• 中国科技核心期刊
  • JST收录期刊
  • Scopus收录期刊
  • DOAJ收录期刊

2015 Vol. 23, No. 2

Display Method:
Modal Analysis on the Composite Structure of High Altitude Delivery Carrier
SHUAI Zhi-hao, YAN Hai, CAO Xiao-juan, WANG Zhi-jie
2015, 23(2): 081-85. doi: 10.11993/j.issn.1673-1948.2015.02.001
Abstract:
A new method for modeling the composite structure of high altitude delivery carrier through the way of ‘subsection meshing and joint binding’ is proposed, and a corresponding model is constructed by means of the finite element analysis software Abaqus. Then, the modal analysis on the composite struc...
Application and Development of New Materials in Torpedo Designs
ZHANG Meng, SUN Shu-ri, FENG Dian-zhen
2015, 23(2): 086-89. doi: 10.11993/j.issn.1673-1948.2015.02.002
Abstract:
This paper introduces the basic characteristics of several new materials in torpedo designs with focus on such metal materials as Al-Li alloy, magnesium alloy, titanium alloy, and high temperature alloy, as well as such nonmetallic materials as vibration damping material, ceramic material, and carbo...
Working Reliability Assessment Method for Torpedo in Sea Trial Based on Weibull Distribution
ZHANG Yuan-biao, YE Hao-jie, ZHU Wen-zhen
2015, 23(2): 090-92. doi: 10.11993/j.issn.1673-1948.2015.02.003
Abstract:
To compensate the shortage of working reliability assessment of a torpedo in sea trial with indistinguishable long range and short range based on the conventional binomial distribution, a new assessment method based on the Weibull distribution is proposed. The features of modern torpedoes, such as c...
Numerical Simulation on Echo Signal of Optical Wake Detection System
MA Qing-shan, CHEN Ya-lin, HAO Bao-an, LIU Kun-lun, HE Chen, YAN Bing
2015, 23(2): 093-97. doi: 10.11993/j.issn.1673-1948.2015.02.004
Abstract:
To simulate the influences of optical wake detection system parameters on echo signal, we calculated the light scattering characteristics of single bubble by Mie theory, and solved the optical thickness of a wake cross-section in different ages. Considering the application of an optical wake detecti...
An Improved Blind Speech Separation Algorithm via Time-frequency Masking Based on a Single Acoustic Vector Sensor
CHEN Xiao-yi, WANG Ying-min
2015, 23(2): 098-103. doi: 10.11993/j.issn.1673-1948.2015.02.005
Abstract:
An improved blind speech separation algorithm is presented based on the direction of arrival(DOA) estimation, which is obtained by the precise direction finding ability of a single acoustic vector sensor(AVS). The proposed algorithm works in time-frequency domain, in which the probability at each ti...
A Facticity Judgment Method for Target Detection of Torpedo Active Acoustic Homing
XIONG Qian-kun, TANG Shi-xuan
2015, 23(2): 104-107. doi: 10.11993/j.issn.1673-1948.2015.02.006
Abstract:
To solve the instability problem in target detection of torpedo active acoustic homing, a quantitative facticity judgment method for target detection is put forward. In this method, according to the target parameters detected by a torpedo, such as the range and azimuth, inverse coordinate calculatio...
Study on Feasibility of Torpedo Active Concealed Detection Technology
WU Ya-jun, LU Ding-ding
2015, 23(2): 108-112. doi: 10.11993/j.issn.1673-1948.2015.02.007
Abstract:
To discuss the feasibility and realization of torpedo active concealed detection technology, a model of low probability of intercept(LPI) homing system are established, including a model of homing receiver, a model of reconnaissance receiver and a model of underwater acoustic channel. Then theoretic...
Strategy and Parameter Selection for Motor Optimization Based on Quantum Genetic Algorithm
WU Song, CHEN Gang
2015, 23(2): 113-118. doi: 10.11993/j.issn.1673-1948.2015.02.008
Abstract:
When the quantum genetic algorithm is applied to optimization design of motor structure, it is necessary to deal with the relative strategies and parameters properly, which needs more user′s experience. In this study, taking a permanent magnet brushless DC double-rotor motor with an outer rotating m...
