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2012 Vol. 38, No. 10

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Calculation of wing-body junction flow using Gao-Yong turbulence equations
Gao Ge, Jiang Lijun, Gao Lin
2012, 38(10): 1271-1274.
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The derivation of Gao-Yong turbulence equations was based on a partial statistical average scheme proposed in the past by the first author in an attempt to capture the drift flow, a first-order statistical moment of turbulent fluctuations. Continuity and momentum equations of turbulent fluctuations ...
Linear regression analysis for normal distribution-valued data based on complete information
Wang Huiwen, Li Nan
2012, 38(10): 1275-1279.
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In light of normal distribution-valued symbolic data, a new method for building linear regression model was proposed. To reflect all the original information of the normal distribution-valued data, definition and calculation principle were proposed for first moments, second original moment and secon...
Experiments of contact stiffness and fretting wear on coating material of blade shroud
Hong Jie, Yang Xin, Chen Lulu, Zhang Dayi
2012, 38(10): 1280-1284.
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The experimental facilities, which could be used to measure the hysteresis curve caused by fretting during contact surface, were adopted in order to test the contact stiffness and fretting wear of the test pieces with the coating material under different contact styles. The contact stiffness test re...
Evaluating SEU effects in SRAM-based FPGA with bit-by-bit upset fault injection
Song Ningfang, Qin Jiaomei, Pan Xiong, Jiang Yuntian
2012, 38(10): 1285-1289.
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Static random access memory (SRAM)-based field programmable gate arrays (FPGAs) are extremely sensitive to single event upsets (SEUs) induced by radiation particles. In order to evaluate the dependability of the obtained designs, a bit-by-bit upset fault injection methodology based on run-time recon...
Localized adaptive control for a class of MIMO nonlinear systems
Zheng Hong, Liu Dong, Guo Jun, Dong Xinmin
2012, 38(10): 1290-1294.
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Localized robust adaptive control was proposed for a class of uncertain multiple-input-multiple-output nonlinear systems. The proposed method used command filtering backstepping method to design virtual control law. Localized approximators were used to approximate unknown functions online. Spectral ...
Method of MSPC fault detection and diagnosis based on variable contributions
Du Fuzhou, Tang Xiaoqing
2012, 38(10): 1295-1299.
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Fault detection and diagnosis is one of the key technologies on the effective application of multivariate statistical process control(MSPC). In order to overcome the historical fault information using shortage, considering the influence of principal components variable contributions and the reconstr...
Fault prediction for aircraft control surface damage based on SMO-SVR
Dong Lei, Ren Zhang, Li Qingdong
2012, 38(10): 1300-1305.
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In order to predict changes more accurately when the surface of aircraft damaged, an algorithm based on improved sequential minimal optimization support vector regression (SMO-SVR) was presented. This algorithm reconstructed the phase space of multivariate and nonlinear time series using improved C-...
Elastic effects on flight mechanics of waverider
Xiang Jinwu, Zeng Kaichun, Nie Lu
2012, 38(10): 1306-1310.
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The impact of structural elasticity on the static properties and dynamic stability of a typical air-breathing hypersonic vehicle was investigated. An integrated aeropropulsive/aeroelastic model was developed for the longitudinal dynamics of hypersonic vehicles, with local piston theory for unsteady ...
Pulsed electron beam welding grid power supply design
Qi Bojin, Xu Guoning, Liu Fangjun, Xiao Pan
2012, 38(10): 1311-1316.
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A new pulsed electron beam welding grid power supply was developed, which includes gridbias base circuit and gridbias pulse circuit. The power supply can produce both direct current gridbias and pulse gridbias, in another word, it can realize not only direct current electron beam welding but also pu...
Feature extraction method based on multifractal parameters for hyperspectral imagery
Zhao Huijie, Cai Hui, Li Na
2012, 38(10): 1317-1320.
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Multi-fractal parameter extraction method based on spectral probability measurement was proposed to resolve the problem that the local absorption characteristics of hyperspectral data can not be described by the single fractal dimension. The method of spectral information measurement was used to cal...
Balanced external gust loads computation and analysis for elastic aircraft
Yan De, Yang Chao, Xiao Zhipeng
2012, 38(10): 1321-1325.
