The 20th Anniversary Celebration Held

The Civil Aviation Shanghai Polytechnic School(CASPS)held a ceremony to celebrate the20th anniversary ofits founding on the morning of October28.CAAC Vice Minister Yang Guoqing and Xia Xinghua,CAAC East China Administration Party Secretary andDirector,attended the ceremony and delivered speeches.Present at the ceremony were Li Wenxin,Partysecretary and vice president of China Eastern Airlines Group,Fan Hongxi,president of Shanghai Airlines Co Ltd,and CaiJun,chairman of the Tr…     

Development and Reform Have No End

The soon-to-go year 2003 can be called a year of reform for civil aviation, to be exact, a year inwhich the civil aviation reform went on from focused to overall advancement.In accordance with the targets and arrangement designated by the "Civil Aviation System Re-form Program" and the Civil Aviation Working Conference held early this year, organizational reformand administrative system reform were completed this year following the launch of a new round ofcivil aviation reforms in 2002, in …     

Flying with China into a New Era of Aviation ▲GAMECO

Based at Guangzhou's Baiyun Interna-tional Airport,Guangzhou Aircraft Mainte-nance Engineering Company is one of the fewleading facilities in China offering aircraftmaintenance at international standards andpremium quality service to customer airlines.GAMECO is now certified by the Civil Avia-tion Administration of China (CAAC) and theFederal Aviation Administration (FAA) inthe US to provide repair and overhaul on Boe-     

Planting Hopes Yielding the Future

Following the publication of this issue, China Civil Aviation has passed through a whole year. At the threshold of the new century a year ago, Civil Aviation Economics and Technology, which had had more than 20 years in its history of publication and played an important role in instructing the work of civil aviation, was renamed China Civil Aviation upon decision of the CPC Committee of CAAC and approval of the State Press and Publication General Administration. Since then it has gree…     

China Civil Aviation Reform to Be Continued and Deepened this Year

On February 5, the annual working conference of China civil aviation was held. The purpose of this year's conference is to let reform guide the whole industry's development in a continuous, rapid and healthy way. At the conference, the reform blueprint approved by the State Council drew most of the attention, according to which, 9 airlines under direct leadership of CAAC will be reorganized as 3 air groups, which will be subject to market competition.Other companies, on the basis of their o…     

Keeping Pace With the New Century

Under the support of people in and outSide the circle and ~ tense preparations andefforts, the first edition of China Civil Aviation magazine has finally come out, keepingpace with the entry of human beings into the new centUry.The Predecessor of China Civil AViation is Civil Aviation Economics aha Technologymagazine, which was founded in 1975. For more than 20 years since itS first application, ithas won the recognition and commendation of management and technology Personnel ofthe gover…     

International Civil Aviation Co-operation Reinforced Wu Nianzu attends Asia Aviation Exhibition

Wu Nianzu, chairman and president of the Shanghai Airport (Group) Company, was invited by Huang Wenliang, director of Singapore Civil Aviation Administration, to attend 2004 Asia Aviation Exhibition held in Singapore on February 22 to 28. His party included Wang Guangdi, vice president of the company.They attended the opening ceremony, visited the     

First Summit On China Airports in Shanghai

he first summit on China airports was held inShanghai from April 4 to 6. The meeting wassponsored by Airports Council International (ACI),China Civil Aviation and JF Pearson.ACI Director General Robert Aaronson, ZhangGuanghui, Director General of Airport Department ofCAAC, Wu Nianzu, Chairman and President ofShanghai Airport Authority, attended the summit anddelivered speeches.The summit discussed and analyzed the new policiesof China's civil aviation industry and howChinese ai…     

Effects of the Fabrication Processes of NC-Si： H Films on Their Mechanical Properties

Studies of nanoindentation were performed on nc-Si：H films to evaluate the effects of the fabrication processes on their mechanical properties. It is observed that with the decrease of the SiH4 contents, the grain size of the films increases gradually, and as does the crystalline volume fraction. The smaller the grains become, the more homogeneous the films, and the more even the hardness as well as the modulus will be. The hardness and the modulus will increase with the substrate＇s temperature rising. The hardness and the modulus of the nc-Si：H films on the Si substrate prove to be higher than those on the glass substrate given the same technology parameters. How- ever, the films on the glass substrate appear to be more homogeneous.     

Effects of the Fabrication Processes of NC-Si:H Films on Their Mechanical Properties

Studies of nanoindentation were performed on nc-Si:H films to evaluate the effects of the fabrication processes on their mechani-cal properties. It is observed that with the decrease of the SiH4 contents, the grain size of the films increases gradually, and as does the crystalline volume fraction. The smaller the grains become, the more homogeneous the films, and the more even the hardness as well as the modulus will be. The hardness and the modulus will increase with the substrate’s temperature rising. The hardness and the modulus of the nc-Si:H films on the Si substrate prove to be higher than those on the glass substrate given the same technology parameters. How-ever, the films on the glass substrate appear to be more homogeneous.     

