2012 16th International

Symposium on ElectromagneticLaunch Technology

(EML 2012)

Beijing, China

15-19 May 2012

«Heee IEEE Catalog Number: CFP12EML-PRT

ISBN: 978-1-4673-0306-4

LIST OF PAPERS

2012 16th EML Introduction

EML Committees

2012 Peter Mark Award

2012 Peter Kemmey Memorial Student Scholarship2012 Harry Fair Award

Tribute to Dr. Richard A. Marshall

APPLICATIONS

Study on the Compilation of Firing Tables for Electromagnetic Launching Interception 1

System Shizhong Li, Jun Li, Peizhu Liu, Qingxia Zhang, Ning Su, and Ronggang Cao

Multi-field Coupled Analysis ofthe Launch Coil in Active EM Armor 4

, Chenqxue Wang, Yongfang Huang, Yanjie Cao, and Shizhong Li

Research on Collision Effects of the Interception Projectile against the Attacking Object in 10Active EM Armor Chengxue Wang, LuqiangXue, Xuefeng Sun, and Liangming Zhu

Study on damage effect and threshold of high energy 1.06|im-wavelength long-pulse laser 15to photo detector Lei Tang, Jianhua Wang, Jun Li, and Qun Hao

Impact analysis of the beam auto precision guided detection based on the cat-eye effect 20

Lei Tang, Jianhua Wang, Qun Hao, and Jun Li

Can Electromagnetic Augmentation Reduce Space Launch Costs? Ian R. McNab 26

COILGUN

Simulation Analysis on Stress Field in Induction Coil Launcher 34

Xiao-cun Guan, Bin Lei, and Zhi-yuan Li

The Feasibility Study of High-velocity Multi-stage Induction 39

Zizhou Su, Wei Guo, Bo Zhang, Mingtao Li, Cuihua Zhang, andJunhai Li

Parameter Optimization of Multi-stage Coilgun Using Orthogonal Test Approach 43

Yujiao Zhang, Kaipei Liu, Junpeng Liao, Yadong Zhang, Chunlong Wu, and Yuanchao Hu

Research on the Control Strategy of Multistage Synchronous Inductive Coil 49

Hongjun Xiang, Zhi-yuan Li, andJian-sheng Yuan

Simulation Analysis on Temperature Field in Induction 53

San-qun Li, Xiao-cun Guan, Bin Lei, and Zhi-yuan Li

Driving Circuit Research of a Coil Launcher 58

Yadong Zhang, Jiangjun Ruan, Yuanchao Hu, and Kaipei Liu

Electromagnetic Force Analysis of a Driving Coil 63

Yadong Zhang, Jiangjun Ruan, and Ting Zhan

Finite Element Modeling of Eddy Current and Force Distribution for Induction Dampers 69

Weimin Cuan, Yonghe Li, Kejie Dai, Jiangjun Ruan, Ying Wang, Zhiye Du, Yadong Zhang and Hailong Zhang

Design and Experiment of Reluctance Electromagnetic Launcher with New Style Armature 74

Hongjun Xiang, Bin Lei, Zhi-yuan Li, and Keyi Zhao

Analysis of Launch Mechanism for Coaxial Induction Coil Launcher Based on Armature's 78

EMF KeyiZhao, Zhi-yuan Li, Bin Lei, Hongjun Xiang, and Qian Zhang

Analysis of Performance of a Coil Launcher Based on Improved CFM and Non-Overlapping 83

Mortar FEM

Zhiye Du, Shoubao Liu, Jiangjun Ruan, Yadong Zhang, Dong Wang, Guodong Huang, and Caibo Liao

Research on Electromagnetic Performance Affected by Shielding Enclosure of a Coil 89

Launcher zhiye Du,

Jiangjun Ruan, Ting Zhan, Yao Yao, Yadong Zhang, Kaipei Liu, Daochun Huang, Weimin Guan, and Guodong Huang

A Simple System for Measuring Racetrack-shaped Pancake Coil Electromagnetic Launcher 95

