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2015 Vol. 41, No. 7

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Volume 41 Issue72015
2015 Year 41 Volume 7 Issue E-journal
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Geometric approach for intercontinental formation flight path planning
XU Xiaohao, MENG Linghang, ZHAO Yifei
2015, 41(7): 1155-1164. doi: 10.13700/j.bh.1001-5965.2014.0515
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For intercontinental formation flight path planning problem, a basic model was developed based on the aerodynamic models and spherical metric characteristics of formation flight. The problem was then abstracted as the weighted geodesic Steiner minimum tree (WGSMT) problem in spherical point set due ...
Fire protection design in aircraft cabin based on fire evacuation safety index
ZHANG Qingsong, QI Hanpeng, LUO Xingna
2015, 41(7): 1165-1170. doi: 10.13700/j.bh.1001-5965.2014.0489
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In order to study the influence of aircraft cabin design on fire protection performance, a concept of fire evacuation safety index (FESI) was firstly presented. The fire scenario and evacuation procedures in aircraft cabin were simulated via simulation software PyroSim and Pathfinder. FESI at differ...
Accessory gearbox temperature field analysis considering fuel injection lubrication
CHEN Yunxia, LIU Wangjia
2015, 41(7): 1171-1176. doi: 10.13700/j.bh.1001-5965.2014.0533
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Accessory gearbox is a major component of aero-engine, and the heat production and heat dissipation problems of accessory gearbox are complex. Previous studies have focused only on solid domains thermal analysis, however oil cooling effect has not been taken full account of. Aiming to complement thi...
Spacecraft electrical characteristics identification method based on PCA feature extraction and WPSVM
LI Ke, LIU Yi, DU Shaoyi, SUN Yi, WANG Jun
2015, 41(7): 1177-1182. doi: 10.13700/j.bh.1001-5965.2014.0482
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To solve the problems of large amount of unlabeled test data, high dimension characteristics, slow computing speed and low recognition rate during the spacecraft electrical characteristics identification process of monitoring system, an on-line identification algorithm based on principal component a...
Path planning for UAV under three-dimensional real terrain in rescue mission
LIANG Xiao, WANG Honglun, MENG Guanglei, CHEN Xia
2015, 41(7): 1183-1187. doi: 10.13700/j.bh.1001-5965.2014.0479
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Basing on the capability of three-dimensional flight and planning of optimal path, unmanned aerial vehicles (UAVs) can reach the disaster areas within shorter time than ground vehicles, which will improve the efficiency of rescue. Firstly, according to the real geographical environment, terrain is m...
Rigid-flexible coupling multibody model for the tethered satellite system based on recursive dynamics algorithm
ZHONG Rui
2015, 41(7): 1188-1195. doi: 10.13700/j.bh.1001-5965.2014.0525
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A multibody dynamics model of hinged flexible rods was established for the spatial tethered satellite system (TSS) based on the recursive dynamics algorithm. The system was consisted of two rigid end-satellites and a flexible tether connecting them. In the model, the tether was discretized into a se...
Digital combined measuring technology assisted quality inspection for aircraft assembly
JING Xishuang, ZHANG Pengfei, WANG Zhijia, ZHAO Gang
2015, 41(7): 1196-1201. doi: 10.13700/j.bh.1001-5965.2014.0635
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Aimed at the issues, including that detail features of the large size aircraft panel components couldn't be achieved directly and the low measuring efficiency by using a laser tracker separately in large size aircraft panel shape measurement, a combined measurement method based on the laser tracker ...
Subgraph matching algorithm based on graduated nonconvexity and concavity procedure
LI Jing, LIU Chuankai, WANG Yong, GU Nannan, SHI Rui, LI Lin
2015, 41(7): 1202-1207. doi: 10.13700/j.bh.1001-5965.2014.0505
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To achieve robust and efficient matching with outliers is a fundamental problem in the field of graph matching. To tackle this problem, a novel subgraph matching algorithm was proposed, which was based on the recently proposed graduated nonconvexity and concavity procedure (GNCCP). Specifically spea...
Gust response analysis of flexible aircraft with aerodynamic nonlinearity
BI Ying, YANG Chao, WU Zhigang
2015, 41(7): 1208-1214. doi: 10.13700/j.bh.1001-5965.2014.0492
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Aiming at the gust response of high aspect ratio flexible aircraft, the unsteady aerodynamic considering the nonlinear effect at high angle of attack (AOA) was calculated in time domain by combining the modified Theodorsen method with the strip theory. Based on the nonlinear aerodynamic in time doma...
