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2009 Vol. 35, No. 12

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Development of kind of heat transfer coefficient sensor based on steady method
Quan Yongkai, Xu Guoqiang, Luo Xiang, Ding Shuiting
2009, 35(12): 1413-1416.
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Abstract:
A kind of heat transfer coefficient sensor based on steady state method was developed. A calibration terminal was pulled. The precision was analyzed and the results were compared with the values calculated from the classics empirical equation. The heat transfer coefficient obtained from the calibrat...
Direct numerical simulation of turbulent channel flow of polymer solution
Zhang Jinbai, Zheng Zhaohu
2009, 35(12): 1417-1420.
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Abstract:
The drag reduction characteristic of polymer turbulence in channel flows was investigated using the direct numerical simulation (DNS). In the simulations, the spectral methods employing Fourier series and Chebyshev polynomial were used to make the spatial discretization and the time-splitting method...
Laser frequency discriminator using all fiber unbalanced-arm Mach-Zehnder interferometer technique
Jia Yudong, Ou Pan, Zhang Chunxi, Wang Jiqiang
2009, 35(12): 1421-1424.
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Abstract:
An improved laser frequency discriminator using all fiber unbalanced-arm Mach-Zehnder interferometer technique was studied in detail. The acquisition technique of frequency error signal through utilizing triangular wave to modulate the an arm of interferometer was analyzed quantitatively. The piezo-...
Multilayer trajectory optimization design for surface-to-air missile based on global sensitivity equation method
Jiang Huan, Zhou Hao, Chen Wanchun, Yang Baokui
2009, 35(12): 1425-1428.
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Abstract:
A multilayer approach to the midcourse trajectory design and terminal phase time constants design for a surface-to-air missile to maximize the kill probability was presented. Three layers were discussed. The first layer represented the midcourse trajectory of the missile, the second layer represente...
Flutter control of composite panels with embedded piezoelectric materials
Yuan Kaihua, Qiu Zhiping
2009, 35(12): 1429-1433.
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Abstract:

The panel flutter phenomenon with thermal effect was researched. By virtue of von Karman-s large deflection plate theory, piston theory aerodynamics and the quasi-steady thermal stress theory, the aeroelastic model of composite panel with embedded piezoelectric materials was established. In nonlinea...
Weight allocation of combination prediction based on sequence relative nearness degree
Lü Yongle, Lang Rongling, Tan Zhanzhong
2009, 35(12): 1434-1437.
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Abstract:
Aiming at the weight allocation problems of combination prediction for a time series, a new method was proposed to evaluate the applicability of the employed models and allocate weights, based on the "nearness" between the test sequence and the corresponding prediction value sequence, which overcame...
Two-phase software clustering method based on complex network theory
Qian Guanqun, Zhang Lin, Zhang Li
2009, 35(12): 1438-1442.
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GN(Girvan-Newman) algorithm, a famous community detection algorithm, is introduced into software clustering. In order to overtake the weakness of high computation complexity and avoid generating small scale modules, a two-phase software clustering method is proposed. Firstly, cluster software based ...
Multinomial Logit model based on Gumbel Copula
Li Huamin, Huang Haijun, Wang Huiwen
2009, 35(12): 1443-1445.
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For the IID(identically & independently distributed) condition of the multinomial Logit model, which requires all random terms existing in the utilities of alternatives to be independent each other, a discrete choice model was proposed, based on the Copula function which can be used to derive th...
Analysis of heat transfer and flow characteristics of composite wicks of loop heat pipes
Bai Lizhan, Lin Guiping
2009, 35(12): 1446-1450.
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Abstract:
Loop heat pipe is one of the most advanced thermal control devices in the spacecraft thermal control system, whereas high quality wicks are the key components for its efficient and reliable operation. To improve the overall performance of the wicks, composite wicks are the developing trend. The math...
Impulsive loading of simply supported lattice truss core sandwich beams with axial restraints
Liu Hua, Zhu Xiaoqin, Yang Jialing
2009, 35(12): 1451-1454.
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Abstract:
The dynamic response of a simply supported lattice truss core sandwich beam with axial restraints subjected to uniform transverse impulsive loadings was studied through rigid-plastic analytical model and elastic-plastic finite element (FE) calculation. Firstly, the maximum deflections of the sandwic...
CCD vidicon image processing simulation
Liu Yudan, Zhang Jiong, Dai Shuling
2009, 35(12): 1455-1458.
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Abstract:
A simulation method based on programmable graphic processing unit (GPU) was proposed to simulate charge coupled device (CCD) vidicon image processing. The flow-operating mode and parallel computation ability of GPU were utilized to process each pixel, including Gamma correction, brightness and contr...
Evaluation model of materiel support plan in development phase based on DEA
Qu Lili, Kang Rui
2009, 35(12): 1459-1463.
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Abstract:
To solve the problem that support plan evaluation existed many defects in angles and methods in the previous studies, the evaluation model based on data envelopment analysis (DEA) was presented. The support system general characteristics were abstracted, and evaluation parameters of support system c...
Time effectiveness analysis of fault samples for aero-engine reliability assessment
Hong Jie, Wang Dawei, Ma Yanhong
2009, 35(12): 1464-1467.
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Abstract:
It is hysteretic to use reliability model which is set up based on failure data to reflect the changes of system reliability condition. With the enhancement of reliability level, the early failure samples should be processed time effectively in aero-engine reliability assessment. An attenuation fact...
Selection of reliability parameters and targets assessment for certain missile turbofan engine
Wang Dawei, Zhang Liming, Hong Jie
2009, 35(12): 1468-1472.
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Abstract:
Based on the characteristics of structures and employments on missile turbofan engine, mean time between failure(MTBF), rate of startup successfully(RST)and mean time to failure(MTTF)were chosen as the parameters of reliability evaluation. MTBF reflect the basic reliability, and MTBF evaluation mode...
Infrared radiant computation by OpenGL
Fang Ning, Zhang Xiaolin, Gao Jia, Qi Zhengyun
2009, 35(12): 1473-1476.
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Abstract:
A method of computing the infrared radiant intensity of complex target using OpenGL which achieved the visual infrared radiation calculation was presented. For OpenGL is able to be applied to construct the three-dimensional modal of objects and do three dimensional interaction, the evaluation of com...
Analysis and accurate compensation of dead-time for three-phase DC/AC inverter
Zhang Jin, Qi Bojin, Zhang Shaoru, Qin Wenping
2009, 35(12): 1477-1482.
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Abstract:
A novel approach to compensate the dead-time effect based on the existing no-dead-time technique was presented. The reason of the inverter output voltage distortion was analyzed with the consideration of the dead-time and the non-ideal characteristics of the switching devices. The proposed method wa...
Planar linkage mechanism design for bi-objective of trajectory and velocity
Guo Weidong, Wang Xin
2009, 35(12): 1483-1486.
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Abstract:
An optimal synthesis method of planar linkage mechanism for continuous path generation was put forward, which would find the interpolation nodes of planar linkage mechanism-s trajectory generation mechanism, for bi-objective of trajectory and velocity. The interpolation nodes were entrusted with the...
Multi-target tracking based on cluster min-distance data association
Ding Wenrui, Li Hongguang, Li Xinjun
2009, 35(12): 1487-1490.
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Abstract:

