Welding in aviation industry has become one of the dominate processing technologies for manufacturing flying apparatus.The percentage of welded structures in designs of new flying apparatus has been continuously grow...Welding in aviation industry has become one of the dominate processing technologies for manufacturing flying apparatus.The percentage of welded structures in designs of new flying apparatus has been continuously growing up.Welding technology provides a freedom and guarantee to new structure design and new material application. Technical and economic benefits have been obtaining in application of newly developed welding technologies and achievements in research, such as, SPF/DB,electron beam welding, breezing,low stress nondistortion welding etc.展开更多
The data envelopment analysis （DEA） is used to evaluate operation efficiency of 17 listed companies in China aviation industry from 2006 to 2011, and make longitudinal analysis for the operation efficiency. In addit...The data envelopment analysis （DEA） is used to evaluate operation efficiency of 17 listed companies in China aviation industry from 2006 to 2011, and make longitudinal analysis for the operation efficiency. In addition, the reason of changing efficiency is dynamically evaluated by Malmquist productivity index. The empirical results show that average operation efficiency of 17 listed companies in China aviation industry is less than 1, which means that the operation activities of aviation industry exist diseconomies characteristic, technological progress efficiency is a major influenced factor展开更多
The civil aviation industry, with the key role of promoting hitech development, enhancing national strength, providing work opportunities, and guaranteeing aviation safety, is regarded as one of the leading hi-tech in...The civil aviation industry, with the key role of promoting hitech development, enhancing national strength, providing work opportunities, and guaranteeing aviation safety, is regarded as one of the leading hi-tech industries in the industrialized world, and civil aircraft are the industry’s basic products, which are value-added, andpromote the production of their展开更多
Not long ago, Bao Peide, DeputyDirector-General of the Civil AviationAdminstration of China (CAAC),briefed Chinese and foreign reporters on thegeneral development trend of China’s civilaviation industry.
This paper focuses on the analysis of the aviation industry machining technology transformation,and its current development status.The entire development plan for numerical control machine tool needs to be perfected,a...This paper focuses on the analysis of the aviation industry machining technology transformation,and its current development status.The entire development plan for numerical control machine tool needs to be perfected,and the balance of numerical control technology development has to be strengthened.Additionally,the utilization rate of numerical control machines is relatively low;thus,raise the rate of equipment,numerical control,and numerical control equipment usage,and enhance the mechanical processing technology management task.Its aim is to improve aviation industry machining efficiency,which leads to a good development in China's aviation industry.展开更多
Before 1949 when the People’s Republic of China was founded, China had a very weak aviation foundation. Between 1910, when the government of the Qing Dynasty set up a plane factory, and 1949, there were just dozens o...Before 1949 when the People’s Republic of China was founded, China had a very weak aviation foundation. Between 1910, when the government of the Qing Dynasty set up a plane factory, and 1949, there were just dozens of poor-equipped facilities that展开更多
China National Aviation Industry Corpora-tion (CAIC) has developed a complete system for production and sale of leading products mini-vehicles (including mini-cars), as well as e-conomic and luxurious coaches, tank tr...China National Aviation Industry Corpora-tion (CAIC) has developed a complete system for production and sale of leading products mini-vehicles (including mini-cars), as well as e-conomic and luxurious coaches, tank trucks, wrecker truck, garbage trucks, motorcycles展开更多
文摘Welding in aviation industry has become one of the dominate processing technologies for manufacturing flying apparatus.The percentage of welded structures in designs of new flying apparatus has been continuously growing up.Welding technology provides a freedom and guarantee to new structure design and new material application. Technical and economic benefits have been obtaining in application of newly developed welding technologies and achievements in research, such as, SPF/DB,electron beam welding, breezing,low stress nondistortion welding etc.
基金supported by the Humanities and Social Science Foundation of the Chinese Ministry of Education under Grant No.09YJA630133
文摘The data envelopment analysis （DEA） is used to evaluate operation efficiency of 17 listed companies in China aviation industry from 2006 to 2011, and make longitudinal analysis for the operation efficiency. In addition, the reason of changing efficiency is dynamically evaluated by Malmquist productivity index. The empirical results show that average operation efficiency of 17 listed companies in China aviation industry is less than 1, which means that the operation activities of aviation industry exist diseconomies characteristic, technological progress efficiency is a major influenced factor
文摘The civil aviation industry, with the key role of promoting hitech development, enhancing national strength, providing work opportunities, and guaranteeing aviation safety, is regarded as one of the leading hi-tech industries in the industrialized world, and civil aircraft are the industry’s basic products, which are value-added, andpromote the production of their
文摘Not long ago, Bao Peide, DeputyDirector-General of the Civil AviationAdminstration of China (CAAC),briefed Chinese and foreign reporters on thegeneral development trend of China’s civilaviation industry.
文摘This paper focuses on the analysis of the aviation industry machining technology transformation,and its current development status.The entire development plan for numerical control machine tool needs to be perfected,and the balance of numerical control technology development has to be strengthened.Additionally,the utilization rate of numerical control machines is relatively low;thus,raise the rate of equipment,numerical control,and numerical control equipment usage,and enhance the mechanical processing technology management task.Its aim is to improve aviation industry machining efficiency,which leads to a good development in China's aviation industry.
文摘Before 1949 when the People’s Republic of China was founded, China had a very weak aviation foundation. Between 1910, when the government of the Qing Dynasty set up a plane factory, and 1949, there were just dozens of poor-equipped facilities that
文摘China National Aviation Industry Corpora-tion (CAIC) has developed a complete system for production and sale of leading products mini-vehicles (including mini-cars), as well as e-conomic and luxurious coaches, tank trucks, wrecker truck, garbage trucks, motorcycles
