed that the tri-layer fabric enables tiered stress load-bearing, concentrating stress in the outer layer and upper vent region, achieving tear-resistant orifice expansion while reducing peak stress by 18% compared to unoptimized designs. Optimization of the tri-layer dimensions reduced the load platform's peak acceleration to 14.9g, representing a 45.8% decrease compared to the airbag with a fixed vent. This demonstrated that the proposed structure can adapt to low-payload (<1000kg) airdrop systems at 5.5–9.5 m/s, maintaining peak acceleration increases below 10%. For payloads above 1350kg, the drop velocity must be limited to ≤7.5 m/s due to vent congestion. This research confirms the adaptability of variable-orifice vent structures to diverse airdrop tasks, providing a theoretical foundation for self-adaptive impact protection systems.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110984"},"PeriodicalIF":5.8,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical-impulse detumble dynamics and perforation energy model for the detumble and capture of tumbling space debris 空间碎片的机械冲击落落动力学及落落捕获的射孔能量模型

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-22 DOI: 10.1016/j.ast.2025.110977

Siyang Qiu, Xueai Li, Kening Gong, Shilong Wang, Jingdong Zhao, Hong Liu

{"title":"Mechanical-impulse detumble dynamics and perforation energy model for the detumble and capture of tumbling space debris","authors":"Siyang Qiu, Xueai Li, Kening Gong, Shilong Wang, Jingdong Zhao, Hong Liu","doi":"10.1016/j.ast.2025.110977","DOIUrl":"10.1016/j.ast.2025.110977","url":null,"abstract":"<div><div>The proliferation of space activity has significantly increased orbital debris, with rapid-tumbling targets posing a major challenge for active debris removal (ADR). Traditional ADR methods typically separate detumbling and capture phases, leading to increased mission complexity. While mechanical-impulse methods have been proposed to reduce angular momentum via projectile impacts, they risk projectile rebound and secondary debris generation. This study proposes an optimized solution: to the approach by equipping the projectile with harpoon-like penetrating heads, barbs and tethers. Upon impact, the projectile embeds in the target, preventing ricochet, enabling simultaneous detumbling and capture in a single engagement. This work focuses on modeling the impact dynamics and perforation energetics to predict post-impact angular velocity reduction. Specifically, we develop (1) a dynamic equilibrium formulation for predicting post-impact velocities in normal and oblique collisions; (2) quasi-static analytical perforation-energy models for petaling and plugging failure modes in aluminum honeycomb sandwich panels; and (3) a novel free-spin-target impact test method that emulates in-orbit projectile strikes against spinning debris in a controlled ground environment. Experimental results validate the theoretical predictions and confirm the effectiveness of the proposed system. Tests reveal that flat and v-groove projectiles induce plugging failures, while conical, ogival, and spherical heads favor petaling under low obliquity, transitioning to intermediate modes at steeper angles. The models reliably predict perforation energy and its relationship to angular momentum transfer. This integrated detumble-and-capture concept presents a robust and efficient pathway for future ADR missions targeting non-cooperative, tumbling space debris.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110977"},"PeriodicalIF":5.8,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of the Ti-enhanced ablation resistance in a Zr-Si-B-C ceramic achieving the reduced ablation rate and long-term durability ti增强Zr-Si-B-C陶瓷抗烧蚀性的机理，实现降低烧蚀率和长期耐用性

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-21 DOI: 10.1016/j.ast.2025.110973