Acoustic numerical simulation of high frequency combustion instability
CHU Min, XU Xu
2015, 41(7): 1215-1222. doi: 10.13700/j.bh.1001-5965.2014.0527
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High frequency combustion instability is one of the major issues existed in design process of liquid rocket engine. A time domain numerical simulation was used to predict high frequency combustion instability of hypergolic propellant orbit maneuvering engine (OME) by computational aeroacoustics, whi...
Dynamic parameter estimation of pressure transducer in shock tube calibration test
LI Qiang, WANG Zhongyu, WANG Zhuoran, YAN Hu
2015, 41(7): 1223-1230. doi: 10.13700/j.bh.1001-5965.2014.0549
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Shock tube is the key device in the pressure transducer dynamic calibration. But as the output of pressure transducer often contains strong interference, which makes it difficult to directly use the output to build the dynamic model of calibrated pressure transducer, in addition, the accuracy of the...
Modeling and analysis of dynamic collision region for UAV avoiding aerial intruders
LIU Chang, WANG Honglun, YAO Peng, LEI Yupeng
2015, 41(7): 1231-1238. doi: 10.13700/j.bh.1001-5965.2014.0497
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In view of the existing methods to calculate collision region using certain threshold value of distance or time, an unmanned aerial vehicle (UAV) dynamic collision region model based on maneuver information of both UAV and aerial intruder was presented. Firstly, the no-maneuver collision region was ...
Propagation characteristics of Rayleigh wave under gravity based on FDTD method
LIU Ning, LI Min, SUN Jie
2015, 41(7): 1239-1245. doi: 10.13700/j.bh.1001-5965.2014.0503
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R wave is short for Rayleigh wave. R wave, on which the effect of gravity is generally inevitable, has received considerably extensive attention and been widely used in many fields, such as geological exploration, nondestructive test, etc. The effects of gravity on R wave velocity for elastic parame...
Parameter identification of magnetic bearing based on rotor unbalance responses
LIU Chao, LIU Gang
2015, 41(7): 1246-1252. doi: 10.13700/j.bh.1001-5965.2014.0516
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The force parameters of magnetic bearing obtained by theoretical design method were usually inaccurate. To solve this problem, an identification method based on rotor unbalance responses was proposed. Making the rotor rotate at high speed, the eccentric effect of the rotor imbalance can be used. The...
Experiment of air flow behavior and heat transfer characteristics in microchannels with different aspect ratios
LIU Yangpeng, XU Guoqiang, LI Haiwang, TIAN Yitu
2015, 41(7): 1253-1258. doi: 10.13700/j.bh.1001-5965.2014.0524
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Experiments were conducted to investigate the flow behavior and heat transfer characteristics in minichannels with different aspect ratios. The widths of microchannels are constant of 0.4mm. The aspect ratiosof the microchannels are 2/5, 1/2, 2/3 and 1, respectively. All tests were performed with ai...
Control method and applications of robust trajectory linearization via nonlinear differentiators
SHAO Xingling, WANG Honglun, ZHANG Huiping, ZHANG Xiaofeng
2015, 41(7): 1259-1268. doi: 10.13700/j.bh.1001-5965.2014.0544
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Considering the lack of enough robustness against uncertainties in conventional trajectory linearization control (TLC) method, an improved robust control method was proposed, based on the design principle of nonlinear differentiators. Firstly, via introducing the concept of second-order linear diffe...
Measurement method for thermal radiation characteristics of IR window materials
WANG Yahui, WANG Qiang, ZHANG Bochuan, XU Li
2015, 41(7): 1269-1274. doi: 10.13700/j.bh.1001-5965.2014.0553
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When a hypersonic vehicle is flying in the atmosphere, serious aero-thermo-radiation effects can reduce or even destroy the performance of infrared (IR) detection, and high-temperature IR window becomes the main factor of the effects due to the aerodynamic heating. Based on thermal radiation transfe...
Spacecraft test requirement description and automatic generation method
GAO Shiwei, LYU Jianghua, WUNIRI Qiqige, MENG Xiangxi, MA Shilong
2015, 41(7): 1275-1286. doi: 10.13700/j.bh.1001-5965.2014.0762
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Spacecraft as a typical safety-critical system, its trustworthiness study is very urgent. The evaluation and verification for spacecraft depends on the data obtained from the execution of spacecraft test cases. Moreover, spacecraft test requirement is the important basis for test case generation.In ...
Performance comparison of four pre-filters used to prevent pitch categoryⅡPIO
LU Yang, YU Liming, FU Yongling
2015, 41(7): 1287-1293. doi: 10.13700/j.bh.1001-5965.2014.0507
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Category Ⅱ PIO cases are mostly characterized by actuator saturation. FWB, DS, DASA, RLF are four nonlinear pre-filters that have already been used to compensate for the phase lag led by actuator saturation, thus to prevent pilot-induced oscillation (PIO). Different means were used to make compariso...
