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2003 Vol. 29, No. 8

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Design and realization of airport refueling automatic system based on DCS
Zhang Dahua, Qiu Lihua, Wang Zongxue, Chen Yuanfu
2003, 29(8): 659-662.
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Abstract:
In order to enhance the automatic level of civil airport refueling system, the principle and method of DCS (distributed control system) was applied to design and realize airport refueling automatic systems. According to the principle of "distributed control and centralized management", the system st...
Influence of ambient pressure on aerospike nozzle base pressure
Li Junwei, Liu Yu
2003, 29(8): 663-667.
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Abstract:
In order to understand the influence of ambient pressure on aerospike nozzle base pressure, the implicit NND(non-oscillation, no free coefficients dissipative) scheme was employed to solve 2-D laminar N-S equations. Aerospike nozzle flow fields under different CNPR (i.e. nozzle pressure ratio) witho...
Pareto genetic algorithms for multi-objective optimization of aircraft conceptual design
Fang Weiguo, Shi Ruifeng
2003, 29(8): 668-672.
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Abstract:
Based on the Pareto optimal conception, a kind of MOGA(multi-objective genetic algorithms) seeking non-inferior solution set of MO problems was proposed, while the filtering of non-inferior solutions and the measure of fitness degree were discussed as an emphasis. The algorithm proposed was applied ...
Study on GPS receiver autonomous integrity monitoring
Liu Zhun, Chen Zhe
2003, 29(8): 673-676.
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Abstract:
It proves that least square residual method is equal to parity space method in detection rule. A novel GPS(global positioning system) RAIM(receiver autonomous integrity monitoring) algorithm is presented. The results show that it provides high availability, low missed detection and sensitive to faul...
Application of tree classifier in the image diagnosis of the adhesive quality about the multi-layered structure
Zhang Jitang, Lu Hongnian
2003, 29(8): 677-681.
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Abstract:
When the adhesive quality in multi-layered structure (steel shell, under layer and insulation layer)which is used in the solid rocket motor is diagnosed,the resonance between the echoes is used to obtain the signal characteristics, i.e. delay time. Extracting the signal characteristics and recognizi...
Rate of initiation and propagation in electron beam curing of epoxy resins
Sui Gang, Zhang Zuoguang, Li Min, Li Fengmei
2003, 29(8): 682-685.
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Abstract:
The kinetic studies on electron beam (EB) curing of epoxy resins were made. The experimental results manifested that a second-order reaction is involved during the production of protonic acid deriving from radiation decomposition of diaryliodonium salts initiator and the decomposition kinetic consta...
Study on reaction rate and kinetic constant in radiation curing of epoxy resins
Sui Gang, Zhang Zuoguang, Li Min, Li Fengmei
2003, 29(8): 686-690.
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Abstract:
The kinetic studies on electron beam curing of epoxy resins were made in this paper. The kinetic characteristics of different epoxy resin in acetonitrile solution are explored. The propagation kinetic constant has no evident change at initial stage and begins to decrease after some conversion. While...
Numerical investigation on heat transfer in an annulus between independently rotating cylinders with turbulent axial flow
Fu Debin, Ding Shuiting, Xu Guoqiang, Tao Zhi
2003, 29(8): 691-695.
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Abstract:
Heat transfer in the air gap of two rotating cylinders was numerically studied, based on the mixing length turbulent model. Temperature field of annulus, temperature distributions and heat transfer coefficient distributions on inner cylinder surface were calculated and compared with experimental res...
Application of an improved importance sampling method in mechanisms reliability
Zhao Guangyan, Zhang Jianguo
2003, 29(8): 696-699.
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Abstract:
The Monte Carlo importance sampling method together with response surface, which was used to calculate the mechanisms reliability, was studied. Based on the method, a reliability analysis software for aircraft structural systems was developed, and a case of a elevator control mechanisms was presente...
Studies on infrared camera using in heat transfer experiments
Wen Jie, Zhao Guilin, Tao Zhi, Peng Hui
2003, 29(8): 700-703.
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Abstract:
The possibility of using infrared camera in heat transfer experiments was discussed and the various influential factors was analysed, such as the radiation ratio of materials,roughness of surface and the transmissivity of special materials for infrared ray transmission. The studies indicate that the...
Model of temperature-controlled air supply duct of a kind of fighter ECS based on MATLAB
Yao Hongwei, Wang Jun
2003, 29(8): 704-707.