Velocity with Multi-layer Aluminum Foils Target zhi-yuan Li, chun-bng Guo, and Ben Lei

Experimental Results from a 4-Stage Synchronous Induction Coilgun 99

Tao Zhang, Wei Guo, Zhiqiang Dong, Yanhui Chen, Mingtao Li, andXiaochao Sun

Design and Testing of a 15-Stage Synchronous Induction Coilgun 104

Tao Zhang, Wei Guo, Honghai Zhang, Bin Cao, Kai Huang, and Ren Ren

Coupled-Field Analysis of a New Hybrid Electromagnetic Coil Launcher 108

Xuehui Chen, Min Wang, Jie Wu, andZhao Wang

Efficiency Comparison between Synchronous Induction Launcher and Reconnection 113

Launcher HongboJin, Huijin Wang, Liping Zhang, and Luqiang Xue

Parameters Optimization of Synchronous Induction Launcher Based on Uniform Design 117

Method Yanjie Cao, HongboJin, Huijin Wang, and Dawei Yang

Research on the Scaling Model of Electromagnetic Coil Launcher 121

BenguiZou, Ruifeng Li, Xuehui Chen, and Yanjie Cao

Optimum Structural Designs of Pivotal Assemblies in Synchronous Induction Coil 127

Launchers Wenbiao Liu, Yuan Zhang, Ruifeng Li, and Yingzheng He

Research on Soft Trigger Control System of Synchronous Induction 131

Min Wang, Yanjie Cao, Chenghai Lu, and Liping Zhang

Analyzing and Modeling of Dynamic magnetic suspension plate in the Electromagnetic 136

Launcher Hexiang Liu, Haitao Yu, Minqiang Hu, Li Yu, and Lei Huang

Transient Simulation of Shielding Helical Coilgun .,142

Zhenxiang Liu, Dong Yang, Li-jia Yang, ZhiShen, Jian-ming Ouyang, and Ya-qin Jiang

Validation of a Coilgun Design Code 147

Yong He, Guishan Gao, Shengyi Song, Yongchao Guan, Yexun Li, Xu Qiu, Cheng Cheng, and Wenfeng Dai

Design and Realization of A Novel Helical Coil Electromagnetic Launcher 151

Dong Yang, Zhenxiang Liu, Li-jia Yang, Zhi Shen, Jian-ming Ouyang, and Ya-qin Jiang

Back Voltage Analysis in the launching process of Coil Electromagnetic Launcher 156

Yanpan Hou, Zhenxiang Liu, Jian-ming Ouyang, and Dong Yang

Parameter Settings of the Projectile of the Coil Electromagnetic Launcher 159

Yanpan Hau, Zhenxiang Liu, Jian-ming Ouyang, and Dong Yang

COMPUTATIONALTECHNIQUES

Application of Natural element method in electromagnetic launch Problem 163

Bin Lei, Xiao-cun Guan, and Zhi-yuan Li

Acceleration of Electromagnetic Launchers Modeling by Using Graphic Processing Units 167

Antonino Musolino, Rocco Rizzo, Michele Toni, and Ernesto Tripodi

Method of Detecting and Diagnosing Faults in Large Power Systems 173

Xiaopeng Cui, Gongbao Wang, Xinhua Xu, and Mingzhong Ma

ELECTROTHERMAL-CHEMICAL

Energy Skin Effect of Propellant Particles in Electrothermal-Chemical Launcher 178

Yong Jin and Booming Li

Experimental Design of 25 mm Integrated Simulator for Small Scale Plasma-Propellant 183

Charge Matching Test Zhenggang Xiao, Sanjiu Ying, Weidong He, and Fuming Xu

Resonant Deformation of Barrel in Plasma - Dynamic Launchers 189

Alexandr V. Kozlov, Vladimir P. Polistchook, Alexey V. Shurupov, and Nina P. Shurupova

