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Meng H.-Z.,Shanxi North Huifeng Mechatronical Co.
Dandao Xuebao/Journal of Ballistics | Year: 2010

To study the problem of rotation rate design for spinning canard missile with single channel control, the dynamic characteristics of missile was analyzed to obtain the law of the missile gain varying with control force frequency. The optimal ratio of control force frequency to missile natural frequency was determined. By analyzing the special phase relation between the normal acceleration produced by attack angle and that produced by control force, the physical reason resulting in the optimal ratio was given. According to the obtained optimal ratio, the best filtering effect of the missile on the control force of periodical variation can be reached by designing rotation rate. The validity of research result was verified by mathematic simulation. Source


Mei Y.-S.,Beijing Institute of Technology | Yu J.-Q.,Beijing Institute of Technology | Yu T.-P.,Shanxi North Huifeng Mechatronical Co. | Li J.-X.,Beijing Institute of Electronic System Engineering
Journal of Beijing Institute of Technology (English Edition) | Year: 2013

Determining characteristics of the initial fixed-focus are a key technique for the design of laser beam riding guidance missile. Through analyzing the effects of the initial cone information field in guidance and control system of missile, those effects are considered as an approximate lead compensation network. The position and time of guidance spot initial fixed-focus can be designed. This method is applied to determine the characteristics of the initial fixed-focus of laser information field for a laser beam guidance gun-launched missile. The results of design and simulation show that the initial cone information field apparently speeds up convergence on the initial trajectory, and provides a guarantee for the implementation of minimum range index of a missile system. © Copyright. Source


Guo Q.-Y.,Beijing Institute of Technology | Jiang Y.,Beijing Institute of Technology | Guo L.-Q.,Shanxi North Huifeng Mechatronical Co. | Shi G.-C.,Beijing Institute of Technology
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | Year: 2011

Two optimal solutions are proposed for the empennages to solve the problem of low static stability of gun-launched missile. Based on the three-dimension N-S equations combined with S -A turbulence model, the computational fluid dynamics (CFD) numerical simulation was conducted to investigate the aerodynamic characteristics of gun-launched missile. Parameters of the aerodynamic characteristics of gun-launched missile were obtained. Computational aerodynamic characteristics were found to be in good agreement with wind tunnel test results. The research results show that the proposed two optimal solutions can effectively improve the static stability and the lift force of gun-launched missile. Source


Guo Q.-Y.,Beijing Institute of Technology | Jiang Y.,Beijing Institute of Technology | Yu T.-P.,Shanxi North Huifeng Mechatronical Co. | Shi G.-C.,Beijing Institute of Technology
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | Year: 2011

The method of numerical simulation was used to investigate the influence of the side jet flow on the aerodynamic characteristics of gun-launched missile. Based on three-dimension N-S equations combined with S-A turbulence model, the numerical simulation of computational fluid dynamics (CFD) was implemented. It is found that the computational aerodynamic characteristics are to be in good agreement with the results from wind tunnel test. The numerical simulation for external flow field of gun-launched missile with side jet flow was performed. The result from simulating performance also shows that the side jet flow have significant influence on the flow field and the aerodynamic characteristics of gun-launched missile. Source

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