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An Overview of Performance Characteristics, Experiencesand Trends of Aerospace Engine Bearings Technologies 被引量:27
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作者 Ebert Franz-Josef 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2007年第4期378-384,共7页
In this paper, the operating conditions, technical requirements, performance characteristics, design ideas, application experiences and development trends of aerospace engine bearings, including material technology, i... In this paper, the operating conditions, technical requirements, performance characteristics, design ideas, application experiences and development trends of aerospace engine bearings, including material technology, integration design and reliability, are reviewed. The development history of aerospace engine bearing is recalled briefly at first. Then today's material technologies and the high bearing performances of the bearings obtained through the new materials are introduced, which play important roils in the aeroengine bearing developments. The integration design ideas and practices are explained to indicate its significant advantages and importance to the aerospace engine bearings. And the reliability of the shaft-bearing system is pointed out and treated as the key requirement with goals for both engine and bearing. Finally, as it is believed that the correct design comes from practice, the pre-qualification rig testing conducted by FAG Aerospace GmbH & Co. KG is briefly illustrated as an example. All these lead to the development trends of aerospace engine bearings from different aspects. 展开更多
关键词 aerospace engine bearing performance characteristic material technology integrated bearing design reliability system cost
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国外期刊《Journal of Aerospace Engineering,Proceedings of the IMechE Part G》2008年第3期目录
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《航空学报》 EI CAS CSCD 北大核心 2008年第4期1091-1091,共1页
《Journal of Aerospace Engineering》是交流宇航工程领域前沿技术最新研究成果的科技期刊。它主要刊载各种民用和军用飞机、航天器及其支持系统的理论和应用方面的论文。该刊涉及面广,涵盖了研究、设计、发展、生产、操作、服务和维... 《Journal of Aerospace Engineering》是交流宇航工程领域前沿技术最新研究成果的科技期刊。它主要刊载各种民用和军用飞机、航天器及其支持系统的理论和应用方面的论文。该刊涉及面广,涵盖了研究、设计、发展、生产、操作、服务和维修、组成和辅助设备、安全性和可靠性。刊载具体专业范围:结构和机械设计、流体力学和空气动力学、推进系统和燃料、发射和着陆系统、摩损学、水力学和气体力学、试验和性能、飞控系统和航空控制系统、机械制造和质量保证、材料学。 展开更多
关键词 气体力学 飞控系统 国外期刊 Journal of aerospace Engineering Proceedings of the IMechE Part G 领域前沿 流体力学 宇航工程 科技期刊 目录 检索工具 机械制造 机械工程 摩损
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China Academy of Strategy on Aerospace Engineering Science and Technology Inaugurated
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作者 Tian Sheng 《Aerospace China》 2012年第1期17-17,共1页
China Academy of Strategy on Aerospace Engineering Science and Technology (CAEST) was formally established on December 31,2011.The academy was jointly established by Chinese Academy of Engineering (CAE),China Aerospac... China Academy of Strategy on Aerospace Engineering Science and Technology (CAEST) was formally established on December 31,2011.The academy was jointly established by Chinese Academy of Engineering (CAE),China Aerospace Science 展开更多
关键词 CASC China Academy of Strategy on aerospace Engineering Science and Technology Inaugurated
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Construction of QIAN Xuesen's Meta-Synthetic Wisdom System and Aerospace Hall for Workshop for Meta-Synthetic Engineering
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作者 ZHANG Wenyu XUE Yu +1 位作者 YANG Fengxia YU Qi 《Aerospace China》 2017年第2期40-46,共7页
China's aerospace industry is facing a major task of increasing the reform of aerospace management system and speeding up civil-military integration, which leads to an urgent demand for new aerospace think tank pr... China's aerospace industry is facing a major task of increasing the reform of aerospace management system and speeding up civil-military integration, which leads to an urgent demand for new aerospace think tank products. Thankfully, with "information space" as the carrier, the "systems science" as the guidance, and QIAN Xuesen's "metasynthetic wisdom system" as the core, QIAN Xuesen think tank provides the decision support for China to develop an aerospace knowledge economy and to continuously enhance the "space soft power". In this paper, the framework of the meta-synthetic wisdom system guided by systems science is presented, the relationship between basic ideas of QIAN Xuesen think tank and meta-synthetic wisdom system is explained and the construction items of aerospace hall of the workshop for meta-synthetic engineering(aerospace HWMSE) are analyzed. 展开更多
关键词 QIAN Xuesen think tank meta-synthetic wisdom system aerospace hall of workshop for meta-synthet-ic engineering
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China Aerospace Ascends to A New Height in Engine
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作者 Zhang Meishu, Li Yunxia 《Aerospace China》 2012年第3期18-19,共2页
The Academy of Aerospace Liquid Propulsion Technology (AALPT) successfully completed the long-duration captive firing test of a new generation of 120-ton thrust liquid oxygen/kerosene rocket engine. The engine had bee... The Academy of Aerospace Liquid Propulsion Technology (AALPT) successfully completed the long-duration captive firing test of a new generation of 120-ton thrust liquid oxygen/kerosene rocket engine. The engine had been stored for three years 展开更多
关键词 China aerospace Ascends to A New Height in Engine HIGH TEST
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Saturation attack based route planning and threat avoidance algorithm for cruise missiles 被引量:12
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作者 Guanghui Wang Xuefeng Sun +1 位作者 Liping Zhang Chao Lv 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2011年第6期948-953,共6页
According to the characteristic of cruise missiles,navigation point setting is simplified,and the principle of route planning for saturation attack and a concept of reference route are put forward.With the help of the... According to the characteristic of cruise missiles,navigation point setting is simplified,and the principle of route planning for saturation attack and a concept of reference route are put forward.With the help of the shortest-tangent idea in route-planning and the algorithm of back reasoning from targets,a reference route algorithm is built on the shortest range and threat avoidance.Then a route-flight-time algorithm is built on navigation points.Based on the conditions of multi-direction saturation attack,a route planning algorithm of multi-direction saturation attack is built on reference route,route-flight-time,and impact azimuth.Simulation results show that the algorithm can realize missiles fired in a salvo launch reaching the target simultaneously from different directions while avoiding threat. 展开更多
关键词 aerospace system engineering control and navigation technology of aero-craft mission planning route planning cruise missile saturation attack threat avoidance.