Xinhao Chen , Jinping Li , Tongxiang Deng , Songhe Meng , Guolin Wang

{"title":"Mechanisms of the Ti-enhanced ablation resistance in a Zr-Si-B-C ceramic achieving the reduced ablation rate and long-term durability","authors":"Xinhao Chen , Jinping Li , Tongxiang Deng , Songhe Meng , Guolin Wang","doi":"10.1016/j.ast.2025.110973","DOIUrl":"10.1016/j.ast.2025.110973","url":null,"abstract":"<div><div>During atmospheric re-entry, thermal protection systems (TPS) are subjected to prolonged oxygen-rich, high-temperature exposure and complex thermo-mechanical loads. Ultra-high temperature ceramics (UHTCs) stand out due to their high melting points, oxidation resistance and structural stability. Among them, multiphase Ti-containing ceramics exhibit superior ablation resistance above 2000 °C compared to conventional UHTCs. However, the underlying mechanism by which Ti enhances ablation performance is still obscure. In this work, Zr-Si-Ti-B-C multiphase UHTCs with varying Ti contents were fabricated via spark plasma sintering and evaluated under dissociated oxygen at a heat flux of 3.5 MW·m<sup>−2</sup> in a high-frequency plasma wind tunnel. Ti addition significantly improved ablation resistance, as confirmed by thermodynamic analysis of the underlying mechanisms. Ti incorporation refined the oxide solid-solution grains and promoted the formation of a columnar (Zr,Ti)O<sub>2</sub> gradient structure, featuring interwoven microporous channels filled with SiO<sub>2</sub>, and a Ti-rich dense band formed near the substrate. This architecture established a robust “solid skeleton–liquid filler” composite barrier that markedly enhanced structural integrity. Furthermore, active oxidation of the underlying SiC generated SiO gas that diffused through the microporous channels and reoxidized to SiO<sub>2</sub> in regions of higher oxygen partial pressure, filling pores and acting as an effective oxygen barrier. This self-reinforcing cycle further promoted the active oxidation of the underlying SiC, continuously supplying SiO to the channels and providing long-term protection. The optimized Ti-doped ceramic exhibited a 34.5 % reduction in linear ablation rate compared with the undoped counterpart, highlighting the nonlinear synergistic mechanism of Ti addition and providing new insights for next-generation TPS design.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110973"},"PeriodicalIF":5.8,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust transonic flow prediction via physics-informed operator learning and geometry-driven passive flow control 基于物理信息算子学习和几何驱动被动流动控制的稳健跨声速流动预测

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-21 DOI: 10.1016/j.ast.2025.110978

Xinyue LAN , Liyue WANG , Cong WANG , Gang SUN , Junyi ZHAI

{"title":"Robust transonic flow prediction via physics-informed operator learning and geometry-driven passive flow control","authors":"Xinyue LAN , Liyue WANG , Cong WANG , Gang SUN , Junyi ZHAI","doi":"10.1016/j.ast.2025.110978","DOIUrl":"10.1016/j.ast.2025.110978","url":null,"abstract":"<div><div>Accurate and efficient prediction of transonic flow fields remains a significant challenge in fan blade geometry optimization using computational fluid dynamics, particularly under changing operating conditions. This paper introduces POLANet, a physics-aware operator learning framework that integrates geometry-driven encoding, multi-head attention mechanisms, and physics-informed loss functions to robustly predict transonic flow fields. Traditional operator learning models struggle to capture complex flow features, including high-pressure regions, shock waves and wake regions. To address this limitation, POLANet integrates adaptive geometry encoding, multi-head attention, and physics-informed loss functions, enabling accurate and robust prediction across complex flow conditions. The proposed framework effectively captures high-gradient regions and wake zones and enhances the ability to generalize across different flow regimes, while maintaining physical consistency through physics-informed constraints embedded in the training loss. Simulation results on diverse flow conditions, including cases under different inlet conditions and geometry-induced operating variation, show that POLANet dramatically reduces the prediction mistakes seen in baseline methods, while baseline methods tend to produce oscillations and spurious multi-wake. Instead of training multiple models for each condition, which is computationally inefficient, lacks generalization, and compromises physical consistency, POLANet learns a unified mapping across diverse conditions, offering a scalable and physically grounded solution. Optimization results show that the proposed framework improves aerodynamic performance, enhancing system stability and efficiency without compromising compression capabilities. The proposed framework advances operator learning methods by introducing a geometry-driven, physics-aware framework for robust transonic field prediction and passive flow control.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110978"},"PeriodicalIF":5.8,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and optimization of cavity implement in a solid rocket ramjet under different flight conditions 不同飞行条件下固体火箭冲压发动机空腔器的设计与优化

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-21 DOI: 10.1016/j.ast.2025.110981

