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Requirement of key structure materials for Chinese big commercial aircraft
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作者 ZHANG Jun Shanghai Aircraft Design and Research Institute,COMAC,Shanghai 200232,China 《Baosteel Technical Research》 CAS 2010年第S1期89-,共1页
The demands of the big commercial aircraft are increasing.The quantities of new materials used in the big commercial aircraft are increasing too.With the rising volume of fiber composite applications on the military a... The demands of the big commercial aircraft are increasing.The quantities of new materials used in the big commercial aircraft are increasing too.With the rising volume of fiber composite applications on the military and civil aircrafts,there are great deal of demands of titanium alloy.For example,the usage of titanium alloys account for 15%in Airbus B787 and 10.3%in Military Transporter C-17.At the same time,some conventional critical structure materials,such as high strength steel,are still absolutely necessarily needed. 展开更多
关键词 MATERIAL big commercial aircraft titanium alloys high strength steel
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Conceptual Architecture for Remotely Piloted Operation Mode in Commercial Aircraft 被引量:1
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作者 LUO Yue WANG Miao +1 位作者 XIAO Gang WANG Guoqing 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2020年第2期274-287,共14页
With the increasing civil aviation passengers and the rapid development of aviation logistics,the study on remotely piloted operation(RPO)mode has received extensive attention.RPO mode constructs the piloting decision... With the increasing civil aviation passengers and the rapid development of aviation logistics,the study on remotely piloted operation(RPO)mode has received extensive attention.RPO mode constructs the piloting decisionmaking mode which involves the tripartite collaboration among airborne automatic/autonomous system,remote ground-based crews and air traffic control.In this paper,we describe the organizing architecture for commercial remotely piloted aircraft(CRPA)system and its components.Compared with the current operation mode,the new air-ground collaborative decision-making mode has been established with six different situations based on the type of the flight and the condition of the remote pilot.Taking airport surface operation as an experimental example,we model the airport surface operation process and compare the advantages and disadvantages between RPO mode and the current dual-pilot mode from the perspectives of time and operation coverage,and draw conclusions that RPO mode can basically cover the flight operations of the dual-pilot,improve the accuracy of pilot operations and greatly reduce response time by 48%in pre-flight inspection.The above research would be the foundation for the RPO development of commercial aircraft in China. 展开更多
关键词 remotely piloted operations(RPO) commercial remotely piloted aircraft(CRPA) airborne automatic/autonomous system flight process
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Optimization and verification of single pilot operations model for commercial aircraft based on biclustering method
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作者 Miao WANG Yue LUO +2 位作者 Kai HUANG Zhao PEI Guoqing WANG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2023年第5期286-305,共20页
Commercial aircraft crews have experienced a trend from five-person crew to dual-pilot crew.Arised from both technological and market demands,Single Pilot Operations(SPO)is considered an important development directio... Commercial aircraft crews have experienced a trend from five-person crew to dual-pilot crew.Arised from both technological and market demands,Single Pilot Operations(SPO)is considered an important development direction in modern aviation technology.In this paper,starting from Dual-Pilot Operations(DPO),the piloting process,decision-making process and decisionmaking mode of DPO for commercial aircraft are studied to obtain the operational requirements of SPO.Then,based on above analysis,the operational mechanism of SPO is studied and the core technology of SPO mode is proposed.Next,a new closed frequent bicluster mining algorithm named FsCluster is proposed for the optimization of the SPO model,and the other efficient bicluster mining algorithm named TsCluster is proposed for the analysis and verification of the SPO model.Finally,a typical flight phase scenario is modelled by Magic System of System,and combined with the proposed algorithms for analysis and verification to determine whether the SPO mode can meet the DPO requirements. 展开更多
关键词 commercial aircraft Differential bicluster Dual-pilot operations Single pilot operations System modelling
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Airworthiness engineering and practices of COMAC C919 airplane
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作者 Yuerang Zhao 《Aerospace Traffic and Safety》 2024年第1期20-26,共7页
This paper systematically summarizes the basic philosophy and principles of airworthiness that COMAC follows in the process of developing C919 large passenger aircraft.It carries out type certification along with the ... This paper systematically summarizes the basic philosophy and principles of airworthiness that COMAC follows in the process of developing C919 large passenger aircraft.It carries out type certification along with the aircraft development process,and plans and implements compliance activities for airplane design features.Targeting the airworthiness requirements,COMAC has also established an airworthiness management system,including design assurance system and continuing airworthiness system,to ensure that aircraft are designed in accordance with airworthiness requirements,to show compliance with airworthiness requirements and to continuously ensure the airworthiness of airplane by dealing with continuing airworthiness events in service. 展开更多
关键词 commercial aircraft Corporation of China Ltd.(COMAC) C919 airplane AIRWORTHINESS
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New reference trajectory optimization algorithm for a flight management system inspired in beam search 被引量:4
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作者 Alejandro MURRIETA-MENDOZA Bruce BEUZE +1 位作者 Laurane TERNISIEN Ruxandra Mihaela BOTEZ 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2017年第4期1459-1472,共14页
With the objective of reducing the flight cost and the amount of polluting emissions released in the atmosphere, a new optimization algorithm considering the climb, cruise and descent phases is presented for the refer... With the objective of reducing the flight cost and the amount of polluting emissions released in the atmosphere, a new optimization algorithm considering the climb, cruise and descent phases is presented for the reference vertical flight trajectory. The selection of the reference vertical navigation speeds and altitudes was solved as a discrete combinatory problem by means of a graphtree passing through nodes using the beam search optimization technique. To achieve a compromise between the execution time and the algorithm's ability to find the global optimal solution, a heuristic methodology introducing a parameter called ‘‘optimism coefficient was used in order to estimate the trajectory's flight cost at every node. The optimal trajectory cost obtained with the developed algorithm was compared with the cost of the optimal trajectory provided by a commercial flight management system(FMS). The global optimal solution was validated against an exhaustive search algorithm(ESA), other than the proposed algorithm. The developed algorithm takes into account weather effects, step climbs during cruise and air traffic management constraints such as constant altitude segments, constant cruise Mach, and a pre-defined reference lateral navigation route. The aircraft fuel burn was computed using a numerical performance model which was created and validated using flight test experimental data. 展开更多
关键词 Beam search commercial aircraft Flight time Flight management system Fuel burn FMS Trajectory optimization
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