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Continuous turbulence is one of gust models for gust loads analysis needed in various aviation regulations. But there exit some difficulties when the loads induced by continuous turbulence applied to aircraft structural design. Based on stationary random process assumption, utilizing power spectral ...
FED:high performance industrial fieldbus based on Ethernet devices
Hu Xing, Huan Ji, Liu Zhe
2012, 38(10): 1326-1330.
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A kind of high-speed real-time fieldbus used in automation equipment named fieldbus based on Ethernet devices(FED) was studied. FED is based on Ethernet components and FPGA chip. System on chip(SOC) technology was used to develop a kind of practical FED device. Without complex driver, media access c...
Six-position rotation rate calibration and piecewise linear interpolation compensation for INS in full temperatures
Li Jianli, Fang Jiancheng, Ma Yanhai, Cheng Junchao
2012, 38(10): 1331-1335.
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For decreasing measurement error of inertial navigation system(INS), a novel scheme was proposed in which a six-position rotation calibration and piecewise linear interpolation compensation in full temperatures. A six-position rotation rate calibration experiment was implemented in a series of const...
Pressure sensing valve plate mechanism for ripple reduction of variable pressure piston pump
Huang Bochao, Wang Shaoping
2012, 38(10): 1336-1340.
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The silencing structure of the valve plate is the most effective approach to reduce the pressure ripple in the hydraulic system via reducing the source flow ripple. To endue the piston pump with self-adaptability at the operating pressures over a wide range, a novel pressure sensing silencing struct...
Orthogonal test on environmental effects of fatigue life of CFRP composite laminates
Sun Chongqiang, Zhang Jianyu, Fei Binjun
2012, 38(10): 1341-1345.
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In order to research the environmental effects on fatigue performance of CFRP composite laminates, an orthogonal test was carried out for T300/QY8911 composite laminates. Standard specimens were prepared and then the tension fatigue life was tested in the given condition. To obtain the significance ...
Ascent trajectory optimization for stratospheric airships with thermal effects
Guo Xiao, Zhu Ming, Wu Zhe
2012, 38(10): 1346-1351.
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In respect for ascent trajectory optimization of stratospheric airship, a research was conducted with the thermal effects. Basic thermal characteristics of the stratospheric airship and the energy equations about the ship film and the internal gas were introduced. Besides, the equations of motion fo...
Locating variable message signs under ATIS environment
Lu Xiaoshan, Huang Haijun, Shang Huayan
2012, 38(10): 1352-1357.
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The variable message signs (VMS) location problem under the advanced traveler information system (ATIS) environment was studied using the link transmission model. A method for estimating link travel times was proposed for serving the information release of ATIS. Simulation results show that there ex...
Impact analysis on frequency hopping to carrier tracking precision in DS/FH hybrid spread spectrum receiver
Zhan Wei, Zhang Xiaolin, Chang Xiaoming, Meng Bochao
2012, 38(10): 1358-1362.
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Facing the increasingly complex electromagnetic environment, it is an attempt to introduce DS/FH hybrid spread spectrum technology to the field of TT&C. According to the characteristics of DS/FH signal, mathematical model of several key nodes in DS/FH hybrid spread spectrum receiver was derived ...
Modeling and collaborative optimization of remote sensing satellite system parameters design
Wu Wenrui, Huang Hai, Wu Beibei
2012, 38(10): 1363-1368.
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Focusing on system design problem of remote sensing satellite, optimization problem with comprehensive objective combined by coverage width, ground sample distance and total mass was set up. Considering subsystems of guidance, navigation and control (GNC), power, structure and thermal control (TCS) ...
Modeling of electromagnetic environment and radiation distribution analysis for aircraft approaching and landing
Wang Lei, Su Donglin, Xie Shuguo, Zhao Zihua
2012, 38(10): 1369-1374.
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Electromagnetic field, terrain and obstacle are three vital elements which constitute electromagnetic environment in aerodrome terminal. Because of their inhomogeneity in topology, physics and semanteme, it is difficult to express the characteristic of the electromagnetic environment for aircraft ap...
