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2013 Vol. 39, No. 5

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Adaptive BTT terminal guidance law for hypervelocity vehicle
Li Huifeng, Ge Yajie, Li Zhaoying
2013, 39(5): 569-573.
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An adaptive proportional navigation guidance law is proposed for hypersonic vehicle terminal guidance. The vehicle could be guided to impact the target precisely in a specific direction with required circular error probable. Based on the analysis of longitudinal flight, a convergence strategy was de...
Resonant gravity-assist trajectory design for Sun’s middle latitude exploration
Li Xiaoyu, Zheng Jianhua
2013, 39(5): 574-579.
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Sun's middle latitude exploration targets on the observation of the solar middle-latitude region from inclined orbits. In order to achieve this, resonant gravity-assists trajectory(RGA) was investigated considering the constraints of nearest distance to the Sun. After the deduction of analytical exp...
Mathematical simulation method to calculate air minimum control speed
Jia Zhongren, Huang Chengtao, Wang Lixin
2013, 39(5): 580-584.
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The determination of the air minimum control speed VMC is an important content in the civil aircraft airworthiness compliance verification. The value of VMC is one of the vital bases to design the rudder and engine layout of an aircraft. Based on the physical understanding of the VMC airworthiness c...
Slipstream characters comparison of improved actuator disk model and 3D propeller numerical simulation
Duan Zhongzhe, Liu Peiqing, Qu Qiulin, Liu Zhenchen
2013, 39(5): 585-589.
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Four different propeller simulation models were compared to study the influence of propeller slipstream by solving Reynolds averaged Navier-Stokes(RANS) equations, including two prediction methods of the standard strip theory with and without rotate velocity correction applied in the actuator disk m...
Simulation of re-entry capsule thermodynamics environment by DES method
Liu Jia, Yan Chao, Zhao Rui, Jiang Haijun
2013, 39(5): 590-594.
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Detached eddy simulation (DES) is an effective numerical simulation method for unsteady separated flow since it combines the advantages of both Reynolds averaged Navier-Stokes(RANS) and large eddy simulation (LES) methods. Spalart-Allmaras(SA) based DES method is used for the re-entry case under hyp...
Computer analysis of large-scale aircraft landing gear retraction and extension control system
Tu Yi, Xiao Xiang, Li Nan
2013, 39(5): 595-599.
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A variety of constraints and influence factors need to be considered in landing gear retraction and extension (R/E) control system design. System simulation platform is an important auxiliary method for the system design. The hydraulic accessories simulation models of large-scale aircraft landing ge...
Optimization of target designation for air-ship missile under condition of bearing-only attack
Sun Tao, Xie Xiaofang, Tang Jiang, Xue Wenguo
2013, 39(5): 600-604.
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Bearing-only attack is one of the most effective approach for air-ship missiles to adapt complex electromagnetic combat environment. Because of the absence of target distance information, the target designation and the fire control parameters are hard to be solved. Based on the analysis of quantizat...
Numerical simulation of parafoil aerodynamics and structural deformation based on loose coupled method
Zhang Chun, Cao Yihua
2013, 39(5): 605-609.
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The aerodynamic characteristic and structural deformation of two kinds of parafoils, one without cells and one with cells, were numerically simulated by utilizing loose coupled method to study the cell's effect on parafoil aerodynamic performance and structural deformation. In terms of fluid analysi...
Multi-routes dynamic planning on deck of carrier plane based on clustering PSO
Han Wei, Si Weichao, Ding Dachun, Song Yan
2013, 39(5): 610-614.
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To solve problem of multi-routes dynamic planning on deck about carrier plane, a method based on clustering particle swarm optimization (PSO) was proposed. The mathematic model of the problem was established. On the basis of establishing the whole environment modeling of aircraft carrier deck, the c...
Assembly sequence planning for aircraft based on non-orthogonalinterference matrix
Sun Zhanlei, Zhao Gang, Han Pengfei, Guo Chunying
2013, 39(5): 615-620.
