Chinese Journal of Aeronautics最新文献

{"title":"State-of-the-art development about cryogenic technologies to support space-based infrared detection","authors":"Yuying WANG ,&nbsp;Jindong LI ,&nbsp;Xiang LI ,&nbsp;Hezhi SUN","doi":"10.1016/j.cja.2023.08.008","DOIUrl":"10.1016/j.cja.2023.08.008","url":null,"abstract":"<div><p>As a key technology for space-based Earth observation and astronomical exploration, cooled mid-wavelength and long-wavelength Infrared (IR) detection is widely used in national defense, astronomy exploration, medical imaging, environmental monitoring, agricultural and other areas. The performances of IR detectors, including cut-off wavelength, detectivity, sensitivity and temperature resolution, plays a significant role in efficiently observing and tracking the low-temperature far-distance moving targets. Achieving optimal detection performance requires the IR detectors to operate at cryogenic temperatures. The future development of space-based applications relies heavily on the mid-wavelength and long-wavelength IR detection technologies, which should be enabled by the long-life cryogenic refrigeration and high-efficiency energy transportation system operating below 40 K, to support the Earth observation and astronomical detection. However, the efficiency degradation caused by the super low temperature brings tremendous challenges to the life time of cryogenic refrigeration and energy transportation systems. This paper evaluates the influence of cryogenic temperature on the infrared detector performances, reviews the features, development and space applications of cryogenic cooling technologies, as well as the cryogenic energy transportation approaches. Additionally, it analyzes the future development trends and challenges in supporting the space-based IR detection.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 32-52"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123002832/pdfft?md5=dff3a6aee5c33af470b050969fcf6903&pid=1-s2.0-S1000936123002832-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42053845","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}

{"title":"Aerodynamic and structural characteristics of helicopter rotor in circling flight","authors":"Xu ZHOU,&nbsp;Xiayang ZHANG,&nbsp;Bo WANG,&nbsp;Qijun ZHAO","doi":"10.1016/j.cja.2023.07.025","DOIUrl":"10.1016/j.cja.2023.07.025","url":null,"abstract":"<div><p>To investigate the distinct properties of the helicopter rotors during circling flight, the aerodynamic and dynamic models for the main rotor are established considering the trim conditions and the flight parameters of helicopters. The free wake method is introduced to compute the unsteady aerodynamic loads of the rotor characterized by distortions of rotor wakes, and the modal superposition method is used to predict the overall structural loads of the rotor. The effectiveness of the aerodynamic and the structural methods is verified by comparison with the experimental results, whereby the influences of circling direction, radius, and velocity are evaluated in both aerodynamic and dynamic aspects. The results demonstrate that the circling condition makes a great difference to the performance of rotor vortex, as well as the unsteady aerodynamic loads. With the decrease of the circling radius or the increment of the circling velocity, the thrust of the main rotor increases apparently to balance the inertial force. Meanwhile, the harmonics of aerodynamic loads in rotor disc change severely and an evident aerodynamic load shock appears at high-order components, which further causes a shift-of-peak-phase bending moment in the flap dimension. Moreover, the advancing side of blade experiences second blade/vortex interaction, whose intensity has a distinct enhancement as the circling radius decreases with the motion of vortexes.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 282-296"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123002558/pdfft?md5=8b80440ead5a715ec7c8143701786c16&pid=1-s2.0-S1000936123002558-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47039802","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}

{"title":"Compensated acceleration feedback based active disturbance rejection control for launch vehicles","authors":"Xiaoyan Zhang, Wenchao Xue, Zibo Liu, Ran Zhang, Huifeng Li","doi":"10.1016/j.cja.2023.12.026","DOIUrl":"https://doi.org/10.1016/j.cja.2023.12.026","url":null,"abstract":"","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"23 11","pages":""},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139190582","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}

