Chinese Journal of Aeronautics最新文献_第10页

Distributed dynamic task allocation for unmanned aerial vehicle swarm systems: A networked evolutionary game-theoretic approach 无人机蜂群系统的分布式动态任务分配：网络进化博弈论方法

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.12.027

Zhe Zhang, Ju Jiang, Haiyan Xu, Wen-An Zhang

引用次数: 0

A novel method for active deception jamming discrimination based on multi-pulse joint frequency response 基于多脉冲联合频率响应的主动欺骗干扰识别新方法

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.12.033

Wenbin Wei, Ruihui Peng, Yunlong Dong, Dianxing Sun, Le Xu, Guohong Wang

引用次数: 0

Dynamically updated digital twin for prognostics and health management: Application in permanent magnet synchronous motor 用于预报和健康管理的动态更新数字孪生系统：永磁同步电机中的应用

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.12.031

Haoyu Guo, Shaoping Wang, Jian Shi, Tengfei Ma, G. Guglieri, Rujun Jia, F. Lizzio

引用次数: 0

Constructing quasi-vertical fiber bridging behaviors of aramid pulp at interlayer of laminated basalt fiber reinforced polymer composites to improve flexural performances 在层状玄武岩纤维增强聚合物复合材料的层间构建芳纶浆料的准垂直纤维架桥行为，以改善抗折性能

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.10.013

Guangming YANG , Fei CHENG , Shihao ZUO , Jinheng ZHANG , Yang XU , Yunsen HU , Xiaozhi HU , Yong WEI , Guangjun GOU

{"title":"Constructing quasi-vertical fiber bridging behaviors of aramid pulp at interlayer of laminated basalt fiber reinforced polymer composites to improve flexural performances","authors":"Guangming YANG , Fei CHENG , Shihao ZUO , Jinheng ZHANG , Yang XU , Yunsen HU , Xiaozhi HU , Yong WEI , Guangjun GOU","doi":"10.1016/j.cja.2023.10.013","DOIUrl":"10.1016/j.cja.2023.10.013","url":null,"abstract":"<div><p>Basalt Fiber Reinforced Polymer (BFRP) composites have huge potential application respects for some civil fields due to enough strength/modulus to weight and low cost by replacing carbon fiber composites. Aiming at the issues in the Resin-Rich Region (RRR) and Interfacial Transition Region (ITR) of fiber reinforced polymer composites, the characteristic Aramid Pulp (AP) fibers with micro-fiber trunk and nano-fiber branches were manufactured into multiple non-woven ultra-thin interleaving at the interlayers of BFRP composites via compression molding to reinforce the flexural strengths and elastic moduli. AP fibers were introduced into RRR to form interleaving at the interlayer, the brittle epoxy adhesive layer was improved and enabled to avoid cracking under a low external load. Free fiber branches of AP were also embedded into BF layer to construct quasi-vertical fiber bridging behaviors in ITR, stronger mechanical interlocking was created to prevent crack propagation along the bonding interface of BF/epoxy. Three-point bending testing results showed the interleaving film with 4 g/m<sup>2</sup> AP exhibited the best effect among various areal densities and yielded average 315.75 MPa in flexural strength and 21.38 GPa in elastic modulus, having a 63.4% increment and a 47.1% increment respectively compared with the bases. Overall, the simple and low-cost AP interleaving is confirmed as an effective method in improving interlayer structure and flexural performance of BFRP composites, which may be considered to manufacture high-performance laminated fiber reinforced polymer composites in civil aviation industry.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 477-488"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S100093612300362X/pdfft?md5=fefd45ec141d61d071685734e0b085b5&pid=1-s2.0-S100093612300362X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135963846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel yaw effector of a flying wing aircraft based on reverse dual synthetic jets 基于反向双合成射流的飞翼飞机新型偏航效应器

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.06.023

Zhijie ZHAO, Zhenbing LUO, Xiong DENG, Jianyuan ZHANG, Zhaofeng DONG, Jiefu LIU, Shiqing LI

{"title":"Novel yaw effector of a flying wing aircraft based on reverse dual synthetic jets","authors":"Zhijie ZHAO, Zhenbing LUO, Xiong DENG, Jianyuan ZHANG, Zhaofeng DONG, Jiefu LIU, Shiqing LI","doi":"10.1016/j.cja.2023.06.023","DOIUrl":"10.1016/j.cja.2023.06.023","url":null,"abstract":"<div><p>For achieving the nice stealth performance and aerodynamic maneuverability of a Flying Wing Aircraft (FWA), a novel yaw effector based on Reverse Dual Synthetic Jets (RDSJ) was proposed without the movement of rudders. Effects on aerodynamic characteristics of a small-sweep FWA and control mechanism were investigated by numerical simulations. Finally, reverse dual synthetic jet actuators were integrated into a real FWA and flight tests were firstly carried out. Numerical results show that RDSJ could make drag coefficient increase and weaken lift coefficient, which generate a yawing moment and a rolling moment in the same direction, realizing control of heading attitudes, but strong coupling with the pitching moment occurs at large angles of attack. For control mechanism, RDSJ could produce two reverse synthetic jets out of phases, improve the reverse pressure gradient and hence form alternate recirculation zones or even early large-area separation, which cause the rise of pressures before exits and the dip of pressures behind exits, achieving improvement of drag and the yawing moment. The results of flight tests support that RDSJ could realize control of heading attitudes without deflections of rudders during the cruise stage and achieve the maximal yaw angular velocity of 10.12(°)/s, verifying the feasibility of this novel yaw effector.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 151-163"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S100093612300208X/pdfft?md5=9a6c91cc990ab93342840bd8e84e9bfd&pid=1-s2.0-S100093612300208X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48658355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel method of water bath heating assisted small ball-end magnetorheological polishing for hemispherical shell resonators 半球形壳谐振器水浴加热辅助小球端磁流变抛光新方法

