Advanced Search

2002 Vol. 28, No. 4

  Previous Issue | Next Issue 
Display Method:
Optimal Terminal Missile Guidance Law Based on Fuzzy Neural Networks
DONG Chao-yang, JING Shao-guang, WANG Qing, ZHANG Ming
2002, 28(4): 373-375.
Abstract References Relative Articles Resource File Access Statistics iconViews 2947 iconDownload 723
Abstract:
Because fuzzy neural networks technique has the advantages not only strong adaptability to nonlinear systems but also quick learning ability, it has been applied to nonlinear systems successfully. an optimal terminal missile guidance law based on fuzzy neural networks for the advanced missiles with ...
Numerical Investigation on Radiation of Enclosure Containing Non-Uniform Radiative Gas
ZHANG Xiao-ying, WANG Xian-wei, ZHU Gu-jun
2002, 28(4): 376-378.
Abstract References Relative Articles Resource File Access Statistics iconViews 2878 iconDownload 957
Abstract:
To calculate the infrared radiation characteristics of an enclosure containing inhomogeneous radiative gas, a method was developed by resolving the integral equations of radiative transfer. Attention was also focused on how to calculate the spatial distribution and the spectral distribution of radia...
Geometrical Problems Involved in Radiation-Calculation of Heteromorphosis Cavity
ZHANG Xiao-ying, ZHANG Jian-qiang
2002, 28(4): 379-382.
Abstract References Relative Articles Resource File Access Statistics iconViews 2619 iconDownload 1054
Abstract:
To calculate numerically the radiation of a enclosure within a heteromorphosis cavity, attention was focused on: how to decide the visibility between two surfaces, how to improve the old method of configuration factor computation, how to approximately and efficiently decide the radiation resource of...
Novel Fault Detection Approach and Its Application to Helicopter Actuators
DAI Ji-yang, MAO Jian-qin, XU Dong-sheng
2002, 28(4): 383-386.
Abstract References Relative Articles Resource File Access Statistics iconViews 2910 iconDownload 818
Abstract:
A new fault detection approach was presented, in which a key coefficient group consisting of partial wavelet coefficients was used to describe fault features, a fuzzy-tree was taken as the model of fault feature classification. As an example,the method was applied to the real-time fault detection of...
Experimental Investigation on High-Loading Transonic Compressor Rotor
DENG Bao-yang, GUI Xing-min, YUAN Wei, NIE Chao-qun
2002, 28(4): 387-390.
Abstract References Relative Articles Resource File Access Statistics iconViews 3534 iconDownload 807
Abstract:
Unsteady pressure transducers with high frequency response were used to investigate tip clearance flows in a transonic compressor rotor (ATS-2), which is a high-loading compressor with 2.2 designed pressure ratio. Static pressure contours were obtained for different operating conditions at several d...
Research of Air Traffic Control Simulation Environment
YANG Zhen-peng, YU Bao-feng, WANG Xing-ren
2002, 28(4): 391-394.
Abstract References Relative Articles Resource File Access Statistics iconViews 2713 iconDownload 1008
Abstract:
A simulation method of air traffic control was studied, which is able to support training and some research project. The simulation content of air traffic control was introduced. The framework and model of simulation environment were established by analyzing its important factors. Based on technique...
Numerical Analysis of Complex Flowfields Around Multi-Wing Missiles and Its Aerodynamic Force Computations
HUANG Xian-lu, YAN Chao, CHEN Liang, LONG Yao-song
2002, 28(4): 395-398.
Abstract References Relative Articles Resource File Access Statistics iconViews 3212 iconDownload 921
Abstract:
The applications of modified Jameson's scheme to the complex flow around the missiles with canards and tails, result in good agreement between computations and experiment data of the standard missile model of U.S.A.. In computations, the latest modifications of Jameson's scheme are adopted to extend...
Effects of Heat Treatment Temperature on Properties of Hard Chromium Coating
ZHANG Qi, GUAN Shan, HU Ru-nan
2002, 28(4): 399-401.
