2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE)最新文献_第2页

Mixing Performance of Swirler Enhanced Solid Rocket Ramjet 旋流增强型固体火箭冲压发动机的混合性能

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852502

Yongcheng Tao, Jiming Cheng, Xi-ping Feng, Desheng He, Zihai Duan

{"title":"Mixing Performance of Swirler Enhanced Solid Rocket Ramjet","authors":"Yongcheng Tao, Jiming Cheng, Xi-ping Feng, Desheng He, Zihai Duan","doi":"10.1109/ICMAE56000.2022.9852502","DOIUrl":"https://doi.org/10.1109/ICMAE56000.2022.9852502","url":null,"abstract":"In order to enhance the mixing of gas and air in the afterburning chamber of the solid rocket ramjet and improve the combustion efficiency, a swirl mixing device placed at the inlet exit of the solid rocket ramjet is designed. The accuracy of the swirl flow field calculation method was verified by the cold flow test of the solid rocket ramjet with swirler. A velocity uniformity coefficient based on the axial velocity distribution in the afterburning chamber was proposed. The influence of different blade angles and blade numbers of the swirl device on the flow field in the solid ramjet was numerically simulated, and the velocity uniformity coefficient and the total pressure recovery coefficient were used to evaluate the mixing performance of the afterburning chamber. The results show that the improved swirler designed in this paper can reduce the total pressure loss in the afterburning chamber through structural optimization. The blade angle of the swirling device affects the mixing effect of the afterburning chamber. When the blade angle varies from -30 ° to 30 °, the maximum difference in mixing effect is 7.20%. The six blades swirl device with a blade angle of 20° has the best mixing performance to improve the afterburning chamber. The mixing performance can be improved by up to 4.30%, and the total pressure loss can be reduced by 1.70%.","PeriodicalId":198002,"journal":{"name":"2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122017810","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

Wall Catalytic Effects on Aerodynamics of the Mars Entry Capsule 壁面催化对火星返回舱空气动力学的影响

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852889

K. Zhong, Hong-tie Zhao, Zeng Xu, Fei Zhang, Wei Zhao

{"title":"Wall Catalytic Effects on Aerodynamics of the Mars Entry Capsule","authors":"K. Zhong, Hong-tie Zhao, Zeng Xu, Fei Zhang, Wei Zhao","doi":"10.1109/ICMAE56000.2022.9852889","DOIUrl":"https://doi.org/10.1109/ICMAE56000.2022.9852889","url":null,"abstract":"Accurate prediction on the hypersonic aerodynamics during the Mars entry period is of great importance. In this study, the chemical non-equilibrium method is utilized to numerically investigate the effects of wall catalytic performance on the aerodynamic characteristics of the Mars entry capsule named Mars Science Laboratory (MSL). Two typical catalytic wall conditions (Super-catalytic and Non-catalytic) are chosen to take account of the catalytic effects, respectively. Numerical results show that wall catalytic condition have ignorable effect on the capsule's pressure. The shear stress predicted by the super-catalytic wall condition are overall higher than that by the non-catalytic wall, with the maximum discrepancy of up to 21% at the nose and shoulder of forebody. The maximum relative discrepancies of axial force coefficient, normal force coefficient and pitch moment coefficient predicted by different catalytic wall conditions are merely 0.3%, 1.2% and 1.3%, respectively, indicating the minimal effect of wall catalytic properties on aerodynamic force coefficients for large blunt body shapes such as the Mars entry capsule.","PeriodicalId":198002,"journal":{"name":"2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128958263","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

Design, Implementation and Testing of Operational Modes in ADCS of a CubeSat 立方体卫星ADCS工作模式的设计、实现与测试

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852877

Abdulrahman Sulaiman, Hamad Shahdad, Ahmed Alghfeli, O. Alhammadi, Faisal Alothali, M. Atallah, M. Okasha, Abdul-Halim Jallad

引用次数: 1

Design Optimization of Low Reynolds Number Airfoil for Enhanced Aerodynamics of 4R-UAV 4r -无人机低雷诺数翼型气动优化设计

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852511

A. Arshad, Chameera Nawanjana, Vadims Kovaļčuks

引用次数: 3

Structural Design and Verification of Hydrogen Peroxide Electric Pump 过氧化氢电动泵的结构设计与验证

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852888

He Yuanbo, Liu Yang, Wang Jan, Zhang Wei

引用次数: 0

Experimental Study on the Performance of a Rotating Detonation Combustor with Different Outlet Restrictions 不同出口限制下旋转爆轰燃烧室性能的实验研究

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852903

Zhongtian Jiao, Ke Wang, Zhicheng Wang, Minghao Zhao, W. Fan

引用次数: 0

Simplified Model of Aviation Brake and Wheel Dynamical Characteristics 航空制动与车轮动力学特性简化模型

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852853

Yingying Wu, Jun Wang, Dian Wang, Wen-Li Zhao

引用次数: 0

Large-Size Catalytic Bed Performance Study of Hybrid Rocket Motor Based on 98% Hydrogen Peroxide 基于98%过氧化氢的混合动力火箭发动机大型催化床性能研究