Zhaoyang Tian , Xu Zhang , Yiming Zhang , Xiang Tang , Meng Huang , Lei Shi

{"title":"Design and optimization of cavity implement in a solid rocket ramjet under different flight conditions","authors":"Zhaoyang Tian , Xu Zhang , Yiming Zhang , Xiang Tang , Meng Huang , Lei Shi","doi":"10.1016/j.ast.2025.110981","DOIUrl":"10.1016/j.ast.2025.110981","url":null,"abstract":"<div><div>Alterations in flight conditions modify flow characteristics in a solid rocket ramjet (SRRJ) engine, leading to variations in cavity effectiveness. To develop a cavity design with the potential for robust performance across a wide-range flight condition, numerical simulations are performed at Mach 3 and 6 to investigate the influence mechanism of the cavity on gas-solid two-phase mixing and combustion. A large-scale cavity design enhancing the performance of the SRRJ engine under different flight conditions is identified through structural optimization, including position, quantity, scale, length-to-depth ratio, and concentration ratio. The results indicate: (1) Position and length-to-depth ratio of the cavity exhibit a more pronounced impact on engine performance at Mach 6. The concentration ratio of the large-scale cavity dominates at Mach 3. Forward migration of the small-scale cavity leads to performance reduction, which the increase in cavity quantity mitigates. The large-scale cavity exhibits superior gas-solid two-phase mixing and combustion organization performance, proving greater suitability for wide-range operation. (2) Decreasing the length-to-depth ratio or increasing the concentration ratio enhances particle-oxygen mixing and combustion, but cavity depth should be constrained in an optimal range to prevent reductions in oxygen utilization and combustion intensity. (3) Through structural optimization of the cavity, the SRRJ engine achieves performance improvements up to 12% and 7.4% at Mach 3 and Mach 6, respectively, compared to the benchmark.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110981"},"PeriodicalIF":5.8,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aerodynamic and electromagnetic analysis of a Rubik's cube-inspired origami structure 受魔方启发的折纸结构的空气动力学和电磁分析

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-21 DOI: 10.1016/j.ast.2025.110979

Ji Zhang , Shuai Liu , Jintong Chen , Changguo Wang

{"title":"Aerodynamic and electromagnetic analysis of a Rubik's cube-inspired origami structure","authors":"Ji Zhang , Shuai Liu , Jintong Chen , Changguo Wang","doi":"10.1016/j.ast.2025.110979","DOIUrl":"10.1016/j.ast.2025.110979","url":null,"abstract":"<div><div>During the launch and orbital flight of a spacecraft, spatial limitations require the modification and optimization of antennas to guarantee optimal electromagnetic wave transmission and aerodynamic efficiency. This study, inspired by the Rubik's Cube, presents a novel origami structure that, through precise geometric control, facilitates the integration of fluid management and electromagnetic signal transmission, thereby enabling the efficient consolidation of multifunctional systems such as gas analysis and communication within confined spaces. The study initially examines the design configuration of the Rubik's cube-inspired origami structure and analyzes the fluid control efficacy of integrating non-reciprocal devices with check valves, as well as the performance of the electromagnetic antenna design incorporated within the structure. It also evaluates the impact of crease geometry on the deformation process of the origami structure and investigates how this deformation affects the transmission characteristics of electromagnetic waves across various frequencies. This study offers both theoretical and empirical evidence for the optimization of origami structures in signal transmission and aerodynamics, illustrating their extensive applicability to platforms like foldable microfluidic antennas and origami-deployable multifunctional spacecraft walls.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110979"},"PeriodicalIF":5.8,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pilot-helicopter-slung-load coupled dynamics and fuzzy gain scheduled adaptive anti-swing strategy 驾驶员-直升机-吊挂载荷耦合动力学及模糊增益调度自适应抗摆策略

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-20 DOI: 10.1016/j.ast.2025.110974

Luofeng Wang, Renliang Chen, Pan Li, Xiaowei Meng, Yu Zhao

{"title":"Pilot-helicopter-slung-load coupled dynamics and fuzzy gain scheduled adaptive anti-swing strategy","authors":"Luofeng Wang, Renliang Chen, Pan Li, Xiaowei Meng, Yu Zhao","doi":"10.1016/j.ast.2025.110974","DOIUrl":"10.1016/j.ast.2025.110974","url":null,"abstract":"<div><div>This study presents a fuzzy gain scheduled adaptive anti-swing strategy for helicopter slung load systems to resolve the inherent conflict between load swing stability and command tracking performance. A high-fidelity nonlinear model of the pilot–helicopter–slung load system (PHSLS) is developed, incorporating detailed rotor and flight dynamics, a modern control system with cable angle feedback, and a structural pilot model based on human physiological characteristics. Based on this model, the coupled dynamics of the PHSLS are analyzed, revealing that the inherent trade-off between stability and controllability arises from competing objectives between the fuselage and cable feedback control loops. Specifically, effective suppression of load swing oscillations requires a 39.2 % increase of maximum pilot control input, indicating a notable degradation in handling qualities. To mitigate this conflict, a fuzzy gain scheduler (FGS) is designed to adaptively adjust feedback gains based on real-time pilot input aggressiveness and load swing intensity, enabling dynamic prioritization between stability and controllability during flight. Numerical and piloted simulations show that the FGS suppresses load swing as effectively as the fixed-gain controller optimizing load swing damping, while maintaining roll tracking accuracy similar to the fixed-gain controller optimizing command tracking performance. These results confirm the effectiveness of the proposed strategy in enhancing load damping without compromising pilot control authority, supporting its potential for deployment in advanced slung load operations.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110974"},"PeriodicalIF":5.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An adaptive composite anti-disturbance control for slung payload stabilization of an unmanned tandem helicopter 无人串联直升机吊挂载荷稳定的自适应复合抗干扰控制