Abstract References Relative Articles Resource File Access Statistics iconViews 2827 iconDownload 1334
Abstract:
Microhardness and wear resistance of a hard chromium coating obtained with a solution containing organic additive were investigated as a function of heat treatment temperature. Meanwhile, XPS, EDAX and X-ray diffraction analyses were conducted to reveal the underlying micromechanism. It was found th...
Third-Order Constitutive Law for Nonlinear Elastic Materials
WANG Shou-mei, XU Ming, LI Ning
2002, 28(4): 402-404.
Abstract References Relative Articles Resource File Access Statistics iconViews 2847 iconDownload 1309
Abstract:
A rigorous derivation of constitutive laws for nonlinear behavior of compressible and incompressible elasticity is presented. As a tensor-valued function with a single tensor variable, i.e. strain, stress is expressed as a tensor polynomial that contains high order elasticity tensors. Various symmet...
Agent Coordination Mechanisms for Scheduling System Based MAS
ZENG Bo, YANG Jian-jun
2002, 28(4): 405-408.
Abstract References Relative Articles Resource File Access Statistics iconViews 2799 iconDownload 875
Abstract:
To overcome CNP's (Contract Net Protocol) defects in Shop-Floor Scheduling System based MAS, a new method was presented dealing with task distributing and scheduling based on GPGP (Generalized Partial Global Planning) coordination mechanisms, and TAEMS (Task Analysis, Environment Modeling and Simula...
Design of Telemeter and Telecommand Base Station of Pilotless Helicopter with Object-Oriented Method
ZHAO Qi, ZHANG Xiao-lin
2002, 28(4): 409-412.
Abstract References Relative Articles Resource File Access Statistics iconViews 2598 iconDownload 982
Abstract:
Object-oriented method is more and more widely used in the system design. The requirement and characteristics of the monitoring and processing system of a coaxal pilotless helicopter are analyzed .The system is an important component part in pilotless helicopter. In the course of executing task, the...
Study of Atomizing Characteristics of Two-Phase Flow Emulsification Water Mist Nozzles
YANG Li-jun, WANG Wei, HU Ze-bao, ZHANG Zhen-peng
2002, 28(4): 413-416.
Abstract References Relative Articles Resource File Access Statistics iconViews 3228 iconDownload 1260
Abstract:
For the objective of studying the structure of an atomizing nozzle which is the key component of a water mist fire-fighting equipment, this paper presents a detailed experimental investigation of the atomizing characteristics of a two-phase flow emulsification nozzle by the use of a Malvern particle...
Coherent Structures in Turbulent Boundary Layer with Adverse Pressure Gradients
LU Li-peng, LI Zhao-rui
2002, 28(4): 417-419.
Abstract References Relative Articles Resource File Access Statistics iconViews 4551 iconDownload 1049
Abstract:
By using the idea of resonant triad of the theory of hydrodynamic stability, the coherent structures in a turbulent boundary layer were investigated as a function of steady-adverse-pressure-gradient(SAPG) and changing-adverse-pressure-gradient(CAPG) flow cases. It was found that the adverse pressure...
Simulated Design of Multifunctional Cockpit Display with Preview and Predictor Function
YUAN Hao, YU Li-ming, WANG Zhan-lin
2002, 28(4): 420-423.
Abstract References Relative Articles Resource File Access Statistics iconViews 2676 iconDownload 900
Abstract:
The preview and predictive information is introduced to cockpit display to make the future state of flight perceptible, so as to exert advanced control to vehicles. The multifunctional cockpit display with preview and predictor function is preliminarily designed by analyzing the landing process of a...
Wall Pressure Distribution Induced by Saw-Tooth Flap
ZHANG Pan-feng, WANG Jin-jun, LI Ya-chen
2002, 28(4): 424-427.