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.05.003

Jinchuan TIAN , Mingjun CHEN , Jian CHENG , Henan LIU

{"title":"A novel method of water bath heating assisted small ball-end magnetorheological polishing for hemispherical shell resonators","authors":"Jinchuan TIAN , Mingjun CHEN , Jian CHENG , Henan LIU","doi":"10.1016/j.cja.2023.05.003","DOIUrl":"10.1016/j.cja.2023.05.003","url":null,"abstract":"<div><p>Hemispherical shell resonator (HSR) is the core component of hemispherical resonator gyro. It is a ψ-shaped small-bore complex component with minimum curvature radius less than 3 mm. Thus, traditional polishing methods are difficult to polish it. Small ball-end magnetorheological polishing method can polish the small components with complicated three-dimensional surface and obtain non-destructive surface. Therefore, this method is suitable for polishing HSR. However, the material removal rate of the ordinary small ball-end magnetorheological polishing is low, leading to long polishing time and low output of HSR. To solve this problem, a water bath heating assisted small ball-end magnetorheological polishing method is proposed in this research. The influence rule of processing parameters on the material removal rate is studied experimentally. A set of optimal processing parameters is obtained to maximize the material removal rate. Compared with the ordinary method, the material removal rate of the new method can be improved by 143%. Subsequently, an HSR is polished by the new method. The results show that the polishing time can be reduced by 55%, and the polished surface roughness can reach 7.7 nm. The new method has the great potential to be used in actual production to improve the polishing efficiency of HSR.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 451-460"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123001553/pdfft?md5=d1fedbba2e95f90b353a4af06d6a000f&pid=1-s2.0-S1000936123001553-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47556182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

High-speed measurement of thickness of a water film formed by a jet obliquely impinging onto a plate using an LED-induced fluorescence method 高速测量水膜的厚度由射流斜冲击到一个板使用led诱导荧光方法

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.07.039

Hongzhou ZHANG , Yong HUANG , Weiwei YUAN , Lu LI

{"title":"High-speed measurement of thickness of a water film formed by a jet obliquely impinging onto a plate using an LED-induced fluorescence method","authors":"Hongzhou ZHANG , Yong HUANG , Weiwei YUAN , Lu LI","doi":"10.1016/j.cja.2023.07.039","DOIUrl":"10.1016/j.cja.2023.07.039","url":null,"abstract":"<div><p>A transient thickness distribution measured with a high temporal resolution is elemental for exploring the flow characteristics and mechanism of a liquid film formed by an impinging jet. Therefore, this paper develops a high-speed Light-Emitting Diode-Induced Fluorescence (LEDIF) system based on the brightness measured directly above the liquid film. An Ultraviolet (UV) LED lamp is used to provide sufficient and continuous excitation light. Then, a system performance analysis proves that the system can continuously measure the global film thickness at a high acquisition frequency of 5000 Hz when the dye concentration is 200 mg/L. The influence of the irregularity of the excitation intensity, including the spatial non-uniformity, temporal instability, and long-term instability, on the measurement uncertainty is analyzed in detail. The analysis indicates that the system has an acceptable uncertainty of 10%. Compared with theoretical results, experimental results verify that the LEDIF system can accurately measure the global thickness of a liquid film formed by a water jet obliquely impinging onto a plate. An experimental investigation of the radial section of the raised zone demonstrates that the radial section changes from a sewing needle to an oval when the azimuth angle increases from 10° to 90°. Meanwhile, the dynamic contact angle exponentially decreases from 41.4° to 30.1°. A dynamic analysis of surface waves shows that the measured wave velocity decreases from 12 m/s to 1 m/s and the dominant frequency decreases from 1000 Hz to 10 Hz along the flow direction.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 185-201"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123002753/pdfft?md5=0723ebf56211a5d6d71def98bf46c3bf&pid=1-s2.0-S1000936123002753-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46003111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Editorial Board - Inside Front Cover 编辑委员会 - 封面内页

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/S1000-9361(23)00383-7

引用次数: 0

Elastic buckling analysis and optimization of thin-walled bamboo-like pipe beam subjected to pure bending 承受纯弯曲的薄壁竹节状管梁的弹性屈曲分析与优化

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.12.006

Yayun Yu, Dongli MA, Liang Zhang, Xiaopeng Yang, Hao Guan

引用次数: 0

Space debris environment engineering model 2019: Algorithms improvement and comparison with ORDEM 3.1 and MASTER-8 空间碎片环境工程模型 2019：算法改进及与 ORDEM 3.1 和 MASTER-8 的比较

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2023-12-01 DOI: 10.1016/j.cja.2023.12.004

Liu Yuyan, Runqiang Chi, Baojun Pang, Hu Diqi, Wuxiong Cao, Dongfang Wang

引用次数: 0