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2016 Vol. 42, No. 6

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Volume 42 Issue62016
2016 Year 42 Volume 6 Issue E-journal
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SVM fault diagnosis of autopilot based on quantum inspired gravitational search algorithm
LI Haitao, HE Yuzhu, SONG Ping
2016, 42(6): 1093-1098. doi: 10.13700/j.bh.1001-5965.2015.0417
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With regard to the lack of the sample of faults in the test of autopilot, a model of fault diagnosis based on support vector machine (SVM) optimized by quantum inspired gravitational search algorithm is put forward. SVM does well in solving the few samples and nonlinear problem, which is suitable fo...
Effect of air cooled spraybar heat insulation sleeve height on performance of mixer and diffuser
LIU Youhong, ZHOU Kaifu, NIU Junjie
2016, 42(6): 1099-1106. doi: 10.13700/j.bh.1001-5965.2015.0425
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For the mixer and diffuser of air cooled spraybar rod, the three-dimensional numerical simulation model based on the Navier-Stokes equation was created. Through numerical simulation, the principle of the effect of different air cooled spraybar heat insulation sleeve heights on the mixer and diffuser...
Integrated single X-ray pulsar and starlight navigation based on virtual observation value
YANG Bo, HU Shengman, SUN Hui, XU Fan
2016, 42(6): 1107-1115. doi: 10.13700/j.bh.1001-5965.2015.0422
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Conventional X-ray pulsar navigation satellite system needs to observe 3 to 4 pulsars at the same time, thus the mass and consumption of the payload will increase. Therefore, the technology using single detector is the key measure to realize X-ray pulsar navigation. In order to solve the problem of ...
Omnidirectional true proportional navigation: Novel guidance law for interception of high-speed targets
BAI Guoyu, SHEN Huairong, LI Yuan, YAN Liang
2016, 42(6): 1116-1125. doi: 10.13700/j.bh.1001-5965.2015.0377
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Aiming at the interception of high-speed targets, a new interception guidance law called omnidirectional true proportional navigation (OTPN) was proposed, which adapted to variable-speed interception and can automatically shift interception mode, possessing both head-pursuit and head-on interception...
Vertical profile planning method for general aviation flight in complex multi-constraints conditions
WANG Xiaoliang, MA Yabing, WANG Peng, WU Renbiao
2016, 42(6): 1126-1133. doi: 10.13700/j.bh.1001-5965.2015.0450
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A method for trajectory planning based on improved A-star algorithm is presented, which can be used for solving the problem of vertical profile trajectory planning for general aviation aircraft in complex multi-constraints conditions. Firstly, according to the characteristic of low altitude flight f...
SVRM-assisted soil moisture retrieval method using reflected signal from BeiDou GEO satellites
YANG Lei, WU Qiulan, ZHANG Bo, LIANG Yong, HONG Xuebao, ZOU Wenbo
2016, 42(6): 1134-1141. doi: 10.13700/j.bh.1001-5965.2015.0656
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We propose a support vector regression machine (SVRM)-assisted soil moisture retrieval method using the reflected signal from BeiDou geosynchronous orbit (GEO) satellites. This method uses a right hand circular polarization (RHCP) antenna and a left hand circular polarization (LHCP) antenna to gain ...
Sensor placement method based on bond graph models
LING Mu, YUAN Haiwen
2016, 42(6): 1142-1148. doi: 10.13700/j.bh.1001-5965.2015.0400
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In order to study the influence of sensor placement on fault diagnosis, a new sensor placement method based on bond graph model was proposed. A group of virtual sensor test points were set in bond graph model, then the information of bond graph structure and causality constraints were used to deduce...
Rapid modeling of impingement pipe in turbine blade
LI Jixing, XI Ping
2016, 42(6): 1149-1155. doi: 10.13700/j.bh.1001-5965.2015.0386
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Impingement pipe is the core component of the impingement cooling in turbine blade. In order to realize the rapid modeling of impingement pipe in turbine blade with complex cooling structure, a generative rapid modeling method was proposed.Firstly, the body of pipe was created by section curves whic...