Abstract References Relative Articles Resource File Access Statistics iconViews 2852 iconDownload 869
Abstract:
Wall pressure distribution induced by the saw-tooth flap has been investigated with electronic pressure scanner in wind tunnel. The results showed that the shear layer of the saw-tooth flap separated at x/h=(6 upstream and reattached at x/h≈20 downstream, which is the same with the plate flap; The t...
Research on Geometrical Features of Assembly of Aerocraft and Container
MENG Cai, WANG Tian-miao, WANG Jia-shun, WANG Qing-zhu
2002, 28(4): 428-431.
Abstract References Relative Articles Resource File Access Statistics iconViews 3043 iconDownload 844
Abstract:
Based on the advanced adapter-based container launching technology, the geometrical features of the assembly of aerocraft & container are studied. Taking advantage of the planar assembly model, the tolerances to fit clearances are analyzed, which have effects on size, shape, location of areocraf...
Background Function for Generation of Unstructured Grids
ZENG Lan-ying, WU Song-ping
2002, 28(4): 432-434.
Abstract References Relative Articles Resource File Access Statistics iconViews 2889 iconDownload 989
Abstract:
Background information is one of the important aspects in the generation of unstructured grids by advancing-front method. Background information is generally obtained through creating background grids. To avoid the waste of time and memories in creating background grids, the article proposes an adap...
Integrated Aerodynamic/Structural Design Optimization for Wing of Trunkliner
DONG Bo, ZHANG Xiao-dong, LI Zheng-neng
2002, 28(4): 435-437.
Abstract References Relative Articles Resource File Access Statistics iconViews 2802 iconDownload 846
Abstract:
An integrated aerodynamic/structural design method for a wing of trunkliner is studied to obtain a tool for tradeoff between the contradictory demands of aerodynamic and structural design. Non-isentropic potential equation CFD method and beam theory model are introduced into the analysis of the desi...
Bucking Delaminating of Composite Sandwich Plates under Hygrothermal Conditions
JIANG Li, ZHANG Zhi-min
2002, 28(4): 438-442.
Abstract References Relative Articles Resource File Access Statistics iconViews 2666 iconDownload 847
Abstract:
To analyze the buckling of elliptical face-core delaminating in composite sandwich plates, a two-dimensional elastic foundation model was established. A displacement function was considered to describe the buckling shapes. By taking the effects of hygrothermal conditions, of the core and of the comp...
Method of Using Neural Network Combined with D-S Theory to Carry Out HRR Target Recognition
WANG Mao-lu, LI Shao-hong, MAO Shi-yi
2002, 28(4): 443-446.
Abstract References Relative Articles Resource File Access Statistics iconViews 3058 iconDownload 810
Abstract:
Based on the Shafer-Dempster reasoning theory, the method of coherent and non-coherent data fusion is studied. The algorithms of multi-sensor data fusion, which include center fusion and distributed fusion. It has been improved that the result of distributed recursive algorithms is better than other...
Numerical Simulation of Multipath Effect of Active Radar Seeker
DUAN Shi-zhong, ZHOU Yin-qing, ZHANG Meng, WANG Zu-li
2002, 28(4): 447-450.
Abstract References Relative Articles Resource File Access Statistics iconViews 3140 iconDownload 1045
Abstract:
A time domain model for complex envelope simulation of multipath effect is presented based on multi-reflect-point target model. The model was used to calculate return waves of flat and fluctuant surfaces of land or sea. The 3D surface model of land and sea was built by the random fractal interpolati...
Automatic Selection for Standard Joint Locator in Aircraft Assembly Fixtures
ZHENG Guo-lei, ZHU Xin-xiong, XU De, ZENG Chun-ling
2002, 28(4): 451-454.
Abstract References Relative Articles Resource File Access Statistics iconViews 3205 iconDownload 784
Abstract:
Single structural parts are widely used in the structure of modern aircraft, and this leads to mostly adopt components in aircraft assembly fixtures to locate product joints and process holes. Each of these components usually consists of a working part and a standard joint locator. In order to decre...