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Abstract:
The configuration and working principle of temperature-controlled air supply duct of a kind of fighter ECS (environmental control system) are detailedly introduced. Based on the mathematical model of components, the dynamic simulating model of entire ECS is established by using simulink, one of tool...
Simulation technology study of the high/low temperature environmental simulation system based on MATLAB
Dong Sujun, Feng Zhenggang, Wang Jun
2003, 29(8): 708-712.
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Abstract:
A simulation scheme based on the platform of MATLAB software for the high/low temperature environmental simulation system (H/L TESS) is introduced and illustrated by an example of simulation project. Fist the MATLAB simulation models library of the system is built for systematic simulation purpose w...
Displacement ventilation system using solar energy desiccant cooling technology
Zhang Pong, Wang Jun
2003, 29(8): 713-716.
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Abstract:
Based on the development trend of the current air conditioning, a new mode of ventilation-displacement ventilation is introduced, not only the principle of this ventilation system but also the thermal comfort conditions of the ventilation system combined with cooled ceiling.According to the current ...
CSCW application in air traffic management
Zhao Yifei, Wu Zhe
2003, 29(8): 717-721.
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Abstract:
In order to increase the cooperation efficiency and decrease errors of flight release in air traffic management, theories and technology of CSCW(computer supported cooperative work) have been introduced and an applicable CSCW system for flight release cooperation has been designed. Practice has show...
Application of DSP in secondary surveillance radar signal simulator
Zhang Yongjie, Li Shaohong
2003, 29(8): 722-724.
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Abstract:
The design idea and fundamental structure of a SSR(secondary surveillance radar) signal simulator are presented. The structure and characteristic of TMS320F206, a kind of 16-bit fixed-point DSP(digital signal processor), are introduced and the function of the DSP in the data-exchanging, control of t...
Study on curl-based streamribbon visualization
Hu Xing, Yang Guang, Dong Haitao
2003, 29(8): 725-729.
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Abstract:
Streamribbon visualization,one of the important techniques for CFD(computational fluid dynamics) vector fields visualization,was investigated. On the basis of the analysis on existing algorithms regarding streamribbon generation, the stress was laid on the streamribbon generation algorithm based on ...
Sensors parameters modification integrated vehicle navigation and location system
Gao Peng, Fu Li, Fan Yuezu
2003, 29(8): 730-733.
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Abstract:
Composing of GPS(global positioning system)/DRS(dead reckoning system)/MM(map matching)integrated vehicle navigation and location system and vehicle positioning algorithm were expatiated. Kalman filter and non-Kalman filter algorithm for sensors parameters modification was represented, and the probl...
Robust adaptive interference rejection in DS/FH hybrid system
Liu Jicheng, Shao Dingrong, Li Shujian
2003, 29(8): 734-736.
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Abstract:
According to robust estimator theory, an adaptive filter based on generalized M estimation was used to reject partial band interference in DS/FH hybrid communication system, and the robust adaptive algorithm was deduced. The performance of two M estimation functions (Huber function and Tri-weight fu...
Application research on thermal analysis software of electronic systems
Fang Zhiqiang, Fu Guicui, Gao Zexi
2003, 29(8): 737-740.
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Abstract:
The temperature field of a product can be picked up to optimize the design and improve the reliability by the technology of thermal analysis in the phase of design. Based on the characters of thermal analysis software, some problems in their application are discussed. With a simple example, the whol...
Kind of fast Hough transform used in line detection
Qiu Liwei, Song Zishan, Shen Weiqun
2003, 29(8): 741-744.
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Abstract:
Hough transform is a widely used algorithm in computer vision and pattern recognition. However, the tremendous computation required by Hough transform impedes it used in real-time applications. The standard Hough transform used only the information of a single non-zero pixel, which causes the huge c...
Integrated reliability evaluation of development test data based on AMSAA model
Du Zhenhua, Zhao Yu, Huang Min
2003, 29(8): 745-748.
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Abstract:
Based upon the AMSAA model which has been widely used in engineering,a method of defining the time environmental conversion factor was proposed through optimization process, which made full use of the failure data from the same kind of products or the similar products in their development tests, and...
Application of L-D factorization in calculating inverse in federated filter
Xiang Zheng, Fu Li, Fan Yuezu
2003, 29(8): 749-752.
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Abstract:
How to correctly calculate the inverse is one of the most important processes in federated filter. The precision of its result and time it will consume would decide whether the whole filter can work properly. The result of digital simulation illustrate that applying L-D factorization which is famous...

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