Best position to apply an impulse in a planar swing-by
JIA Jianhua, LYU Jing, WANG Qi
2016, 42(6): 1156-1161. doi: 10.13700/j.bh.1001-5965.2015.0409
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Applying an impulsive thrust during a close encounter with a celestial body can significantly improve the efficiency of the swing-by maneuver. The impulse is usually applied at the periapsis in much literature, but there is no proof that periapsis is the optimal position. In order to study the best ...
SIFs of interfacial crack using generalized extended finite element method
SU Yi, WANG Shengnan, LU Longkun
2016, 42(6): 1162-1168. doi: 10.13700/j.bh.1001-5965.2015.0376
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Generalized extended finite element method (GXFEM) is a new numerical simulation method which combines both the generalized finite element and the extended finite element. The principle of the generalized extended finite element method for analyzing the stress intensity factor (SIF) of bi-material i...
Model providing QoS guarantee for feedback-free MAC in aeronautical Ad Hoc networks
GAO Xiaolin, HAN Feng, YAN Jian, LU Jianhua
2016, 42(6): 1169-1175. doi: 10.13700/j.bh.1001-5965.2015.0384
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In aeronautical Ad Hoc networks,in order to meet the strict quality of service (QoS) requirements of high priority traffic with high dynamics,a modeling method and a corresponding threshold setting method for priority feedback-free media access control (MAC) protocols were proposed to guarante etime...
Practical nonlinear control allocation method based on feedback of position of surface
LYU Yongxi, ZHANG Weiguo, SHI Jingping, QU Xiaobo, CAO Yuyan
2016, 42(6): 1176-1184. doi: 10.13700/j.bh.1001-5965.2015.0411
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To focus on the problems of nonlinearity and coupling between the moment coefficients and the surface deflections when the aircraft autonomously takes off,lands and flies with high angles of attack,a practical and novel nonlinear control allocation method based on feedback of position of surface was...
Reliability evaluation of radar power amplification system considering epistemic uncertainty
PAN Gang, SHANG Chaoxuan, LIANG Yuying, CAI Jinyan, MENG Yafeng
2016, 42(6): 1185-1194. doi: 10.13700/j.bh.1001-5965.2015.0390
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There is epistemic uncertainty in degradation law of a high-reliability component because it is hard to obtain its adequate performance data within a short time,and system reliability cannot be accurately estimated. For the purpose of accurate estimation of system reliability,assuming that the compo...
Numerical analysis of unstable combustion developing process in model combustor
FENG Wei, NIE Wansheng, LI Bin, ZHENG Gang
2016, 42(6): 1195-1202. doi: 10.13700/j.bh.1001-5965.2015.0457
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Gas-liquid two-phase unsteady combustion process was simulated with the Euler-Lagrange method to analyze the combustion instability, which was observed in hypergolic propellant combustor. The pressure oscillations amplitude and spectral characteristics agreed with the experimental results. And the v...
Optimized dictionary learning algorithm for compressive data gathering
YI Kefu, WANG Donghao, WAN Jiangwen
2016, 42(6): 1203-1209. doi: 10.13700/j.bh.1001-5965.2015.0375
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To improve the adaptability of compressive data gathering for various classes of sensory data, and to reduce the recovery error caused by environmental noise, an optimized dictionary learning algorithm was proposed to adaptively construct the sparse dictionary in compressive data gathering. Theoreti...
Some influence factors in aerodynamic heat transfer numerical simulation of jet-interaction flow
LIN Boxi, YAN Chao, LI Yachao
2016, 42(6): 1210-1218. doi: 10.13700/j.bh.1001-5965.2015.0379
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When simulate the aerothermal environment of thrust jet and its interaction flow on an engineering vehicle geometry, people always use some approximate modeling to the full chemical reaction flow,then the influence to the simulation results of an approximate treatment for real gas and the modificati...
New method of scatterers association and 3D reconstruction based on multi-hypothesis tracking
BI Yanxian, WEI Shaoming, WANG Jun, ZHANG Yaotian, SUN Zhongsheng, YUAN Changshun
2016, 42(6): 1219-1227. doi: 10.13700/j.bh.1001-5965.2015.0380
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Aiming at the problems of associating radar target scattering centers from the unknown perspective of one-dimensional range,in order to associate the radar target scattering centers at unknown radar line of sight,a new scatterers association method based on auxiliary information of scatterers intens...