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852866

Xiangyu Meng, H. Tian, Ruikai Chen, Zihao Guo, Jihong Shan, Xiaodong Wang

{"title":"Large-Size Catalytic Bed Performance Study of Hybrid Rocket Motor Based on 98% Hydrogen Peroxide","authors":"Xiangyu Meng, H. Tian, Ruikai Chen, Zihao Guo, Jihong Shan, Xiaodong Wang","doi":"10.1109/ICMAE56000.2022.9852866","DOIUrl":"https://doi.org/10.1109/ICMAE56000.2022.9852866","url":null,"abstract":"This paper is aimed to study the performance of large-size catalytic bed for hybrid rocket motors based on 98% hydrogen peroxide (HP) through five catalytic tests. The large-size catalytic bed is 140 mm in diameter and adopts silver as the main catalyst. The tests results demonstrate that adopting silver as the main catalyst is an efficient way to catalyze 98HP. And the effects of oxidizer mass flow rate on catalytic delay time and catalytic bed pressure drop are also discovered. The catalytic delay time is negatively correlated with oxidizer mass flow rate, presenting an exponential function. And the difference between the inlet pressure of the catalytic bed and reaction chamber pressure is defined as the pressure drop of the catalyst bed. The pressure drop of the catalytic bed is linearly related to the oxidizer mass flow rate, and a linear fitting formula is obtained. Moreover, a reaction chamber and nozzle are designed to investigate characteristic velocity efficiency, which is equivalent to the efficiency of the catalytic bed. The catalytic bed efficiency is about 99.5% within the total catalytic tests time. It is concluded that this large-size catalytic bed has a high degree of stability and efficiency.","PeriodicalId":198002,"journal":{"name":"2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132803126","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

Model Predictive Control-Based Guidance and Control System for Simultaneous Multi-Satellite Assembly in Proximity Operation 基于模型预测控制的近距离多卫星装配同步制导控制系统

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852870

M. Atallah, M. Okasha, Tarek N. Dief, F. Omar

{"title":"Model Predictive Control-Based Guidance and Control System for Simultaneous Multi-Satellite Assembly in Proximity Operation","authors":"M. Atallah, M. Okasha, Tarek N. Dief, F. Omar","doi":"10.1109/ICMAE56000.2022.9852870","DOIUrl":"https://doi.org/10.1109/ICMAE56000.2022.9852870","url":null,"abstract":"This paper proposes a Model Predictive Control (MPC) framework for designing a guidance and control (G&C) system for multi-satellite assembly in proximity operation. The control system is designed by using a linear time-invariant dynamic model for circular orbit (Hill-Clohessy-Wiltshire model). Output and input constraints are studied and implemented in linear form to reduce the computational power. A collision-free maneuver is ensured by setting a hyper-plane-rotation constraint. In addition, a new form of line-of-sight constraint is developed based on the first-order approximation of the circular cone equation to guarantee smooth docking. Moreover, control input constraints are considered by setting upper and lower bounds for each input. The robustness of the system is studied by simulating the response for elliptical orbit with different values of eccentricity. The proposed GNC is verified in three stages; first, numerical simulation has been performed, second, optimized C++ code is generated and its results are compared to simulation results, and third, the C++ code is tested on the target board to verify the ability to compute the control action within the sampling time.","PeriodicalId":198002,"journal":{"name":"2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134539989","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: 4

Designing and Modeling of Airborne Wind Energy System 机载风能系统的设计与建模

2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2022-07-20 DOI: 10.1109/ICMAE56000.2022.9852907

A. Adnan, Sikandar Khan

{"title":"Designing and Modeling of Airborne Wind Energy System","authors":"A. Adnan, Sikandar Khan","doi":"10.1109/ICMAE56000.2022.9852907","DOIUrl":"https://doi.org/10.1109/ICMAE56000.2022.9852907","url":null,"abstract":"A new class of wind energy conversion system known as Airborne Wind Energy System (AWES) has been developed recently to produce energy from the natural resources. This technology uses tethered wings or flying devices to harvest wind energy at the layers of the atmosphere, which are usually out of the range of the regular wind turbines. AWES research began in the mid-1970s and has accelerated dramatically in the recent decade. A wide range of solutions were investigated as well as tested around the world. Several models have been developed around the world, and preliminary experimental results are already accessible. Practical prototypes have attained power levels of several hundred kilowatts, and manufacturers are striving for long-term operation in relevant settings. As a result, system reliability, modeling, and control have all become critical parts of system design. This paper examines the different techniques proposed to capture the energy of wind gusts, including models developed by institutions and companies. On the grounds of their overall design and structure, a categorization of such technologies is offered. The focus is on physical development of technologies that have been demonstrated and proven in real-world situations. In addition, prospective concepts that are likely to be adopted in the coming years are also taken into account.","PeriodicalId":198002,"journal":{"name":"2022 13th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121887128","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