{"title":"Relative roll control of satellite docking using electromagnetic coils","authors":"Lijian WU ,&nbsp;Guangzheng RUAN ,&nbsp;Runqi HAN ,&nbsp;Bo WANG ,&nbsp;Yaobing WANG","doi":"10.1016/j.cja.2023.07.019","DOIUrl":"10.1016/j.cja.2023.07.019","url":null,"abstract":"<div><p>An electromagnetic coil topology and its control strategy, which can be incorporated into the electromagnetic docking device, have been proposed for the relative roll control of two satellites in space. The target satellite and the chaser satellite are respectively embarked with four and six coils evenly arranged around the docking axis. All the coils on the target satellite are Direct Current (DC) energized, while the currents in the coils of the chaser satellite are regulated to achieve the relative roll control. The electromagnetic force/torque model is built by utilizing the frequently-used far field model. Based on the fundamental components extracted from that model, this paper proposes a real-time magnetic moment vector distribution formula that simply generates a constant roll torque. This paper not only presents an equation for calculating the relative roll angle through the Euler angles of two satellites, but also an equation that converts the roll torque setpoint to the setpoints of the coil currents. A 3-closed-loop positioning controller composed of angle, angular velocity, and current loop is developed. The proposed topology is verified by finite element simulation, and the control strategy is validated by dynamics simulation and ground-based tests.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 361-374"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123002492/pdfft?md5=a0ff29db67ae8a66de3aca7333dbaab9&pid=1-s2.0-S1000936123002492-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48626229","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}

{"title":"Radial envelope forming mechanism and process design method for cylindrical rings with thin wall and high web ribs","authors":"Xinghui HAN,&nbsp;Yanlei MIN,&nbsp;Wuhao ZHUANG,&nbsp;Lin HUA,&nbsp;Duanyang TIAN,&nbsp;Zushen DENG,&nbsp;Ningbo LIU","doi":"10.1016/j.cja.2023.07.024","DOIUrl":"10.1016/j.cja.2023.07.024","url":null,"abstract":"<div><p>Cylindrical rings with thin wall and high web ribs (CRTWHWR) are widely used as the key load bearing structures such as rocket body and space station cabin in aerospace field. However, it is still difficult to efficiently manufacture CRTWHWR with high performance because of their extreme geometry with thin-walled skins, high web ribs and large size. In this paper, a novel radial envelope forming process is put forward to efficiently achieve the plastic forming of CRTWHWR with high performance. Firstly, the principle of radial envelope forming process is clarified. Then, an efficient design method for the tool motion and geometry is proposed based on the reverse envelope principle, i.e., CRTWHWR is adopted to reversely envelope the tool and thus the tool which does not interfere with CRTWHWR can be efficiently obtained in a single operation. Finally, a reasonable 3D FE model of the radial envelope forming process of CRTWHWR is established and the radial envelope forming mechanism of CRTWHWR is comprehensively revealed. Through the FE simulation and experiments with material of plastic mud, a typical CRTWHWR with diameter of 300 mm, axial height of 192 mm, the maximum rib height of 25 mm, the minimum rib thickness of 3 mm and skin thickness of 5 mm is radial envelope formed, i.e., the ratio of the maximum rib height to the minimum rib thickness reaches 8.33, the ratio of the maximum rib height to skin thickness reaches 5 and the ratio of diameter to the minimum rib thickness reaches 100. The above results verify that the proposed radial envelope forming process has great potentials in efficiently manufacturing CRTWHWR with extreme geometry.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 461-476"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123002546/pdfft?md5=4aa8c57084440bada59cd11f63e9a9f9&pid=1-s2.0-S1000936123002546-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47933483","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}

{"title":"Scallop ice shape characteristics of swept wing based on large-scale icing wind tunnel experiment","authors":"Qiang WANG ,&nbsp;Ningli CHEN ,&nbsp;Yuanbo WANG ,&nbsp;Weihao LI ,&nbsp;Yu LIU ,&nbsp;Xian YI","doi":"10.1016/j.cja.2023.07.022","DOIUrl":"10.1016/j.cja.2023.07.022","url":null,"abstract":"<div><p>Scallop ice is a special phenomenon that occurs during swept wing aircraft passing through icing clouds. It poses a great challenge for the icing safety assessment that the complex scallop ice shape feature and its mechanism are still unclear. In this work, a large-scale icing wind tunnel experiment of swept wing designed by NACA0012 airfoil is conducted in the Icing Wind Tunnel of China Aerodynamics Research and Development Center. The detailed three-dimensional ice shapes under 0°, 15°, 30° and 45° swept angles are obtained by laser scanning technology. The experimental results show that with the swept angle increasing from 0° to 45°, the 2D double ice horn structures show certain spanwise variation, and finally transform into complete scallop ice with ice thickness greatly enhanced in the stagnation line region. The empirical mode decomposition of the spanwise ice curve captures the high-frequency fluctuation on the scallop ice caused by the small-scale roughness element, while the trend with low frequency is not obvious. Based on the experimental data, a new complete scallop ice geometric model, named 5Points-5Lines-2Arcs (5P-5L-2A) model, is proposed, which can provide important basis for the quantitative description of complex scallop ice shape.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 214-230"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123002522/pdfft?md5=5a733dee259c0c1413dc8d02c1d7fd60&pid=1-s2.0-S1000936123002522-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44552975","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}

