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2013 Vol. 39, No. 8

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Solution of minimum bounding box of scattered points based on genetic algorithm
Sun Dianzhu, Shi Yang, Liu Huadong, Li Yanrui
2013, 39(8): 995-998.
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Abstract:
An algorithm of minimum bounding box combining genetic algorithm with O'Rourke's algorithm was proposed, which regarded the volume function in O'Rourke's algorithm as the objective function and used the evolutionary factors to guide the searching directions. Through the process of the population's i...
Dynamic analysis methods of variable-mass Euler beam under longitudinal overload
Xing Yufeng, Xie Ke, Pan Zhongwen
2013, 39(8): 999-1003,1061.
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Overload is the real environment of launch vehicles. The variable-coefficient transverse differential equation for the free vibration of Euler beam under longitudinal overload was derived on the basis of the Hamiltonian principle. For the variable-coefficient dynamic system, the existence of eigenso...
Intuitionistic fuzzy manufacture knowledge-driven robust tolerance design
Tan Changbai, Hou Dongxu, Wei Wei, Fu Rui
2013, 39(8): 1004-1010.
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Abstract:
Motivated by fuzziness and uncertainty of manufacture factors in their expression, measurement and effects on the production cost, a methodology of intuitionistic fuzzy manufacture knowledge-driven robust tolerance design was developed systematically based on the intuitionistic fuzzy set and robust ...
Design and analysis of four-dimensional force-measurement based on one-dimensional sensors
Liang Jianhong, Luan Yubao, Wang Tianmiao, Zhang Qian
2013, 39(8): 1011-1015.
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A four-dimensional (lift, roll moment, pitch moment and yaw moment) test platform was designed by using one-dimensional force/torque sensors. The multi-component coupling error problem was solved by putting three force sensors in parallel and using universal joints as connectors. Two force moments a...
Performance evaluation of a terrain-aided navigation system under different accuracy of sensor
Zhao Long, Yan Tingjun
2013, 39(8): 1016-1019.
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In order to select the type of the sensor, improve the terrain-aided navigation(TAN) algorithm, and do research on the reliability of the TAN system, the influence of the sensor's accuracy on the match probability was studied in the TAN. Based on different terrain, the factors that impact on match p...
Corrosion properties of two kinds of hull steels welding joints in simulated marine environments
Yu Mei, Wang Ruiyang, Liu Jianhua, Li Songmei
2013, 39(8): 1020-1025.
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Corrosion properties of 10CrNi3MoV and 12MnSiNiCrMo welding joints were investigated by alternate immersion test, neutral salt spray test and constant load tensile stress corrosion test. These tests were designed to simulate circulatory soakage of seawater and marine atmosphere respectively. Dynamic...
Fault diagnosis expert system for electric power system of large-scale UAVs
Zhang Qinling, Guo Hong, Jiang Xu
2013, 39(8): 1026-1030.
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A fault diagnosis expert system of onboard power system and typical power distribution structure was designed for large-scale unmanned aerial vehicles (UAV), based on the test platform built with PXI bus and virtual instrument technology. By means of failure mode analysis and fault tree design, it i...
Transfer trajectory design between L2 in Sun-Earth system and L1 in Sun-Mars system
Lü Jing, Zhang Mingming, Zhang Yongwei
2013, 39(8): 1031-1036.
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The transfer trajectory bwtween L2 in the sun-earth system and L1 in the sun-mars system design using invariant manifold of the restricted three body problem is studied. Considering mars,earth and sun in the same plane, the four body problem of sun-mars-earth-spacecraft was divided into two three bo...
Numerical simulation of cure deformation of composite taper shell with thermal protection layer
Zhang Jikui, Ma Zhiyang, Li Xuemei, Cheng Xiaoquan
2013, 39(8): 1037-1041.
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A three-dimensional finite element model was developed to simulate and predict the cure deformation during the winding processing of a composite taper shell with thermal protection layers. According to the results of numerical simulation, the first cause of the shell's cure deformation was the therm...
Collaborative optimization of hypersonic vehicle based on surrogate model
Ma Shuwei, Du Bin, Chen Wanchun
2013, 39(8): 1042-1047.
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Abstract:
The multidisciplinary models of hypersonic vehicle which similar to the X-51A were built, including configuration, aerodynamics, propulsion, mass, heat and trajectory. The collaborative optimization (CO) method which is one of the multidisciplinary design optimization (MDO) method was used, the surr...
Multivariable model reference adaptive control with application to flight control
Jiang Xu, Zhang Qinling
2013, 39(8): 1048-1052.
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The problem of multivariable model reference adaptive control and its application to flight control were discussed. A model reference adaptive control scheme was proposed for multivariable linear time-invariant systems with arbitrary relative degrees. Based on the SDU factorization, it is only requi...
Investigation of heat transfer enhancement of short pin fins in hot air anti-icing system
Bu Xueqin, Chen Yuchen, Lin Guiping, Peng Long
2013, 39(8): 1053-1057.
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Abstract:
Hot air ice protection is one of the aircraft used anti-icing technology. In order to increase the anti-icing efficiency of the hot air anti-icing system, the use of short pin fins were proposed to enhance the heat transfer. The effect on heat transfer enhancement and flow resistance with different ...
Compact MMW dual-polarized array antenna
Zhai Yu, Su Donglin
2013, 39(8): 1058-1061.
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A compact dual-polarized millimeter wave(MMW) microstrip array antenna was designed. Firstly, the antenna element was designed. The antenna element was fed by coplanar microstrip line and coupling slot. The high polarized-isolation could be obtained by the mixed feed points and reversed phase techno...
Operation model on dynamic allocation system of carrier aircraft
Yue Kuizhi, Sun Cong, Luo Mingqiang, Zhao Hongchao
2013, 39(8): 1062-1068.
