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25 February 1989, Volume 9 Issue 01 Previous Issue    Next Issue

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DESIGN OF AIRBORNE VISUAL AND NEAR-INFRARED IMAGING SPECTROMETER Zhang Fu (Shanghai Institute of Technical physics,Academia Sinica) 1989, 9 (01):  1-5.  Abstract ( 1664 )   Save This paper describes a feasible design of imaging spectrometerwith area scan CCD sensor.The spectrometer has a number of remarkableadvantages,such as broad spectral range (0.4μm～1.1μm),high spectralresolution (9.2nm),a large number of spectral bands (76) and largeground scan field of view (30°) etc. Related Articles | Metrics

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FLUID FLOW AND PATTERN SELECTION IN DENDRITIC GROWTH——GROUND BASED IN SITU OBSERVATION Huang Tao Liu Shah Lu Deyang Zhou Yaohe Cheng Gongshan Zhang Fusheng (Northwestern Polytechnical University,Xian,China) 1989, 9 (01):  7-12.  Abstract ( 2009 )   Save Model experiments on fluid flow and pattern selection havebeen done by creating flow in liquid region close to the growth fronts indendritic growth of SCN-aceton dilute alloys.The kinetics and morphologyof dendritic growth were measured as a function of thermal gradient,growth velocity and flow velocity.The present paper provides the firststudy of convection effects on constrained dendritic and cellular growthwhich focuses on the tip morphology and develops a boundary layeranalysis.All of the problems addressed have application to the interpreta-tion of the experimental phenomena arising from solodification and fiuiddynamics on earth and space laboratory. Related Articles | Metrics

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DEVELOPMENT OF LOCAL LIQUID COOLing GARMENT Du Guojie Ge Shenran Lin Ziyuan (Institute of Space Medico-Engineering,Beijing) 1989, 9 (01):  13-23.  Abstract ( 1571 )   Save This paper systematically describes the design,characteristicsof pattern technology method,functional indications and test results ofexperiments on local liquid cooling garment. Related Articles | Metrics

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INITIAL RESEARCH ON USING SATELLITE QUALIFICATION TEST MODEL IN STEAD OF FLIGHT MODEL IN FLIGHT TEST Liu Haitao (Chinese Academy of Space Technology) 1989, 9 (01):  24-30.  Abstract ( 1644 )   Save This paper briefly describes the reasons and experiences inusing qualifieation test model in stead of flight model in satellite develop-ment abroad.The feasibility and effecting factors of using qualificationtest model in.stead of flight model are emphasized.Some standard applicationmodes and conducted application methods are presented. Related Articles | Metrics

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APPLICATION OF CAMAC IN AUTOMATIC CHECKOUT OF SATELLITE SYSTEMS Zhang Hanying Han Qingyu Lu Huaigen (Chinese Academy of Space Technology) 1989, 9 (01):  31-36+5.  Abstract ( 1816 )   Save In this paper,the present status of the application of CAMACin the automatic checkout of satellite systems is described.Two examplesof the application are mentioned,the first one is the CAMAC overall satellitetesting system,and the second is the CAMAC test system for satellite attitudecontrol and program control subsystem.Finally,the advantages of usingCAMAC are discussed. Related Articles | Metrics

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ANALYSIS OF WIND EFFECTS ON SOUNDING ROCKET TRAJECTORY Li Dayao Li Linfan 1989, 9 (01):  37-47.  Abstract ( 1707 )   Save This paper derives a set of differential equations which mustbe satisfied by the velocity elevation angle and velocity azimuth angle forsounding rocket.Under some approximation assumptions,the effects of thewind on the sounding rocket trajectory are analyzed. Related Articles | Metrics

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INVESTIGATION OF UV IRRADIATION TEST METHOD OF THERMAL CONTROL COATINGS Jiang Jingshan Chen Jiefeng Ge Jianjun Chen Guodun 1989, 9 (01):  48-52.  Abstract ( 1748 )   Save Several organic thermal control coatings were subjected to si-mulated solar ultraviolet radiation(UV) in vacuum.The changes of characteristics of coatings in vacuum and in air weremeasured to compare the difference between in situ test and not on situ testof coatings under UV radiation. Related Articles | Metrics

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METHODS OF CONTROLLING SPACECRAFT MAGNETIC PROPERTIES Song Yougao (Beijing Institute of Environmental Test Engineering) 1989, 9 (01):  53-58+47.  Abstract ( 1662 )   Save Because of the needs of the function and structure of a space-craft,it always have certain magnetic properties.The spacecraft magneticproperties may disturb the attitude of the spacecraft and may affect the perfo-rmance of the sensitive instruments,aboard,thus,must be controlled in theprocess of a spacecraft design and development.In this paper,space magne-tic field and the sources of spacecraft magnetic properties are briefly presen-ted.The design criteria and test methods are emphatically clarified for con-trolling spacecraft properties. Related Articles | Metrics

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THE DYNAMIC CALCULATION FOR THE FOUNDATION STRUCTURE OF THE REMOTE SENSING SATELLITE TRACKING ANTENNA Xiong Jiaxin Geng Zhixun (Beijing Especial Engineering Design and Research Institute) Qiu Hongxian (Remote Sensing Satellite Ground Station Chinese Academy of Sciences) 1989, 9 (01):  62-69+6.  Abstract ( 1709 )   Save This paper describes a method of the dynamic calculaion for the antenna foundation structure and outlines some key points for the foundationdesign.Emphasis is placed on the calculation of static and dynamic horizontalvibration frequency in order to calculate the coordination frequency.Itscalculating results are considerably close to the practical measurements. Related Articles | Metrics