Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering最新文献_第3页

Characterization modeling of wake vortex circulation decay under reasonable worst case conditions with cuckoo search algorithm 利用布谷鸟搜索算法建立合理最坏情况下的尾流涡旋环流衰减特性模型

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-09 DOI: 10.1177/09544100241232136

Ridvan Oruc, T. Baklacioglu, Ozlem Sahin

引用次数: 0

Asymmetry of oblique shock train and flow control 斜向冲击系和流量控制的不对称性

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-08 DOI: 10.1177/09544100241232160

Zhigang Zhang, Chuan Cheng, Lantian Zhang, Yuhang Li, Longsheng Xue, Chengpeng Wang, Keming Cheng

{"title":"Asymmetry of oblique shock train and flow control","authors":"Zhigang Zhang, Chuan Cheng, Lantian Zhang, Yuhang Li, Longsheng Xue, Chengpeng Wang, Keming Cheng","doi":"10.1177/09544100241232160","DOIUrl":"https://doi.org/10.1177/09544100241232160","url":null,"abstract":"An oblique shock train generally forms an asymmetric structure in a Mach-2.7 flow field within a duct. To study the flow structure and interaction between oblique shock trains and upstream shocks, a ramp with equal width was installed inside a Mach-2.7 straight duct to generate an incident shock and an oblique shock train interaction. A Schlieren system, transient pressure measurements and particle image velocimetry were used to capture quantitative and qualitative shock structure information. Results show that the asymmetric separation deflection of the oblique shock train occurs randomly in the symmetrical straight duct. The separation deflection of the oblique shock train was steady with upstream shock interactions. Under backpressure conditions, the rate of movement of the oblique shock train increases rapidly when it passes through the separation regions generated by the ramp, and the deflection direction of the asymmetric separation may switch. Based on the characteristics of the oblique shock train and upstream shock interaction, a flow control method was used to generate asymmetric upstream flow conditions, providing active control of the oblique shock train deflection direction.","PeriodicalId":506990,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering","volume":"115 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139853037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal buckling in multi-directional porous plates: The effects of material grading and aspect ratio 多向多孔板的热屈曲：材料分级和长宽比的影响

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-08 DOI: 10.1177/09544100241232132

L. Hadji, Royal Madan, Fabrice Bernard

{"title":"Thermal buckling in multi-directional porous plates: The effects of material grading and aspect ratio","authors":"L. Hadji, Royal Madan, Fabrice Bernard","doi":"10.1177/09544100241232132","DOIUrl":"https://doi.org/10.1177/09544100241232132","url":null,"abstract":"In the present study, a trigonometric shear deformation plate theory was employed to perform a thermal buckling analysis of multi-directional functionally graded (FG) plates. During the manufacturing of the multi-directional graded plate, the formation of pores is abounded. Hence, the effect of porosity on the buckling performance was investigated by considering the variation of porosity in the plate for power law gradation variation of material properties. The adverse effect of porosity on the material properties was taken into account by employing the rule of mixture relation. Finite element results show that the thermal expansion coefficient is unaffected by the presence of porosity. For simply supported boundary conditions, the non-linear governing equations are solved for different thermal loads such as uniform, linear, and non-linear. A parametric study was performed in which the effect of grading parameters, aspect ratio, and side-to-thickness ratio under variable temperature change was studies. Critical material grading indices for multi-directional plates have been identified that help researchers and industry personnel in fabrication planning.","PeriodicalId":506990,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering","volume":"54 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139794433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Asymmetry of oblique shock train and flow control 斜向冲击系和流量控制的不对称性

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-08 DOI: 10.1177/09544100241232160

Zhigang Zhang, Chuan Cheng, Lantian Zhang, Yuhang Li, Longsheng Xue, Chengpeng Wang, Keming Cheng

{"title":"Asymmetry of oblique shock train and flow control","authors":"Zhigang Zhang, Chuan Cheng, Lantian Zhang, Yuhang Li, Longsheng Xue, Chengpeng Wang, Keming Cheng","doi":"10.1177/09544100241232160","DOIUrl":"https://doi.org/10.1177/09544100241232160","url":null,"abstract":"An oblique shock train generally forms an asymmetric structure in a Mach-2.7 flow field within a duct. To study the flow structure and interaction between oblique shock trains and upstream shocks, a ramp with equal width was installed inside a Mach-2.7 straight duct to generate an incident shock and an oblique shock train interaction. A Schlieren system, transient pressure measurements and particle image velocimetry were used to capture quantitative and qualitative shock structure information. Results show that the asymmetric separation deflection of the oblique shock train occurs randomly in the symmetrical straight duct. The separation deflection of the oblique shock train was steady with upstream shock interactions. Under backpressure conditions, the rate of movement of the oblique shock train increases rapidly when it passes through the separation regions generated by the ramp, and the deflection direction of the asymmetric separation may switch. Based on the characteristics of the oblique shock train and upstream shock interaction, a flow control method was used to generate asymmetric upstream flow conditions, providing active control of the oblique shock train deflection direction.","PeriodicalId":506990,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering","volume":" 35","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139793107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal buckling in multi-directional porous plates: The effects of material grading and aspect ratio 多向多孔板的热屈曲：材料分级和长宽比的影响

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-08 DOI: 10.1177/09544100241232132