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-20 DOI: 10.1016/j.ast.2025.110971

Yuxiang Hou, Xiaoguang Li, Shubo Wang

{"title":"An adaptive composite anti-disturbance control for slung payload stabilization of an unmanned tandem helicopter","authors":"Yuxiang Hou, Xiaoguang Li, Shubo Wang","doi":"10.1016/j.ast.2025.110971","DOIUrl":"10.1016/j.ast.2025.110971","url":null,"abstract":"<div><div>Aiming to address the problem of slung payload swing during trajectory tracking flight of an unmanned tandem helicopter in disturbed environments, an adaptive composite anti-disturbance control (ACADC) strategy is designed. The strategy is composed of active disturbance rejection control (ADRC) and adaptive radial basis function (RBF) neural network control, which is used for real-time estimation of the total disturbance, including disturbances caused by the suspended payload. A dynamic adjustment strategy driven by error has been proposed to adaptively tune the gain of the extended state observer (ESO). In the absence of a sensor capable of measuring the payload state, the RBF neural network is employed to approximate and compensate for hysteresis responses in the suspended payload. Furthermore, the stability of the proposed control strategy is analyzed using Lyapunov theory. Finally, the simulation verified the effectiveness and robustness of the adaptive control strategy under disturbance conditions. After applying the adaptive compensation strategy, the proposed control strategy effectively suppresses payload oscillation caused by disturbance and sudden trajectory changes while ensuring trajectory tracking accuracy.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110971"},"PeriodicalIF":5.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lightning strike damage suppression property of CFRP composite coated via an EGaIn liquid metal/graphite coating EGaIn液态金属/石墨涂层CFRP复合材料的雷击抑制性能

IF 5.8 1区工程技术

Aerospace Science and Technology Pub Date : 2025-09-20 DOI: 10.1016/j.ast.2025.110969

Jiaqi Guo , Yifei Liu , Shangchen Fu , Xiangteng Ma , Xuewei Fu , Yu Wang , Yi Xiong , Jingyu Liang , Lei Hao , Peng Jin , Yichao Li

{"title":"Lightning strike damage suppression property of CFRP composite coated via an EGaIn liquid metal/graphite coating","authors":"Jiaqi Guo , Yifei Liu , Shangchen Fu , Xiangteng Ma , Xuewei Fu , Yu Wang , Yi Xiong , Jingyu Liang , Lei Hao , Peng Jin , Yichao Li","doi":"10.1016/j.ast.2025.110969","DOIUrl":"10.1016/j.ast.2025.110969","url":null,"abstract":"<div><div>Developing lightweight and high electrical conductivity coating is an effective approach to improve lightning strike suppression property of carbon fiber reinforced polymer (CFRP) composite. In this work, two types of coatings composed of EGaIn (Ga-In) liquid metal and graphite were proposed and their lightning strike damage suppression properties on two types CFRP laminates ([45/0/-45/90]<sub>s</sub>, [0/90]<sub>2</sub> <sub>s</sub>) were studied. Results showed that the area density and thickness of the two coatings were only 45 %,11 % and 3 % of conventional lightning protection copper mesh while their electrical conductivities were only one and two orders of magnitude lower than copper mesh. For the suppression of lightning damages, the two coatings can significantly reduce 60 %/73 % surface damage areas and 77 %/76 % internal damage areas for [45/0/-45/90]<sub>s</sub> laminate, and 63 %/80 % and 68 %/80 % surface and internal damage areas for [0/90]<sub>2</sub> <sub>s</sub> sample after 100kA lightning strike. Compression After Lightning (CAL) properties of the two laminates were significantly enhanced from the protection of the two coatings, with retention of residual compression strength increased from 88.1 % to 96.1 % and 92.8 % for [45/0/-45/90]<sub>s</sub> laminate and from 83.9 % to 92.1 % and 90.1 % for [0/90]<sub>2</sub> <sub>s</sub> sample, close to the performance of copper mesh. The results obtained from this work provide a promising pathway for the design of lightweight CFRP composite with robust lightning strike protection functionality.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 110969"},"PeriodicalIF":5.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0