Jin C.,Cooperation Technology |
Jin C.,Chengdu Aeronautic Vocational and Technical College |
Ling L.,Naval Aviation Engineering Institute |
Bin T.,Cooperation Technology |
Bin T.,Chengdu Aeronautic Vocational and Technical College
2013 International Conference on Communications, Circuits and Systems, ICCCAS 2013 | Year: 2013
In recent years, with the upgrading of airborne device, most power source circuit of airborne devices use single-phase bridge and three-phase bridge uncontrolled rectifying circuit. Nonlinear characteristics of the rectifier circuit bring serious harmonic interference to the AC power system of the aircraft. This paper simulate and analyses the three-phase bridge circuit of airborne device power source with the help of Matlab, in order to help the governance of the aircraft AC power system harmonic. © 2013 IEEE.
Wang H.,Naval Aviation Engineering Institute |
Wang H.,PLA Air Force Aviation University |
Liu Z.,PLA Air Force Aviation University |
Fang X.,PLA Air Force Aviation University |
And 2 more authors.
Guangdian Gongcheng/Opto-Electronic Engineering | Year: 2016
Bombers in our army have not been equipped with the Electro-Optic Targeting Systems (EOTS), which cannot observe targets at night and as a result cannot conduct precise bombing with the all-optic targeting systems as their bombing targeting systems, so the EOTS is needed. To solve the problem of multiscale image fusion in the process of implement the EOTS, the purpose of image information fusion has been tried to achieve through the multiscale edge fusion. With the fusion data compression, the influence of noise on the fusion result has been tried to reduce at the same time. Based on the multiscale edge theory, an image fusion method for bombing EOTS is proposed, and the effectiveness of the proposed method is verified by experiment. Results show that the proposed image fusion method based on multiscale edge has robustness against mismatch and noise, and provides a theoretical basis for the realization of the bombing EOTS. © 2016, Editorial Office of Opto-Electronic Engineering. All right reserved.
Wang H.P.,Naval Aviation Engineering Institute |
Liu Z.Q.,PLA Air Force Aviation University
Applied Mechanics and Materials | Year: 2013
The searching phase of TV guided missile is usually divided into three different stages as the navigation, homing and terminal guidance. In this paper, guidance laws in different phases are analyzed. To solve the problem of target acquisition, signal following and navigation precision during the period of navigation, methods of integrated guidance with three geostationary satellites orientation and INS in high dynamic circumstances are put forward. The mathematics models of pre - guiding and searching are established corresponding to the traits of smaller TV seeker instantaneous field, limited shooter reacting velocity, low hunting speed and narrow searching area. The compound guidance methods which integrate the tracking and the proportional in terminal phase are raised in order to increase the guiding precision and to decrease the undershoot value. Experiment shows that the guiding precision is raised by a long way.CLC number: TJ765.4+3 Document Code: B. © (2013) Trans Tech Publications, Switzerland.
Zhu J.,Nanjing University of Aeronautics and Astronautics |
Huang G.,Nanjing University of Aeronautics and Astronautics |
Fu X.,Nanjing University of Aeronautics and Astronautics |
Fu Y.,Nanjing University of Aeronautics and Astronautics |
Yu H.,Naval Aviation Engineering Institute
Proceedings of the ASME Turbo Expo | Year: 2013
This paper presents a micro pulsed aspirated jet concept to suppress the flow separation in compressors. According to this concept, a kind of pulsed jet and an imitating cascade channel has been established; the characteristic frequency of separation vortex is about 266Hz. The experimental and numerical investigation about the unsteady frequency has been finished, and when the frequency of pulsed jet is close to the characteristic frequency of separation vortex, the control effects are more obvious. Based on the numerical results, the proper orthogonal decomposition (POD) method is introduced to analyze the unsteady control mechanism, and the spatial and temporal structure of unsteady flow field can be decoupled by POD method. The POD analysis results show that the main effect of unsteady pulsed jet is reallocating the energy of each mode, and selectively strengthening or weakening certain modes; the effect of steady jet is overall reducing the energy of high order modes. Based on the reasonable control parameters of pulsed jet, the energy in higher modes will be transferred to the average flow mode, and the translation of modal energy is coming from the reconstructing of spatial flow structures and the ordering of modal evolution characteristic. Finally, the validation of experimental investigation has been finished; and the credibility of the analysis is also enhanced. Copyright © 2013 by ASME.
Wang W.-Y.,Naval Aviation Engineering Institute |
Tang J.-G.,Naval Aviation Engineering Institute |
Hou X.-L.,Naval Aviation Engineering Institute
ICALIP 2010 - 2010 International Conference on Audio, Language and Image Processing, Proceedings | Year: 2010
Distributed operation simulation system based on HLA can simulate some intelligent behavior of the simulation entity by the way of CGF. However, current CGF is not able to accomplish desired tactical instruction simulation and flexible tactical behavior simulation. Connecting some real equipment, platform simulator and key devices to simulation system, man and some real equipment or approximate real equipment are integrated to simulation system. It will increase simulation credibility significantly. The paper researches on modular frame design of virtual flight simulator on a certain type of fighter in naval aeronautical equipment operation simulation. The thought of system framework based on EXP-50 image generator is proposed. Primary data flow in simulator is analyzed. The battlefield entity generation and management technology based on VR-Link and opcode, large scale terrain generation technology based on ECT and the development technology on battlefield environment are illustrated. ©2010 IEEE.