Multipath mitigation algorithm with hierarchical search based on MEDLL
YE Jinyu, KOU Yanhong
2016, 42(6): 1228-1235. doi: 10.13700/j.bh.1001-5965.2015.0419
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Multipath mitigation techniques using parametric baseband processing, represented by multipath estimating delay locked loop (MEDLL), have attracted widespread attention by estimating the parameters of direct path and multipath signals simultaneously. The improvement of the estimation accuracy for su...
Similarity-based remaining useful life prediction method under varying operational conditions
LI Qi, GAO Zhanbao, LI Shanying, LI Baoan
2016, 42(6): 1236-1243. doi: 10.13700/j.bh.1001-5965.2015.0396
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Remaining useful life (RUL) prediction is the core task of prognostic and health management (PHM). A similarity-based RUL prediction method under varying operational conditions was presented. Similarity-based RUL prediction method does not need to build a model for entire complex system but can prov...
Influence of primary swirl offset on downstream flowfield of dual-swirl cup
LIU Chengchuan, XU Quanhong, YU Bowen
2016, 42(6): 1244-1249. doi: 10.13700/j.bh.1001-5965.2015.0402
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Dual-swirl cup has been widely used in aero-engine combustor because of excellent comprehensive combustion performance. But it is inevitable that there will be slight misalignment during its assembly, and in order to examine whether these subtle errors will affect combustion performance, more detail...
Effects of RP-3's wall coke deposition on flow resistance under supercritical pressure
WANG Yue, GUO Jun, DENG Hongwu, HUANG Haoran, JIA Zhouxia
2016, 42(6): 1250-1255. doi: 10.13700/j.bh.1001-5965.2015.0403
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The effect of the jet fuel RP-3 coking deposition in stainless micro-tube on flow resistance and heat transfer characteristics under long heating condition is analyzed based on experimental results. In the experiment, fuel flowing through miniature tube was heated from 130℃ to 450℃ under the pressur...
New moving target monitoring mode with Hybrid-TOPS of spaceborne SAR
WANG Yamin, CHEN Jie, YANG Wei, ZHAO Songtao
2016, 42(6): 1256-1262. doi: 10.13700/j.bh.1001-5965.2015.0420
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Conventional synthetic aperture radar (SAR) has the problems of limited targets' velocity boundary and low accuracy. To solve the problem, this paper introduces a new mode Hybrid-TOPS to detect moving target. Firstly, the SAR imaging mode was represented quantitatively through hybrid factor. Employi...
Experimental study on flight performance of dragonfly during climbing
GAO Qian, ZHENG Mengzong, LI Zhiping, LI Qiushi
2016, 42(6): 1271-1278. doi: 10.13700/j.bh.1001-5965.2015.0374
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The flight performances of insects in free flight are very important for the research of the bionic fluid mechanics. The movement law and dynamic characteristics of dragonfly Pantala flavescens during climbing flight in two different flying angles are investigated using high-speed videography. We in...
Path tracking for visual navigation based on H2/H∞
WU Chengliang, CAO Yunfeng, ZHUANG Likui, XIE Ye, DING Meng
2016, 42(6): 1279-1285. doi: 10.13700/j.bh.1001-5965.2015.0370
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Visual navigation system was physically divided into sensors (camera and laser rangefinder) and computer vision processing, so as to study the characteristics of visual navigation system theoretically. And then visual measurement model was established, which was based on the above computer vision pr...
Task planning for CE-3 rover's manipulator to probe in place based on SA* algorithm
ZHANG Tao, JU Hehua
2016, 42(6): 1286-1294. doi: 10.13700/j.bh.1001-5965.2015.0382
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This paper focuses on the shortage of past researches which do not satisfy the conditions that CE-3 lunar rover is required to satisfy the constraints of imaging, light detection, obstacle avoidance, and number of manipulator switching. A new approach based on SA* algorithm is presented for task pla...
Airship's longitudinal motion impact analysis based on coupling ballonet
YOU Yingjie, MI Panpan, LYU Mingyun, LIU Wending
2016, 42(6): 1303-1310. doi: 10.13700/j.bh.1001-5965.2015.0427
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Large high-altitude airship has a high volume ratio which even exceeds 90%, so it will induce significant impact on airship's motion because of the ballonets dynamics. Considering one large-scale airship whose cruise altitude is 6 000 m, ballonets dynamics based on the cylindrical container was esta...

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