CIVIL AVIATION ECON.& TECH.Brief Introduction

Civil Aviation Economics and Technology (CAET) startedpublication in 1975,it was named Foreign Civil Aviation Science andTechnology at that time.In 1982,it changed name as Civil AviationEconomics and Technology,and was put on public distribution in1989;it was a comprehensive and professional magazine of CAACwhich was early put on public distribution.In recent years,thanks tothe concern,support and assistance of the leaders of CAAC,and thereading public and through the common efforts of all staffs of the     

Reorganization of China''''s Civil Aviation Takes Shape

Following a long period of consideration and discussion, thereorganization of airlines and air service enterprises under the directadministration of CAAC has finally been launched.On April 27, the CAAC held a meeting posting the reorganization planbased on the principle of "self-willingness of the enterprises, guidance of thegovernment and giving play to strong points of groups". According to theplan, new airline groups will be organized, based on Air China, China Easternand China Southe…     

Monthly bries(Domestic)

▲Apr. 1 China Eastern Airlines launchedair service from Shanghai to London.▲Apr. 4Cathay Pacific celebrated the20th anniversary of Hong Kong-Germany airservice operation.▲Apr. 5JAL signed air-cateringagreement with Xi'an Civil Aviation Air CateringCompany.▲Apr. 6Huangshan Airport announcedthat it handled 50000 passengers from Jan. toMar., up 8.84% than the last year period, and thepassenger seat rate was also increased by 24.7%.▲Apr.6The 2nd Sino-US AirTransportation Seminar, …     

DOMESTIC BRIERS

▲Jun. 1Air China Cargo Co. Ltd.implemented air carriers receiving regula-tions officially in order to make its cargotransportation clearing management compat-ible with the international practice.▲Jun. 8 Two individually-runenterprises, Chunqiu Airlines and AukaiAirlines, got the approval from CAAC toestablish.▲Jun. 8 Hainan Airlines entrustedCivil Aviation University of China (CAUC)to train the first pilot students with 4-yearundergraduate courses of the common higheducation.▲J…     

DOMESTIC BRIEFS Mar.1-31,2003

Mar. 1 China Eastern NorthwestAirlines and China Eastern Yunnan Airlinesstarted to use MU as their unified domesticflight code, which will top their internationalflights since Mar. 30.Mar. 1 Air China achieved 38 yearssafe operation on Chengdu-Lhasa service.Mar. 2 The fuselage of Chinese firstprivate business aircraft rolled out atShijiazhuang, which expects to make the firstflight in July.From Mar. 2 to June, Cathay Pacificwould provide a trial service of "air e-mail" infre…     

DOMESTIC BRIEFS Dec.1-31,2006

▲Dec. 1 National Civil Aviation Anti-collision Work Conference was held inBeijing.▲ Dec. 4 Initiation of Phase-IIIreconstruction and expansion project ofUrumqi Airport received approval from theState Development and Reform Commission.▲Dec. 6 The ATM Bureau of CAACheld a project construction coordinationmeeting in Hefei.▲Dec. 7 The First China Civil AviationOil Handler Skill Contest and Selection ofCivil Aviation Oil Handler began inGuangzhou.▲Dec. 7 China Civil Aviation…     

Ramada, A Successful Example

After entry into the WTO, China's hotels are being challenged by the global economy and overseas counterparts. They should seek creation and development to fight against the fierce competition. Ramada Pudong Hotel, managed by the Shanghai Airport Group Civil Aviation Property Company Ltd, has become a successful example in creative management.     

Space Flight Validation of Design and Engineering of the ZDPS-1A Pico-satellite

The ZDPS-1A pico-satellites are the first satellites in China within the 1-10 kg mass range that are successfully operated on orbit. Unlike common pico-satellites, they are designed to be "larger but stronger" with more powerful platforms and unique payloads so as to bear a better promise for real applications. Through their space flight mission, the functionality and performance of the two flight models are tested on orbit and validated to be mostly normal and in consistency with design and ground tests with only several inconforming occasions. Moreover, they have worked properly on orbit for one year so far, well exceeding their life expectancy of three months. Therefore, the space flight mission has reached all its goals, and verified that the design concept and the engineering process of the picosatellites are sufficient in allowing them the desired functionality and performance in, and the adaption to the launch procedure and the low-Earth orbit space environment. In the foreseeable future, the platform together with the design concept and the engineering process of the pico-satellites are expected to be applied to more complicated real space applications.     

Airport Project Goes Smoothly

The Shanghai Airport Group Company has set up a headquarters to command a project to refurbish Pudong and Hongqiao airports. Construction on Pudong Airport will be completed by the end of 2007, while that on Hongqiao Airport will be finished by the end of 2009.     

Generalized Kutta–Joukowski theorem for multi-vortex and multi-airfoil flow(a lumped vortex model)

For purpose of easy identification of the role of free vortices on the lift and drag and for purpose of fast or engineering evaluation of forces for each individual body,we will extend in this paper the Kutta–Joukowski(KJ) theorem to the case of inviscid flow with multiple free vortices and multiple airfoils. The major simplification used in this paper is that each airfoil is represented by a lumped vortex,which may hold true when the distances between vortices and bodies are large enough. It is found that the Kutta–Joukowski theorem still holds provided that the local freestream velocity and the circulation of the bound vortex are modified by the induced velocity due to the outside vortices and airfoils. We will demonstrate how to use the present result to identify the role of vortices on the forces according to their position,strength and rotation direction. Moreover,we will apply the present results to a two-cylinder example of Crowdy and the Wagner example to demonstrate how to perform fast force approximation for multi-body and multi-vortex problems. The lumped vortex assumption has the advantage of giving such kinds of approximate results which are very easy to use. The lack of accuracy for such a fast evaluation will be compensated by a rigorous extension,with the lumped vortex assumption removed and with vortex production included,in a forthcoming paper.