{"title":"Fiber orientation effects on grinding characteristics and removal mechanism of 2.5D Cf/SiC composites","authors":"Cheng CAO ,&nbsp;Qinghua SONG ,&nbsp;Hui FU ,&nbsp;Hansong JI ,&nbsp;Zhanqiang LIU ,&nbsp;Liping JIANG","doi":"10.1016/j.cja.2023.02.023","DOIUrl":"10.1016/j.cja.2023.02.023","url":null,"abstract":"<div><p>Carbon fiber reinforced silicon carbide (C_f/SiC) composites are widely used in aerospace for their excellent mechanical properties. However, the quality of the machined surface is poor and unpredictable due to the material heterogeneity induced by complex removal mechanism. To clarify the effects of fiber orientation on the grinding characteristics and removal mechanism, single grit scratch experiments under different fiber orientations are conducted and a three-phase numerical modelling method for 2.5D C_f/SiC composites is proposed. Three fiber cutting modes i.e., transverse, normal and longitudinal, are defined by fiber orientation and three machining directions i.e., MA (longitudinal and normal), MB (longitudinal and transverse) and MC (normal and transverse), are selected to investigate the effect of fiber orientation on grinding force and micro-morphology. Besides, a three-phase cutting model of 2.5D C_f/SiC composites considering the mechanical properties of the matrix, fiber and interface is developed. Corresponding simulations are performed to reveal the micro-mechanism of crack initiation and extension as well as the material removal mechanism under different fiber orientations. The results indicate that the scratching forces fluctuate periodically, and the order of mean forces is MA &gt; MC &gt; MB. Cracks tend to grow along the fiber axis, which results in the largest damage layer for transverse fibers and the smallest for longitudinal fibers. The removal modes of transverse fibers are worn, fracture and peel-off, in which normal fibers are pullout and outcrop and the longitudinal fibers are worn and push-off. Under the stable cutting condition, the change of contact area between fiber and grit leads to different removal modes of fiber in the same cutting mode, and the increase of contact area results in the aggravation of fiber fracture.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"36 12","pages":"Pages 425-441"},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123000444/pdfft?md5=c08cd8c305e42b3c91566030eb5befeb&pid=1-s2.0-S1000936123000444-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47875484","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}

{"title":"A muon high-resolution pseudorange measurement method: Application to muon navigation in confined spaces","authors":"Haoyang Li, Chun-liu Zhang, Xingming FAN, Longjie Tian, Tianqi Li, Yang Pang, Yanqiang Yang","doi":"10.1016/j.cja.2023.12.022","DOIUrl":"https://doi.org/10.1016/j.cja.2023.12.022","url":null,"abstract":"","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"61 4","pages":""},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138985923","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}

{"title":"Neural network based adaptive nonsingular practical predefined-time fault-tolerant control for hypersonic morphing aircraft","authors":"Shihao Xu, Changzhu Wei, Litao Zhang, Rongjun Mu","doi":"10.1016/j.cja.2023.12.020","DOIUrl":"https://doi.org/10.1016/j.cja.2023.12.020","url":null,"abstract":"","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"173 3","pages":""},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139025160","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}

{"title":"Efficient cutting path planning for a non-spherical tool based on an iso-scallop height distance field","authors":"Jiancheng Hao, Dong He, Zhaoyu Li, Pengcheng Hu, Yuanzhi Chen, Kai Tang","doi":"10.1016/j.cja.2023.12.005","DOIUrl":"https://doi.org/10.1016/j.cja.2023.12.005","url":null,"abstract":"","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":" 33","pages":""},"PeriodicalIF":5.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138619742","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}