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STABILITY OF LAMINATED COMPOSITE CIRCULAR CONICAL SHELLS UNDER EXTERNAL PRESSURE
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作者 王虎 王俊奎 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1991年第12期1153-1161,共9页
In this paper, based on the mixed-type theory developed by the same authors, a theoretical analysis is presented for the stability of laminated composite circular conical shells under external pressure. The formulas f... In this paper, based on the mixed-type theory developed by the same authors, a theoretical analysis is presented for the stability of laminated composite circular conical shells under external pressure. The formulas for critical external pressure are obtained by using the potential energy variation principle. Very good agreement is shown between the theoretical prediction of critical external pressure and the experimental data. Finally, the influence of some parameters on critical external pressure is discussed numerically. The mixed-type theory developed by the same authors and the results obtained in this paper are very useful in aerospace engineering design. 展开更多
关键词 aerospace engineering Laminated composites STABILITY
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The History of the Portuguese Aviation— A Summary
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作者 Fernando M. S. P. Neves Jorge M. M. Barata André R. R. Silva 《Open Journal of Applied Sciences》 2016年第10期667-695,共29页
This article is intended as a summary of a new area of study on the History of the Portuguese Aeronautics and Aerospace and addresses issues such as: the forthcoming of the aircraft at Portugal, its military and civil... This article is intended as a summary of a new area of study on the History of the Portuguese Aeronautics and Aerospace and addresses issues such as: the forthcoming of the aircraft at Portugal, its military and civilian use;the scope of early days concerning Portuguese intercontinental flights and their authors;the development of air navigation devices by Portuguese inventors in the 1920s and 30s;the Aeronautics industry and the need to develop expertise in Aeronautical/Aerospace Engineering in Portugal during the centuries XX and XXI. 展开更多
关键词 Admiral Coutinho Precision Sextant Gago Coutinho Sacadura Cabral Sarmento Beires AERONAUTICS aerospace Engineering UBI IST AFA
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Recent active thermal management technologies for the development of energy-optimized aerospace vehicles in China 被引量:11
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作者 Jixiang WANG Yunze LI +3 位作者 Xiangdong LIU Chaoqun SHEN Hongsheng ZHANG Kai XIONG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2021年第2期1-27,共27页
Recently, the development of modern vehicles has brought about aggressive integration and miniaturization of on-board electrical and electronic devices. It will lead to exponential growth in both the overall waste hea... Recently, the development of modern vehicles has brought about aggressive integration and miniaturization of on-board electrical and electronic devices. It will lead to exponential growth in both the overall waste heat and heat flux to be dissipated to maintain the devices within a safe temperature range. However, both the total heat sinks aboard and the cooling capacity of currently utilized thermal control strategy are severely limited, which threatens the lifetime of the on-board equipment and even the entire flight system and shrink the vehicle’s flight time and range. Facing these thermal challenges, the USA proposed the program of "INVENT" to maximize utilities of the available heat sinks and enhance the cooling ability of thermal control strategies. Following the efforts done by the USA researchers, scientists in China fought their ways to develop thermal management technologies for Chinese advanced energy-optimized airplanes and spacecraft. This paper elaborates the available on-board heat sinks and aerospace thermal management systems using both active and passive technologies not confined to the technology in China. Subsequently, active thermal management technologies in China including fuel thermal management system, environment control system, non-fuel liquid cooling strategy are reviewed. At last, space thermal control technologies used in Chinese Space Station and Chang’e-3 and to be used in Chang’e-5 are introduced.Key issues to be solved are also identified, which could facilitate the development of aerospace thermal control techniques across the world. 展开更多
关键词 aerospace engineering Efficiency promotion Fluid dynamics Heat and mass transfer Thermal management
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A brief overview of the School of Aerospace Engineering of Tsinghua University
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作者 Nanxiang GUAN Bing WANG Luming LI 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2018年第9期1805-1814,共10页
This article provides a brief overview of the teaching and research at the School of Aerospace Engineering(SAE) to celebrate the 80 th anniversary of the establishment of aeronautics as a discipline at Tsinghua Univer... This article provides a brief overview of the teaching and research at the School of Aerospace Engineering(SAE) to celebrate the 80 th anniversary of the establishment of aeronautics as a discipline at Tsinghua University. The evolution of the school, undergraduate/graduate students and faculty members, and research activities and achievements have been described. The research input including research funding and research projects are summarized, showing a diversity of funding sources and a significant growth in either sum total or spending per researcher. The achievements including publications and inter/national academic awards are also introduced. It can be seen that the level of academic publications has been growing over the past decades. In addition,four representative research achievements have been briefly described to show the scientific contributions of the school. 展开更多