Cell-center ADT algorithm based on ghost cell
Yuan Wu, Yan Chao, Yu Jian, Du Ruofan
2012, 38(10): 1375-1379.
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For the point search problem in Chimera gird generation, an alternating digital tree(ADT) method based on ghost cells was presented, which operated directly on the cell-centered grid system. The problem caused by the covering area incompleteness of cell-centered grids when constituting ADT data stru...
Interdiffusion behavior in Nb/α-Ti3Al ternary system
Wang Wenbo, Zhou Chungen
2012, 38(10): 1380-1383.
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The α2 single phase interdiffusion behavior in Ti3Al-Nb ternary system was studied at the temperature of 1 273 K, 1 423 K, 1 573 K, using Ti3Al/Nb single phase diffusion couples. The uniform β-(Ti, Nb) phase was formed in mid of the diffusion couple after 120 hours diffusion annealing in the high te...
Modification of SA model for predicting airfoil flow separation
Zhou Dagao, Liu Yangwei, Wen Xiaoqing, Lu Lipeng
2012, 38(10): 1384-1388.
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Two-dimensional numerical simulation of airfoil S825 with Spalart-Allmaras(SA) turbulent model was presented. The simulation results were compared with the experiment results. As SA turbulent model could not simulate the flow separation accurately at the rear region of the airfoil, the strongly non-...
Decision-making of failure modes mitigation program considering coupling relationship among failure modes
Yang Dezhen, Ren Yi, Wang Zili, Liu Linlin
2012, 38(10): 1389-1394.
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During the development stage of complex products, failure modes mitigation program often decided by experience, without considering the failure modes’ coupling relationship. Aiming at solving this problem, a decision process of failure modes mitigation program was proposed. Firstly, a new concept of...
Design and efficiency analysis for loading actuator used in aircraft structure test
Luo Caijin, Shang Yaoxing, Jiao Zongxia
2012, 38(10): 1395-1399.
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Based on the characteristics of low speed and low system flow in plane structure test especially in the static loading test, a new type of valve-control electro-hydraulic actuator for aircraft structure loading test was designed. The system components and working principle was described, and the eff...
Intelligent verticality-adjustment method of end-effector in aeronautical drilling robot
Gong Maozhen, Yuan Peijiang, Wang Tianmiao, Zhang Rui
2012, 38(10): 1400-1404.
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Based on the requirement of robotic drilling for aircraft fuselage, a novel verticality adjustment method of drill bit in aeronautical drilling robot system was proposed, which is composed of surface-normal measurement and adjustment of drill bit-s attitude. Three laser range sensors were used in su...
Accelerated degradation mechanism modeling method for accelerometers
Wang Qiancheng, Chen Yunxia, Kang Rui
2012, 38(10): 1405-1409.
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To deal with the difficulties of lacking mechanism model for traditional accelerated degradation test design, a modeling method was proposed based on main mechanism test, key part simulation, parameters analysis and system identification. The main mechanism was identified and its test was carried ou...
Infrared radiation characteristic ground test of ballistic flying projectile
Ke Weina, Zhu Dingqiang, Cai Guobiao, Wang Weidong
2012, 38(10): 1410-1414.
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An experimental system based on the laboratory equipments was designed and set up to simulate the mid-course flying condition of projectile, and measured the infrared radiation characteristic data of flying projectile. Based on the conductive and radiant theory, the influences of simulation paramete...
Improvement on ABDOM with normalized and discrete parameters
He Zhitao, Yan Haihua, Liu Chao
2012, 38(10): 1415-1419.
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In order to describe, predict and evaluate the true software defects discovery process more accurately with accumulative bi-damped oscillation model(ABDOM), on the basis of proposing ideal sequential process of software defects discovery(ISPSDD), software defects discovery damp a and software defect...
Traffic impact analysis of highway accident based on the shockwave theory
Yu Guizhen, Liu Yumin, Jin Maojing, Wang Yunpeng
2012, 38(10): 1420-1424.
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The study on traffic impact of highway accident plays an important role in highway incident management. In the study, the shockwave theory as a foundation, the accumulation and dissipation process of the accident upstream location on two-lane highway was analyzed. According to the numbers of impacte...

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