An Accurate Computation Method of Vibration Level Based on Comb Band-stop Filter
SUN Tao, GAO Hui-zhong
2015, 23(2): 119-123. doi: 10.11993/j.issn.1673-1948.2015.02.009
Abstract:
The existing 1/3 octave spectrum approaches are usually supposed to test signals without interference. Obviously, this strategy is no more effective when confronted with the signals containing band noise. In this paper, aiming at the regular noise interference, such as comb noise, the Fourier kernel...
A Thrust Test Method for Water Ramjet Engine
WANG Xiao-xin, DANG Jian-jun, ZHANG Xue-lei, LUO Kai
2015, 23(2): 124-128. doi: 10.11993/j.issn.1673-1948.2015.02.010
Abstract:
To explore a reasonable thrust test method for the water ramjet engine used in supercavitating underwater vehicle, an associative theoretical model between the engine nozzle thrust value and flow field parameters is established by means of theoretical analysis and simulation, and an underwater test ...
Influence of Eccentric Initiation on Torpedo Directional Warhead Power:
QU Da-wei, WANG Tuan-meng
2015, 23(2): 129-133. doi: 10.11993/j.issn.1673-1948.2015.02.011
Abstract:
Directional initiation technology can increase the power utilization ratio of directional warhead for a torpedo, and enhance the damage to large ship target. In this study, numerical simulation and experiment were conducted to investigate the shock wave overpressure of the scale-reduced prototype of...
Characterization of Joint Source-channel Coding in Buoy Wireless Communication
XUE Qing-tian, XU Yu-yang, ZUO Xiao-ya, ZHU Yun-zhou, ZHOU Hu, LI Bo, YAN Zhong-jiang
2015, 23(2): 134-138. doi: 10.11993/j.issn.1673-1948.2015.02.012
Abstract:
Buoy wireless communication system can transmit and analyze battlefield environment information in time. But its working environment has limited resources, time-varying characteristics, and so on. Coding based on the principle of separation is not suitable for this complicated situation. This paper ...
Research on Anti-Shock Capability of Shipborne Torpedo Launcher Based on Dynamic Design Analysis Method
HE Jia-lei, ZHOU Chuan
2015, 23(2): 139-144. doi: 10.11993/j.issn.1673-1948.2015.02.013
Abstract:
The anti-shock capability of marine equipment and system is an important factor in determining the vitality of a ship in wartime. Based on the modal test for shipborne torpedo triple launcher and the finite element modeling technology, we establish a finite element analysis model of the launcher to ...
An Aiming Point Selection Method for Wake Homing Torpedo Against Elusive Maneuver
ZHANG Hong-gang, WANG Peng, ZHANG Jing-yuan
2015, 23(2): 145-149. doi: 10.11993/j.issn.1673-1948.2015.02.014
Abstract:
With torpedo alarm distance increasing, a surface ship can effectively evade the attack of a wake homing torpedo by elusive maneuver. In this study, aiming at typical elusion mode, the critical alarm distance for a surface ship to successfully evade a wake homing torpedo is simulated with different ...
Research on Capability of Attacking Submarine by Cruise Assisted Torpedo with Instruction Correction
JIA Yue, LIANG Liang, REN Lei
2015, 23(2): 150-156. doi: 10.11993/j.issn.1673-1948.2015.02.015
Abstract:
This paper introduces the instruction correction function of a cruise assisted torpedo and the process of attacking submarine, and analyzes the principles and correction occasion of instruction correction shooting. The influencing factors on instruction correction shooting are investigated in terms ...
Application of Prognostics and Health Management Technology to Design of Torpedo PHM Model
WANG Hao, GAO Jiang
2015, 23(2): 157-160. doi: 10.11993/j.issn.1673-1948.2015.02.016
Abstract:
Taking the successful application of the prognostics and health management (PHM) technology for example and considering the maintenance features of large weapon systems in service, the key theory and techniques, as well as the complexity of PHM technology, are discussed. And a torpedo PHM model is d...
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