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Aircraft components assemblies contain many curved features in surface, complex relationships and multiple connects between parts, which make it difficult to design assembly process. A novel assembly sequence planning methodology based on non-orthogonal interference matrix was proposed. By analyzing...
New approach for generating flight load spectrum of civil aircraft
Liu Xiaoming, Wan Shaojie, Xiong Junjiang, Li Qiang
2013, 39(5): 621-625.
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A novel approach was outlined to generate flight load spectrum for a new civil airplane from the statistical data of actural flight load on similar type of ones. The flight spectrum and continuous stress sequences of new civil airplane were derived from the statistical data of actural flight load of...
Full assembly fluid/structured flutter analysis of a transonic fan
Zheng Yun, Yang Hui
2013, 39(5): 626-630.
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Numeric method for blade flutter with coupled fluid'structured approach and aeroelastic model of full assembly fan blade vibration were developed. The coupling was achieved by solving governing equations for fluids and the blade vibration simultaneously and exchanging boundary condition at each time...
Numerical simulation of separated turbulent flow using GAO-YONG turbulent model
Gao Lin, Gao Ge, Jiang Lijun
2013, 39(5): 631-634,639.
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Numerical simulation of separated flow around a triangular cylinder and turbulent flow over a rearward-facing step in a diverging channel flow using GAO-YONG turbulence model were presented. All calculations were based on open field operation and manipulation(OpenFOAM), which is a open-source comput...
Adaptive subspace band selection method based on spectrum characteristics
Xu Qiu, Li Na, Zhao Huijie, Li Xudong
2013, 39(5): 635-639.
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Adaptive subspace band selection method based on spectrum characteristics was proposed to solve the problems, including the existing methods which couldn't divide subspace by studied features and background features easily affected the result of subspace division.Spectral adaptive factor (SAF) was e...
Dynamic modeling for a climbing robot
Yue Ronggang, Wang Shaoping
2013, 39(5): 640-644.
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City-Climber robot is a novel wall-climbing robot which has the capability to move on floors, climb walls, walk on ceilings, and transit between them. In order to research 3D path planning problem, kinematic modeling and dynamic modeling for the City-Climber robot in a cuboid room were built. The dy...
Attitude estimation based on quaternion square-root cubature Kalman filter
Qian Huaming, Huang Wei, Ge Lei, Zhang Guangtuo
2013, 39(5): 645-649.
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Considering that a multiplicative extended Kalman filter (MEKF) existed lower estimation accuracy and slower convergence rate for large initialization errors, a quaternion square-root cubature Kalman filter (QSCKF) was proposed. A quaternion nonlinear error model was derived for attitude determinati...
Time and cost performance evaluation algorithm of workflow model
Pan Jun, Liu Li
2013, 39(5): 650-654.
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The time and cost performance parameters of acyclic workflow model were analyzed, the introduction of the extraction algorithm of the circular structure made it possible to evaluate the time and cost performance of ring workflow model. Using improved Tarjan algorithm and 7-tuple, each cycle structur...
Approximation by normal distribution with covering width based EM estimation
Han Liyan, Cai Mingsheng, Yin Libo
2013, 39(5): 655-659.
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Based on the comparison and analysis on existingnon-normal distributions, the approximation method by using mixture normal distributions was proposed. For overcoming the order determination difficultyin maximum likelihood estimation based expectation maximization (EM) algorithm, the maximalcovering ...
Error analysis of surface current density on perfect electric conductor based on physical optics
Ji Jinzu, Ma Yunpeng, Huang Peilin, Zhang Zhongjian
2013, 39(5): 660-664.
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In radar cross section (RCS) calculation of perfect electric conductor (PEC) targets using physical optics (PO), the surface current was calculated based on the assumption of infinite tangent plane. The assumption was fulfilled only for the electric-big and smooth-surface targets, while there is err...