Data Management in Conceptual Aircraft Design Process
WANG Gang-lin, WU Zhe
2002, 28(4): 455-458.
Abstract References Relative Articles Resource File Access Statistics iconViews 2950 iconDownload 1099
Abstract:
Data used in conceptual aircraft design process is extraordinary excessive. It is composed of many kinds of data, such as digital, diagram and document, etc. Especially, the data has the strong requirement of security. This paper was focused on how to use the advanced database technology to manage a...
Experimental Investigation on Characteristics of Heat Transfer and Pressure Drop of Unusual Spirally Fluted Tube
CUI Hai-ting, YUAN Xiu-gan, YAO Zhong-peng
2002, 28(4): 459-461.
Abstract References Relative Articles Resource File Access Statistics iconViews 3055 iconDownload 1011
Abstract:
Experiments were conducted on a new heat transfer enhanced tube-unusual spirally fluted tube developed based on spirally corrugated ones. Heat transfer and pressure drop characteristics of the tube with turbulent flow were examined as a function of tube geometry and water flow rate. Statistical corr...
General Design and Control Law of BackLaunched AirtoAir Missile
WANG Yi-ning, JIANG Yu-xian
2002, 28(4): 462-464.
Abstract References Relative Articles Resource File Access Statistics iconViews 2899 iconDownload 779
Abstract:
The realization to launch air-to-air missile backward is studied.The necessity and possibility on technology are clarified.Then the issues encluded in engineering practice are analysed,such as the still stability of missile's attitude motion. A synthetic scheme to solve the essues is presented. Base...
Theoretical Study on Vibration Active Control of Power Supply and Pipeline Systems
JIAO Zong-xia, CHEN Ping, HUA Qing, WANG Shao-ping
2002, 28(4): 465-469.
Abstract References Relative Articles Resource File Access Statistics iconViews 3060 iconDownload 1449
Abstract:
The vibrations problem of fluid power supply and piping systems in aircraft is discussed,and presented a vibration active control method to reduce the vibrations of fluid power supply and piping systems. The multi-layer PZT is taken as the driver which is of characteristics of large force output, hi...
Application of Robust Optimal Control to Servo Systems
YAN Xi-jun, GAO Jin-yuan
2002, 28(4): 470-472.
Abstract References Relative Articles Resource File Access Statistics iconViews 2774 iconDownload 1091
Abstract:
Considering the characteristics of servo system, a robust-optimal control method to deal with object's uncertainty and disturbance was proposed. The method was based on an improved control structure, and integrated the excellences of robust control method and optimal control method. The achievement ...
Experimental Research on Laser Bending Mechanism
WANG Xiu
2002, 28(4): 473-476.
Abstract References Relative Articles Resource File Access Statistics iconViews 2871 iconDownload 886
Abstract:
The deformation of laser bending is identified to be a result of the thermal strain and phase transformation strain through real-time measuring the dynamic micro-deformation of the specimen and microstructure analysis in the cross section of heated region center under the condition of laser-material...
Fault Diagnosis for Navigational Sensors Based on Modulated Gaussian Wavelet Transformation
WENG Hai-na, FANG Jian-cheng, YANG Gong-liu, ZHANG Zhen-peng
2002, 28(4): 477-480.
Abstract References Relative Articles Resource File Access Statistics iconViews 3061 iconDownload 773
Abstract:
In order to improve the online fault-detecting capability of multi-sensor integrated navigation system, a MGWT-based fault diagnosis algorithm for navigation sensors was presented based on analysis of characteristics of modulated Gaussian wavelet (MGW). With this method, the effectiveness of each se...

Copyright © Journal of Beijing University of Aeronautics and Astronautics

Address: Editorial Department of Journal of Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing Post Code: 100191 Email: jbuaa@buaa.edu.cn

Supported by: Beijing Renhe Information Technology Co., Ltd.