Effects of solution-aging treatment on microstructure and mechanical properties of a high-strength and high-toughness titanium alloy
XIA Xiaojie, WU Guoqing, HUANG Zheng, LI Zhiyan
2015, 41(7): 1294-1299. doi: 10.13700/j.bh.1001-5965.2014.0517
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Solution-aging treatment was performed to a high-strength and high-toughness titanium alloy. Several microstructural feature including volume fraction of primary α phase, size factor of primary α phase, volume fraction of secondary α phase, αs/β interface density, were quantitatively characterized. ...
NUIO based actuator fault detection for a UAV
ZHANG He, ZHONG Maiying
2015, 41(7): 1300-1306. doi: 10.13700/j.bh.1001-5965.2014.0522
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The actuator fault detection for an unmanned aerial vehicle (UAV) longitudinal system with unknown atmospheric disturbances and stochastic noise was studied. Based on introducing a nonlinear longitudinal model of the fixed UAV, a residual generation was designed by employing a nonlinear unknown inpu...
Probability model for early warning aircraft radar flight test based on probability of detection curve
WANG Han, MA Xiaobing, ZHAO Yu
2015, 41(7): 1307-1312. doi: 10.13700/j.bh.1001-5965.2014.0536
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A novel probability model was proposed to ensure the coverage rate and the accuracy of probability of detection (POD) curve in early warning aircraft radar flight test, which can also provide the distance sampling intervals and boundary conditions of flight routes. Firstly, we derived the optimal nu...
Effect of sweep angle on stability and transition in a swept-wing boundary layer
SUN Pengpeng, HUANG Zhangfeng
2015, 41(7): 1313-1321. doi: 10.13700/j.bh.1001-5965.2014.0540
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The stability and transition of swept-wing boundary layers have important reference value to the design and optimization of airfoil. The sweep angle is one of the key parameters to the cross-flow instability of swept-wing boundary layers. Based on the NACA0012 airfoil profile, the mean flow of a swe...
Influence of quantum dots and TiO2 photoanode parameters on electron lifetimes and performance of photonode
QUAN Linlin, LI Weiping, GENG Huifang, LIU Huicong, ZHU Liqun
2015, 41(7): 1322-1329. doi: 10.13700/j.bh.1001-5965.2014.0541
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Effects of film thickness of P25TiO2 photoanode, different types of quantum dots sensitized and method of quantum dots co-sensitization, which are the factors of interest, on P25TiO2 photoanode were analyzed. The relationship between P25TiO2 film thickness and electron lifetimes were investigated by...
3D light fields based foreground segmentation in static scenes
WEI Wei, LAO Songyang, KANG Lai, BAI Liang
2015, 41(7): 1330-1336. doi: 10.13700/j.bh.1001-5965.2014.0477
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To address the problem of extracting foreground objects from complex scenes, a 3D light field based method for foreground segmentation of static scenes was presented. Firstly, the method relies on densely sampled 3D light field formed by stacking a sequence of images captured at different viewpoints...
Image crosstalk correction method of the infrared multispectral camera
CHEN Huiwei, ZHAO Huijie, JIA Guorui
2015, 41(7): 1337-1342. doi: 10.13700/j.bh.1001-5965.2014.0486
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There are two bands in the wavelength of 1.55-2.35μm region for the infrared multispectral camera. Due to the detectors being located on the same focal plane assembly and the design of the readout circuits, one band was found to have crosstalk from other band. Firstly, the crosstalk phenomenon in th...
Algorithm of position-based dynamics and cutting simulation for soft tissue using tetrahedral mesh
BAI Junxuan, PAN Junjun, ZHAO Xin, HAO Aimin
2015, 41(7): 1343-1352. doi: 10.13700/j.bh.1001-5965.2014.0526
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In order to improve the realism and real-time performance of virtual surgery technique, a cutting algorithm for soft tissue using tetrahedral mesh and position-based dynamics was proposed. Firstly, the tetrahedral mesh was chosen as the geometrical model for soft tissue, and position-based dynamics ...
Lossless intra coding on whole frame for screen content video based on template matching
FENG Lixin, TAO Pin, WEN Jiangtao, YANG Shiqiang
2015, 41(7): 1353-1358. doi: 10.13700/j.bh.1001-5965.2014.0529
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The-state-of-art video compression standards, such as H.264 and high efficiency video coding (HEVC) are mainly designed towards the camera-captured video. However, screen content (SC) video is created by the computer without noise, which needs higher efficiency than the camera-captured video. SC pic...

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