Ray path tracing on discrete surface
Chen Zhixian, Su Donglin, Liu Yan, Fang Xiang
2013, 39(5): 665-669.
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In order to analyze antenna isolation on discrete surface, a new algorithm for ray tracing that called "minimum included angle algorithm" was proposed. First, the discrete surface was divided into triangular mesh to generate surface grid data that accord with the format required in the article. The ...
Brittle behavior of gold alloy joint soldered with tin-lead solder
Yin Na, Qu Wenqing, Yang Shujuan, Li Rui
2013, 39(5): 670-673.
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Soldering of Au60AgCu using tin-lead solder was performed in the experiment. The soldering joint of microstructure, micro-hardness, phase composition, mechanical properties and fracture morphology were analyzed, and the effect of interface intermetallic compound on joint brittleness was discussed. I...
Fatigue property of Al-Li alloy friction stir welded lap joints
Zhang D, an, Qu Wenqing, Yang Mocong
2013, 39(5): 674-678.
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Through the fatigue test, fracture characteristic and microstructure analyses, the fatigue property of the Al-Li alloy friction stir welded lap joints and the effect of "hooking defect" appearing at the thermal-mechanically affected zone(TMAZ) of advancing side on the joint fatigue property were stu...
Solution algorithm of the three-body lambert problem with gravity assist maneuver
Luo Qinqin, Han Chao
2013, 39(5): 679-682,687.
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A new numerical solution algorithm for the three-body Lambert problem with gravity assist maneuver was developed. The algorithm was divided into two parts, the initial solution design and the searching for the final solution. The pseudostate theory was adopted to get the initial solution of the thre...
Total dose dependence of off currents in the irradiated PD-SOI devices
En Yunfei, Liu Yuan, He Yujuan
2013, 39(5): 683-687.
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Total dose dependence of off currents in the partially depleted SOI devices with standard and enclosed gate structures was presented. The experimental results show that increases in the radiation induced off current are result from the effect of trench sidewall leakage, the conduction of back gate p...
Ultrasonic phased array inspection for the corner of composite components
Zhang Dongmei, Yu Guang, Zhou Zhenggan, Xu Na
2013, 39(5): 688-692.
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Ultrasonic phased array inspection for the corner of composite components was researched on experiment. The difficulties of the corner inspection and advantages of ultrasonic phased array inspection technique were dealt with. Then two kinds of inspection methods with curved array transducer and line...
Post-processing of volumetric PIV data based on continuity condition
Gao Qi, Wang Chengyue, Wang Hongping, Wang Jinjun
2013, 39(5): 693-696.
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A new technique of data post-processing was proposed to improve volumetric velocity field of particle image velocimetry (PIV).To make the processed velocity field satisfy the differential form of the continuity equation of incompressible flow, the modification was made on the original experimental d...
Prediction of electromagnetic interference based on neural network
Yang Tianpeng, Ma Qishuang, Xie Qingming
2013, 39(5): 697-700,705.
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A method to predict the electromagnetic interference using neural network was proposed. Genetic algorithm has the strong overall search ability but easy to fall into local optimum, and simulated annealing algorithm has the partial search ability, avoiding the search into local optimal solution. By u...
Storage reliability analysis of missile based on multi-mechanism competition degradation method
Luo Xiangyong, Huang Xiaokai
2013, 39(5): 701-705.
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Remote switch, radio altimeter, radar angle automatic device, gyroscope and power equipment are the main influence equipments for long-term storage reliability of missile. Firstly, the storage profile of missile was defined, and feature voltage value of influence equipments were obtained from regula...
Parallel acquisition algorithm in time-frequency domain
Zhan Wei, Zhang Xiaolin, Li Juan
2013, 39(5): 706-710.
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Due to the fact that the classic method of parallel acquisition in the time or frequency domain cannot satisfy the demand of the fast acquisition of the direct sequence/frequency hopping(DS/FH) hybrid spread spectrum signal in TT&C. In order to further improve the acquisition accuracy of the car...

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