EMALS

RAIL_TYPE EMAL SYSTEM Richard A. Marshall andJiange Zhang 195

Analysis of Temperature Distribution in Switched Reluctance Linear Launcher 197

H. Chen, S. Lv, Q. Wang, and Herbert Ho-Ching Lu

Modeling, Simulation and Experiment of Switched Reluctance Linear Launcher 203

H. Chen, Q. Wang, and Jason J. Gu

Acceleration Closed-loop Control on Switched Reluctance Linear Launcher 209

H. Chen, Q. Wang, and Herbert Ho-Ching Lu

The Thermal Characteristics Investigation of Transverse Flux Tubular Linear Machine for 215

Electromagnetic Launcher MeiZhao, Ji-bin Zou, Yong-xiang Xu, and Wei-yan Liang

Study on a Long Primary Flux-switching Permanent Magnet Linear Motor for 220

Electromagnetic Launch Systems Lei Huang, Haitai Yu, Minqiang Hu, and Hexiang Liu

The Torque Ripple and Minimization in Multi-unit Permanent Magnet Synchronous Motor 226

for Electromagnetic Thruster Ji-bin Zou, Bo Zhao, Yong-xiang Xu, and MeiZhao

Proposal of the Sensorless Control Method of Long Primary Segmented PMLSM Applied in 232

Electromagnetic Catapult Liyi Li, He Zhu, Mingna Ma, and Qingquan Chen

Research on a Large Thrust Force Permanent Magnet Synchronous Linear Motor Used in 238

Space Electromagnetic Launcher Chunyan Li, Baoquan Kou, andShukang Cheng

Analysis and simulation on commutation force ripple of BLDCLM based on velocity 242

Gang Wang, Xiaomin Li, KeyiZhao, Zhi-yuan Li, and Huilai Li

Research on Slide-contact Type Linear Electromagnetic Catapult 247

KeyiZhao, Zhi-yuan Li, Bin Lei, Xiaomin Li, Huilai Li, and Gang Wang

Enhancement of Thrust Force of a Tubular Electromagnetic Launcher with Transverse Flux 251

Configuration by Leakage Flux SuppressionQian Wang, Jibin Zou, Yongxiang Xu, Juan Zhang, and MeiZhao

Implementation of Monte Carlo Method to an Electromagnetic Launcher Simulator 257

,Nevsan Sengil

The Electromagnetic Propeller Based on a Five-Phase Fault-Tolerant Permanent-Magnet 262

Machine Ping Zheng, YiSui, Fan Wu, Pengfei Wang, Haipeng Wang, and Yu Lei

Influence of Longitudinal End Effects on Electromagnetic Performance of an Permanent 268

Magnet Slotless Linear Launcher Mingna Ma, Liyi Li, Zhu He, and c c. Chan

Design, Simulation and Testing of Multi-segmented Plate Permanent Magnet Linear 274

Launcher Liyi Li, Mingna Ma, Zhu He, and C.CChan

Investigation of Interior Axially Magnetized Permanent Magnet Tubular Linear Machine 279

Used for Electromagnetic Launcher

Jing Zhao, Zhen Chen, Xiangdong Liu, Ping Zheng, Hengzai Hu, and Yi Sui

Comparison of two current predictive control methods for a segment winding permanent 284

magnet linear synchronous motor Junjie Hong, Liyi Li, Donghua Pan, andZhijian Zong

Experimental Performance Investigation of a Novel Magnetic Levitation System 291

Ugur Hasirci, Abdulkadir Balikci, Zivan Zabar, and Leo Birenhaum

A Position Error Compensation way for Sensorless Linear Motor drive Using High 297

Frequency Injection JiaxiLiu, Mingna Ma, and Liyi Li

Research of Temperature Estimate of the High Over-load Tubular Linear Motor 303

Liyi Li, Xuzhen Huang, and Baoquan Kou

Air Flow of the Linear Motor for Electromagnetic Launch System 308

Liyi Li, Xuzhen Huang, and Baoquan Kou

Analysis and Optimization of Ironless Permanent Magnet Linear Motor for Improving 313Thrust Liyi Li, Donghua Pan, and Xuzhen Huang

