2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)最新文献_第2页

Backstepping Control for Asymmetric Fighter Aircraft Executing the High Alpha Herbst Maneuver 非对称战斗机高阿尔法赫布斯特机动后退控制

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522489

Anukaran Khanna, B. K. Mukherjee

引用次数: 0

Numerical Investigation of Dynamic Properties of The Beam with Segmented Acoustic Black Hole Indentations 分段声黑洞压痕光束动力特性的数值研究

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522508

Qidi Fu, Jianrun Zhang

{"title":"Numerical Investigation of Dynamic Properties of The Beam with Segmented Acoustic Black Hole Indentations","authors":"Qidi Fu, Jianrun Zhang","doi":"10.1109/ICMAE52228.2021.9522508","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522508","url":null,"abstract":"Embedding an acoustic black hole (ABH) in a thin-walled structure can help the system achieve vibration damping and energy gathering. Nevertheless, due to the limitations of processing and manufacturing technology, there will always leave a truncation at the tip of ABH region, which brings many undesirable impacts and makes ABH effect greatly reduced. In this paper, segmented ABH structure is proposed and applied to the Euler–Bernoulli beam. Dynamic properties of different forms beam are investigated through finite element based method, and the result shows that segmented ABH structure has better vibration attenuation and energy gathering effect. In addition, the velocity distribution and the kinetic energy ratio have also been calculated. The calculation results show that segmented ABH beam can better gather energy on the tip of ABH structure and achieve higher kinetic energy ratios in the mid to high frequencies, which further reveal the underlying mechanism of better ABH effect of segmented ABH structure. The research of this paper mainly provides a new idea around how to reduce undesirable impacts of truncation and looks forward to promote the application of ABH beam structures in engineering.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124429385","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

Taking the Effects of Material Conditions into Account in Statistical Tolerance Analysis 统计公差分析中考虑材料条件的影响

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522466

Heping Peng, Zhuoqun Peng

引用次数: 0

Modeling and Simulation of an Aeroengine Pressure Ratio Regulator 航空发动机压比调节器的建模与仿真

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522455

Chujia Sun, Linfeng Gou, Zongting Jiang, Huihui Li, Meng Zhang

{"title":"Modeling and Simulation of an Aeroengine Pressure Ratio Regulator","authors":"Chujia Sun, Linfeng Gou, Zongting Jiang, Huihui Li, Meng Zhang","doi":"10.1109/ICMAE52228.2021.9522455","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522455","url":null,"abstract":"The computer simulation software AMESim is used to establish the object-oriented simulation model and carry out the characteristic simulation research of an Aeroengine Pressure Ratio Regulator in this paper. Mechanical structure and working principle of the pressure ratio regulator is first analyzed. Then the equilibrium equations of flim mechanism, lever-spring mechanism, nozzle control valve mechanism, and nozzle actuator are constructed according to movement rules and principles of flow and force balance. Further, the simulation model of pressure ratio regulator is established on AMESim. Finally, based on the relevant parameters and experimental data, the function and performance of the model are simulated and analyzed. Simulation results show that the model is verified to be correct, realizes the required function, and satisfies the performance basically. Within the scope of work, the steady state simulation results of the model maintain a high degree of agreement with the experimental data. In the stage of engine control system design, this model can provide a theoretical basis for the structural parameter optimization design and control performance analysis of the pressure ratio regulator.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129185103","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: 1

Research Progress of Aircraft Icing Hazard and Ice Wind Tunnel Test Technology 飞机结冰危害及结冰风洞试验技术研究进展

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522552

Yongjie Zhang, Yunhui Zhang, Guisen Luo, R. Guo

引用次数: 0

Multivariable Control Coupling Analysis and ALQR Thrust Controller Design of Liquid Rocket Engine 液体火箭发动机多变量控制耦合分析及ALQR推力控制器设计