A multi-target tracking algorithm based on cluster min-distance data association was proposed. Three matching distances about target position, target size and target gray value were established, weighted and integrated into final target matching distance function. The algorithm searched for the targ...
Jet mixing enhancement by pulsed blowing
Li Jiajun, Eriqitai, Wang Qiang
2009, 35(12): 1491-1494.
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Abstract:
This work uses a technique for injecting high amplitude and low mass flux pulsed slot jets into subsonic shear layers for the purpose of jet mixing enhancement. The 3-D flow fields of the jets with pulsed jet blowing for mixing enhancement were simulated numerically. The finite volume method, RNG k-...
Rapid partitioning of an aircraft 3D model into its assembly cells
Wang Zijun, Zheng Guolei, Du Baorui
2009, 35(12): 1495-1498.
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Abstract:
By the investigation of practical production the methods of aircraft assembly cell partition in the field of home aviation were wildly collected and deeply known about. Refer to the literature and information about the technique of aircraft assembly, the traditional experiences and knowledge of airc...
Modifiable Squeezer cluster algorithm used in large-scale matrix
Li Yan, Wang Huiwen, Ye Ming, Liu Dan
2009, 35(12): 1499-1502.
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To solve the clustering method to the large-scale matrixes in the same dimension, the modifiable Squeezer cluster algorithm was proposed, based on the analysis of Squeezer cluster algorithm and the definition of the distance between the matrixes. The modifiable algorithm set a distance threshold, pu...
Engineering estimation methods of thermal load of airplane
Zhang Xingjuan, Yang Chunxin, Yuan Xiugan
2009, 35(12): 1503-1506.
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Abstract:
The thermal load of the airplane refers to the net heat transmitted in (or out) per unit time when keeping the constant temperature and humidity in the cabin of the airplane, which is the reference to estimate the ability of the temperature conditioning system. On the basis of consulting 25 kinds of...
Monte Carlo simulation of polychoric correlation and Pearson correlation coefficient
Wu Ruilin, Wang Jianzhong, Yuan Kehai
2009, 35(12): 1507-1510.
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Abstract:
The more accurate estimates were obtained via the polychoric correlation coefficient rather than traditional Pearson correlation coefficient in multivariate analysis for ordinal categorical data. The statistic model and estimators of the polychoric correlation were introduced. Then a Monte Carlo sim...
Aileron control and reconfiguration of flying wing aircraft
Chai Xue, Wang Ganglin, Wu Zhe
2009, 35(12): 1511-1515.
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Abstract:
To decouple the longitudinal and lateral-directional coupled motion caused by the aileron deflection of the flying wing aircraft, the elevator and the split-drag-rudder (SDR) were used to cooperate with the aileron to decouple the coupled motion. In order to increase the flying wing aircraft surviva...
New algorithm integration model applicable for computer aided engineering
He Yunqin, Liang Guozhu
2009, 35(12): 1516-1520.
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In order to solve the important problem of algorithm integration in computer aided engineering(CAE) domain, which exists in many current engineering software systems taking algorithms as the core, using rocket motor design as a representative case and starting point, the characteristics of algorithm...

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