Design and Analysis of Ironless linear electromagnetic launcher with High Thrust Density 317

for Space Platform Liyi Li, Yongbin Tang, Baoquan Kou, and Mingna Ma

Research on a Permanent Magnet Synchronous Motor with Parted Permanent Magnet Used 323

for Spindle Chunyan Li and Baoquan Kou

Analysis and Design Criteria of a Tubular Linear Induction Motor for a Possible Use in the 327

Electro-Magnetic Aircraft Launch System Antonino Musolino, Rocco Rizzo, and Ernesto Tripodi

Analytical Model of a Travelling Wave Multipole Field Electromagnetic Launcher 333

Antonino Musolino, Rocco Rizzo, and Ernesto Tripodi

Research on Electromagnetic Force of a Large Thrust Force Permanent Magnet 339

Synchronous Linear Motor chunyan Li and Baoquan Kou

KEYNOTE

The development of EML technology in China Jun Li, Rong-gang Cao, andshizhong Li 343

POWER CONDITIONING

Optimal Design of the Rotor of Air-Core Compulsator Shaopeng Wu, Shumei Cui, and Liwei Song 348

Modeling and Design of an Integrated Winding Synchronous Permanent Magnet Planar 348

Motor Lu Zhang, Baoquan Kou, Liyi Li, and Binchao Zhao

Analysis for Temperature Field and Thermal Stress of the Pulsed Inductor 359

Jia Liu, Jiannian Dong, Jun Zhang, and Yan-li Cui

Design and Simulation of an Active Compensated Pulsed Alternator (ACPA] for the 364

flashlamp load Pei Yuan, Kexun Yu, and Caiyong Ye

Inductance Mathematic Model of Homopolar Inductor Alternator in a Novel Pulse Capacitor 370

Charge Power Supply Qingming Xin, Kexun Yu, Zhang-ao Ren, Zhenxiu Lou, and Caiyong Ye

Simulation of Electromagnetic Force Between Pulsed Inductor and Internal Structure of 376

Power Supply Module Xiaohua Yu, Jiannian Dong, Jun Zhang, and Yan-li Cui

Comparison between Self-excitation and Pulse-excitation in Air-core Pulsed Alternator 381

System Caiyong Ye, Kexun Yu, Pei Yuan, Qingming Xin, andJianbo Sun

Investigation of Multiphase Compulsator Systems Using a Co-Simulation Method of FEM- 385

Circuit Analysis Shumei Cui, Weiduo Zhao, Shaofei Wang, and Tiecheng Wang

Sensitivity Analysis and Regulation Strategy of Current Waveform for Two-Axis 391

Compensated Compulsators Weiduo Zhao, Dansong Cheng, Qing Liu, and Shumei Cui

Estimation Model of Switching Delay for Gas-insulated Trigatron Switches 397

Li Lee, Li Cai, Chaobin Bao, Xiangdong Qi, and Fuchang Lin

Development of a Long-lifetime Spark Gap Switch and Its Trigger Generator for 2.0 MJ 402

Capacitive Pulsed Power Supply Module

Li Lee, Chaobin Bao, Xibo Feng, Xiangdong Qi, and Fuchang Lin

Frequency Characteristic of Resonance- Based Wireless Energy Transfer 408

Shitong Mao, Rengui Lu, Conghao Su, and Chunbo Zhu

Efficiency Optimal Control of Switched Reluctance Machine over Wide Speed Range 414

Applied to Flywheel Energy Storage System Jianbo Sun, Zhe Kuang, Shuanghong Wang, and Yi Chen

The Improved Study of Thermal Dependence Equivalent Circuit Model for Supercapacitor 420

Kai Liu, Chunbo Zhu, Rengui Lu, and C.C Chan

Influence of Orifice Distribution on the Characteristics of Elastic Ring Squeeze Film 425