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To predict the allocation of carrier aircraft in the carrier warship scientifically, the carrier aircraft transferring between flight deck, hangar and lift and the process of aircraft turnaround were studied based on the dynamic system theory.The stock and flow diagrams and mathematical model about ...
Prediction of thermal expansion properties for composites by micromechanical analysis model
Li Jianfeng, Yan Ying
2013, 39(8): 1069-1073,1085.
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Abstract:
A micromechanics finite element method was used to predict the longitudinal and transverse coefficients of thermal expansion of the following six kinds of composites, T300/5208, P75/934, P75/CE339, C6000/PMR 15, HMS/Borosilicate, P100/2024 Al. The predictions and some other common analytical methods...
Protection against atomic oxygen erosion of oxide coatings for spacecraft materials
Zhang Wen, Yi Min, Shen Zhigang, Zhao Xiaohu
2013, 39(8): 1074-1078.
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To improve the atomic oxygen resistance, TiO2 and SiO2 coatings were deposited on polyimide (Kapton), a common material of spacecrafts using magnetron sputtering. The technic of depositing coating was optimized by selecting the experimental material and parameters to overcome the disadvantage of cra...
Interval analysis and optimization for free vibration of all-composite lattice truss core sandwich beam
Xu Menghui, Qiu Zhiping
2013, 39(8): 1079-1085.
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Abstract:
Considering the uncertainties in composite materials, free vibration of all-composite lattice truss core sandwich beam was studied. By expressing the uncertain parameters in the form of interval vector, a high-accurate collocation interval analysis method, which requires the intervals rather than pr...
Attention allocation modeling under multi-factor condition
Wu Xu, Wanyan Xiaoru, Zhuang Damin
2013, 39(8): 1086-1090.
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To investigate pilot attention allocation, subjective expectancy utility theory and salient-expectancy-effort-value (SEEV) model were applied to establish a forecast model. Based on recent study, the model was consisted of information importance, occurring probability, salient and effort which repre...
Design and analysis of a new kind of hydraulic active filter
Jing Huiqiang, Zhang Xiaoning, Li Yanfeng, Fu Yongling
2013, 39(8): 1091-1095.
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In view of the current hydraulic active filter of large volume, complex structure and other problems, a new type of hydraulic active pressure fluctuation filter (HAPFF) was present with simple structure and small volume. The method of computational fluid dynamics (CFD) was employed to investigate th...
Design parameters sensitivity analysis of aircraft survivability
Yang Zhe, Li Shulin, Zhou Li, Shi Xiaopeng
2013, 39(8): 1096-1101,1121.
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Since parameters sensitivity analysis can analyse the effects of design parameters on aircraft survivability more in-depth, the method of applying sensitivity analysis to aircraft survivability design was studied. The calculation model of aircraft survivability was established based on the model of ...
Numerical simulation of high altitude propeller’s aerodynamic characteristics and wind tunnel test
Wang Yufu, Liu Zhenguo, Tao Guoquan
2013, 39(8): 1102-1105.
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High altitude propeller was studied. The three-dimensional Navier-Stokes equations were used to simulate the complex flow around a high altitude propeller and its aerodynamic characteristics were analyzed, in which the k-ε turbulence model was used. In accordance with similarity criteria such as equ...
Gain scheduled output-feedback control of aircraft using switched polytopic system approach
Li Wei, Wang Qing, Dong Chaoyang
2013, 39(8): 1106-1110.
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As the flight envelope becomes wider, modern aircraft are suffering from ever severer parameter variations over the operating envelope. To cope with the stability and output-feedback stabilization problem, a novel modeling technique was introduced first, which was based on the switched polytopic sys...
Availability simulation assessment system of ground launched ballistic missile
Yang Jikun, Xu Tingxue, Han Zhao, Wang Haowei
2013, 39(8): 1111-1116.
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Significance of availability assessment of ground launched ballistic missile was proposed. An modeling and simulation framework was put forward on the basis of mission time Monte Carlo random discrete event dynamic systems(MTMC-RDEDS) model. And based on model reusing technology, the simulation asse...
Attitude normalization based line feature point cloud extraction approach
Li Wei, Li Xudong, Zhao Huijie, Zhang Ying
2013, 39(8): 1117-1121.
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Extracting the point cloud corresponding to the edges from point cloud of a part is a basic work in the part 3D reconstruction, also a key point of point cloud processing. The commonly used curvature based LFPC(line feature point cloud) extraction approach may have large errors in curve surface fitt...
Hemodynamic simulation of partial pressure suits under pressure
Yang Tao, Ding Li, Zhang Chunguang, Qin Zhifeng
2013, 39(8): 1122-1126.
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To explore the impact of pressure on human body's blood circulation and its variation by studying the variation of pilots' physiological parameters in their capstan partial pressure suits with the method of simulation, which can provide theoretical support for pilots' safety. According to the charac...
Improving the capability of k-ωSST turbulence model for predicting stall characteristics of airfoil
Wen Xiaoqing, Liu Yangwei, Fang Le, Lu Lipeng
2013, 39(8): 1127-1132.
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Two-dimensional numerical simulations of NREL airfoil S825 with k-ωSST turbulence model were conducted. For the k-ωSST turbulence model could not predict the airfoil aerodynamic performance accurately at stall conditions, the non-equilibrium turbulence transport nature was systematically analyzed. I...
Title homogenizing residual stress of heterogeneous component based on vibration stress relief
Xiao Changling, Chen Yunxia, Xu Dan
2013, 39(8): 1133-1136.
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The heterogeneous component inevitably produced non-homogenization residual stress during the assembly process. As time goes on, the residual stress decreased continuously and consequently resulted in non-homogenization stress relaxation. This phenomenon affected the long-term stability of the compo...

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