关键词 aerospace engineering FUNDING PUBLICATION Research activity Student education
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国外期刊《Journal of Aerospace Engineering,Proceedings of the IMech E Part G》2009年第5,6期目录(英文)
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《航空学报》 EI CAS CSCD 北大核心 2009年第12期I0033-I0034,共2页
关键词 Journal of aerospace Engineering Proceedings of the IMech E Part G 国外期刊 目录 检索工具 英文
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国外期刊《Journal of Aerospace Engineering,Proceedings of the IMechE Part G》2008年第7期目录
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《航空学报》 EI CAS CSCD 北大核心 2009年第2期385-385,共1页
关键词 Journal of aerospace Engineering Proceedings of the IMechE Part G 国外期刊 目录 检索工具
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Aerodynamic design optimization by using a continuous adjoint method 被引量:7
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作者 LUO JiaQi XIONG JunTao LIU Feng 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第7期1363-1375,共13页
This paper presents the fundamentals of a continuous adjoint method and the applications of this method to the aerodynamic design optimization of both external and internal flows.General formulation of the continuous ... This paper presents the fundamentals of a continuous adjoint method and the applications of this method to the aerodynamic design optimization of both external and internal flows.General formulation of the continuous adjoint equations and the corresponding boundary conditions are derived.With the adjoint method,the complete gradient information needed in the design optimization can be obtained by solving the governing flow equations and the corresponding adjoint equations only once for each cost function,regardless of the number of design parameters.An inverse design of airfoil is firstly performed to study the accuracy of the adjoint gradient and the effectiveness of the adjoint method as an inverse design method.Then the method is used to perform a series of single and multiple point design optimization problems involving the drag reduction of airfoil,wing,and wing-body configuration,and the aerodynamic performance improvement of turbine and compressor blade rows.The results demonstrate that the continuous adjoint method can efficiently and significantly improve the aerodynamic performance of the design in a shape optimization problem. 展开更多
关键词 continuous adjoint method aerodynamic design optimization transonic flow computational fluid dynamics aerospace engineering
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A perspective on high-order methods in computational fluid dynamics 被引量:3
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作者 ZhiJian Wang 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2016年第1期1-6,共6页
There has been an intensive international effort to develop high-order Computational Fluid Dynamics(CFD) methods into design tools in aerospace engineering during the last one and half decades. These methods offer the... There has been an intensive international effort to develop high-order Computational Fluid Dynamics(CFD) methods into design tools in aerospace engineering during the last one and half decades. These methods offer the potential to significantly improve solution accuracy and efficiency for vortex dominated turbulent flows. Enough progresses have been made in algorithm development, mesh generation and parallel computing that these methods are on the verge of being applied in a production design environment. Since many review papers have been written on the subject, I decide to offer a personal perspective on the state-of-the-art in high-order CFD methods and the challenges that must be overcome. 展开更多
关键词 CFD HIGH-ORDER large eddy simulation aerospace engineering
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Influence of residual stresses on failure pressure of cylindrical pressure vessels 被引量:4
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作者 M.Jeyakumar T.Christopher 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2013年第6期1415-1421,共7页
The utilization of pressure vessels in aerospace applications is manifold.In this work,fnite element analysis(FEA)has been carried out using ANSYS software package with 2D axisymmetric model to access the failure pr... The utilization of pressure vessels in aerospace applications is manifold.In this work,fnite element analysis(FEA)has been carried out using ANSYS software package with 2D axisymmetric model to access the failure pressure of cylindrical pressure vessel made of ASTM A36 carbon steel having weld-induced residual stresses.To fnd out the effect of residual stresses on failure pressure,frst an elasto-plastic analysis is performed to fnd out the failure pressure of pressure vessel not having residual stresses.Then a thermo-mechanical fnite element analysis is performed to assess the residual stresses developed in the pressure vessel during welding.Finally one more elasto-plastic analysis is performed to assess the effect of residual stresses on failure pressure of the pressure vessel having residual stresses.This analysis indicates reduction in the failure pressure due to unfavorable residual stresses. 展开更多
关键词 aerospace engineering ASTM A36 Finite element analysis Pressure vessels Welding residual stress
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