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522512

Kejie Xu, Yingqing Guo, Luyang Liu

引用次数: 0

Numerical Study on Combined Thermal Protection System on Hypersonic Vehicle and Structure Parameters Influence of Acoustic Cavity 高超声速飞行器复合热防护系统数值研究及结构参数对声腔的影响

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522459

Xin Sheng, Xi Lu, Jianrun Zhang

引用次数: 0

Experimental Study on Influence of Structural Parameters on Flow Field of Liquid-Liquid Coaxial Swirl Injector 液-液同轴旋流喷油器结构参数对流场影响的实验研究

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522395

Bingyang Liu, Ping Jin, Guobiao Cai, Yixin Ma, Yaqun Qi

{"title":"Experimental Study on Influence of Structural Parameters on Flow Field of Liquid-Liquid Coaxial Swirl Injector","authors":"Bingyang Liu, Ping Jin, Guobiao Cai, Yixin Ma, Yaqun Qi","doi":"10.1109/ICMAE52228.2021.9522395","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522395","url":null,"abstract":"In order to provide an efficient and reliable form of propellant spray for a liquid oxygen/methane engine, a variety structural of liquid-liquid coaxial swirl injectors were designed. A high-speed camera was used to capture the flow field. The swirling flow direction of the two-stage injector, the retracted length, the diameter of the first nozzle and the number of the two-stage tangential holes on the spray flow field were studied. The results showed that the spraying flow field characteristic of the liquid-liquid coaxial swirl injector was essentially determined by the interaction between the two liquid films. The same rotation direction could ensure a large atomization cone angle, but the opposite rotation direction would make the droplet mix more uniform. With the increase of the retracted length and diameter of the first injector, the atomization cone angle decreased gradually, whereas the mixing effect increased. As the retracted length and nozzle diameter of first injector extended, the atomization cone angle decreased but the mixing effect was enhanced. The mixing effect enhanced as the number of primary tangential holes extended and the number of secondary tangential holes declined, while the number of tangential holes scarcely affected the atomization cone angle.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124980697","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: 1

Distributed Formation Control of Multiple Flight Vehicles with Considering Communication Delay 考虑通信延迟的多飞行器分布式编队控制

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522381

Li Wei, Wen Qiuqiu, Jiang Huan, Xia Qunli

引用次数: 0

FEM and DEM Simulations of Tire-Soil and Drill-Soil Interactions in Off-Road Conditions for Mechanical Design Validation of a Space Exploration Rover 空间探测车机械设计验证中轮胎-土壤和钻头-土壤相互作用的有限元和DEM模拟

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522493

Elvis A. Castañeda, Roberto Pineda León, José Cornejo

{"title":"FEM and DEM Simulations of Tire-Soil and Drill-Soil Interactions in Off-Road Conditions for Mechanical Design Validation of a Space Exploration Rover","authors":"Elvis A. Castañeda, Roberto Pineda León, José Cornejo","doi":"10.1109/ICMAE52228.2021.9522493","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522493","url":null,"abstract":"With the increasing development of computational sciences in aerospace technologies, numerical methods have become a useful tool for engineering researchers. Tractive performance studies and soil-tool interactions analysis have been widely favored by the finite element method (FEM) and the discrete element method (DEM). In order to validate the current design of a tire tread and drill for its use in a space exploration rover named \"Pachacutec\", a research has been conducted by Kamayuc Team in the Smart Machines Laboratory at Universidad Nacional de Ingeniería. The research consisted in characterize a granular terrain to simulate tire-soil and drill-soil interactions in off-road conditions using DEM and FEM models. Parameters such as tractive force, axial load and terrain compaction were analyzed to predict both tire and drill real performance. The results shows that the tire tread was able to provide the necessary traction for the movement and stability of the rover. In addition, the material assigned to the drill resulted in a high mechanical strength, ensuring its safe operation. To develop a further work, the authors suggest to recollect Martian regolith simulant from a Mars Analog and reproduce the same methodology proposed in this study to validate the mechanical design in these conditions.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128007485","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: 17