L. Hadji, Royal Madan, Fabrice Bernard

{"title":"Thermal buckling in multi-directional porous plates: The effects of material grading and aspect ratio","authors":"L. Hadji, Royal Madan, Fabrice Bernard","doi":"10.1177/09544100241232132","DOIUrl":"https://doi.org/10.1177/09544100241232132","url":null,"abstract":"In the present study, a trigonometric shear deformation plate theory was employed to perform a thermal buckling analysis of multi-directional functionally graded (FG) plates. During the manufacturing of the multi-directional graded plate, the formation of pores is abounded. Hence, the effect of porosity on the buckling performance was investigated by considering the variation of porosity in the plate for power law gradation variation of material properties. The adverse effect of porosity on the material properties was taken into account by employing the rule of mixture relation. Finite element results show that the thermal expansion coefficient is unaffected by the presence of porosity. For simply supported boundary conditions, the non-linear governing equations are solved for different thermal loads such as uniform, linear, and non-linear. A parametric study was performed in which the effect of grading parameters, aspect ratio, and side-to-thickness ratio under variable temperature change was studies. Critical material grading indices for multi-directional plates have been identified that help researchers and industry personnel in fabrication planning.","PeriodicalId":506990,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering","volume":"17 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139854525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Segmented guidance method for multi-UAVs cooperative attack with spatio-temporal constraints 具有时空约束条件的多无人机协同攻击的分段制导方法

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-08 DOI: 10.1177/09544100241233766

Yujie Wang, Zhongnan Tang, Hongbo Xin, Qing-yang Chen, Xianzhong Gao, Xiaolong Deng

引用次数: 0

Segmented guidance method for multi-UAVs cooperative attack with spatio-temporal constraints 具有时空约束条件的多无人机协同攻击的分段制导方法

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-08 DOI: 10.1177/09544100241233766

Yujie Wang, Zhongnan Tang, Hongbo Xin, Qing-yang Chen, Xianzhong Gao, Xiaolong Deng

引用次数: 0

Non-uniform flow characteristics and rotating instability of a transonic high-pressure compressor rotor with cavity bleed 带空腔放气的跨音速高压压缩机转子的非均匀流动特性和旋转不稳定性

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-06 DOI: 10.1177/09544100241232130

Chen Xu, Shaowen Chen, Yun Gong

{"title":"Non-uniform flow characteristics and rotating instability of a transonic high-pressure compressor rotor with cavity bleed","authors":"Chen Xu, Shaowen Chen, Yun Gong","doi":"10.1177/09544100241232130","DOIUrl":"https://doi.org/10.1177/09544100241232130","url":null,"abstract":"The presence of bleed in an aero engine’s compressor can significantly impact its flow characteristics and contribute to rotating instability. This study focuses on the impact of a typical cavity bleed structure on the internal flow characteristics of a compressor, specifically its circumferential non-uniformity and aerodynamic stability. A numerical simulation involving multiple flow passages was conducted on the transonic high-pressure rotor of the E3 compressor, considering its typical bleed structure. The study delves deep into the non-uniform flow characteristics and the mechanisms behind their generation in the compressor flow field. Furthermore, the influence of bleed on the rotating instability of the compressor is explored by comparing changes in compressor instability and adiabatic efficiency under uniform and non-uniform flow field conditions. The findings indicate that the axial position of the cavity bleed structure plays a crucial role in influencing key parameters such as rotor stall margin, peak efficiency, and total pressure ratio under near-stall conditions. The circumferential non-uniformity, resulting from the presence of the cavity bleed, intensifies with higher bleed air flow rates. For the upstream bleed configuration applied to the rotor, with a total bleed rate of 5%, the maximum variation in absolute flow angle at the inlet of different rotor channels can reach up to 1°. Additionally, the maximum difference in inlet flow coefficient can reach 0.0392. These findings demonstrate that the non-uniformity caused by the typical bleed structure leads to a loss in stall margin for the rotor when compared to a uniform flow field scheme.","PeriodicalId":506990,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering","volume":"5 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139801154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A general parametric finite element modeling and stress response analysis methods for pipeline system using the nonconforming solid element 使用不符合实体元素的管道系统通用参数有限元建模和应力响应分析方法

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-06 DOI: 10.1177/09544100241232126

Wenhao Ji, Wei-hua Sun, Hong‐lei Ma, Yu Zhang, Xin Wang

{"title":"A general parametric finite element modeling and stress response analysis methods for pipeline system using the nonconforming solid element","authors":"Wenhao Ji, Wei-hua Sun, Hong‐lei Ma, Yu Zhang, Xin Wang","doi":"10.1177/09544100241232126","DOIUrl":"https://doi.org/10.1177/09544100241232126","url":null,"abstract":"In the dynamic topology optimization design of pipeline system, parametric finite element modeling (PFEM) is needed to improve the model reconstruction efficiency. Taking a typical spatial single pipeline as the research object, this paper innovatively presents a PFEM method of pipeline system based on the newly constructed nonconforming solid (Solid-NC) element. The stiffness and mass matrices of the spatial 8-node Solid-NC element with second-order boundary accuracy are obtained by introducing the node-free displacement items and statics condensation method. The PFEM method of the pipeline body is proposed by selecting the straight-line segment lengths as the pipeline shape control parameters. The PFEM method of the pipeline is described in detail, including the node coordinate solutions of straight-line and curved arc segments based on the direction vector method and vector decomposition method, respectively, and the simulation of the clamp mechanical properties considering the actual pre-tightening state of the clamp. Furthermore, the modal analysis is carried out, the node stress response solution is solved based on the stress smoothing method, and the effectiveness of the PFEM method is verified through experiment. Finally, the mesh quality and model reconstruction efficiency of the PFEM method is analyzed, the results show that the developed PFEM method has higher mesh quality and fast model reconstruction speed, and the model reconstruction time is shortened by 544.5 times at most compared with ANSYS software.","PeriodicalId":506990,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering","volume":"87 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139798724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive control law based integrated guidance and control design for missile with the radome error compensation 基于自适应控制律的导弹雷达罩误差补偿综合制导与控制设计

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2024-02-06 DOI: 10.1177/09544100231224071

Jianguo Guo, Yinghe Zhou, Min Zhou

引用次数: 0