Dampers for Flywheel Energy Storage System ... Yong-xiang Xu, Xiao Chen, Ji-binZou, and Wenjuan Qi

Optimization Design and Research of a Hybrid Excitation Compulsator 431

Shaopeng Wu, Dansong Cheng, and Shumei Cui

Refurbishment of a 30 MJ Pulsed Power Supply for Pulsed Power Applications 435

O. Liebfried, V. Brommer, S. Scharnholz, and E. Spahn

Numerical Analysis and Design Optimization of a Homopolar Inductor Machine Used for 441

Flywheel Energy Storage Qian Wang, Ji-bin Zou, Juan Zhang, Chengjun Liu, Xinghe Fu, and MeiZhao

Structural Optimization of High Speed Permanent Magnet Synchronous Motor for Flywheel 446

Energy Storage Baoquan Kou, Haichuan Cao, Da Zhang, Weili Li, and Xiaochen Zhang

Research on Loss of High Speed Permanent Magnet Synchronous Motor for Flywheel 453

Energy Storage Baoquan Kou, Haichuan Cao, Da Zhang, Weili Li, and Xiaochen Zhang

The Design of a DSP-based PFN Trigger Timing Control System and the Experimental Study 459

Fucai Liu, Xiaojuan Zhao, andSuochun He

Design and Optimization of the Pulsed Power Supply System Used for Electromagnetic 465

railgun juLan

Study on Energy Conversion Efficiency of Electromagnetic Launcher with A Capacitor- 469based Pulsed Power System Peizhu Liu, Xinjie Yu, Jun Li, andshizhong Li

Effect of sequence discharge on components in a 600kJ PPS Used for Electromagnetic 473

Launch System Ling Dai, Yanzhao Wang, Qin Zhang, Wenting Li, Wanxin Lu, Hanbin Dong, and Fuchang Lin

Research on Time delay and Lifetime Characteristics of Triggered Vacuum Switch with 479

Multi-rod System Yanzhao Wang, Ling Dai, Zhengyang Zhou and Fuchang Lin

Research on a Miniaturized Pulsed Inductor Applied in PPS 485

Ling Dai, Cheng Su, Fuchang Lin, Qin Zhang, Hanbin Dong, and Xiangyu Shi

Lifetime Prediction Models of Pulsed Capacitor Based on Capacitance Loss 491

Zhiwei Li, Hua Li, Fuchang Lin, Yaohong Chen, Fei Lv, Miao Zhang, and De Liu

Electromagnetic modelling of high pressure spark gap peaking switch 498

Mrunal G Parekh, S. Bindu, and H. A. Mangalvedekar

Numerical Study of Partitions Effects on Magneto-Convection inside an Enclosure 503

M. Pirmohammadi, M. Ghassemi, G. A. Sheikhzadeh, and M. Hamedi

Elevated Rate Cycling of High Power Electrochemical Energy Storage Devices for Use as the 508

Prime Power Source of an EM Launcher David A. Wetz, Biju shrestha, and Peter m. Novak

Ultra-High Thermal Conductivity of Three-Dimensional Flat-Plate Oscillating Heat Pipes for 514

Electromagnetic Launcher CoolingScott M. Thompson, Bradley S. Tessler, Hongbin Ma, Douglas E. Smith, and Annette Sobel

Study on Thyristor Triggering Scheme for Large-capacity Intermittent Rectifier System 519

Qiang Gao, An Hu, Weiming Ma, Na He, and Liang Zhou

Study on Thyristor Control and Diagnosis System for Pulsed-power Application 525

Qiang Gao, An Hu, Weiming Ma, Na He, and Liang Zhou

X-band Tunable Relativistic BWO with Linearly Polarized Gaussian Radiation 531

Ahmed Elfrgani, Sarita Prasad, Mikhail Fuks, and Edl Schamiloglu

Comparisons of Three Inductive Pulse Power Supplies Xinjie Yu andXiangxiang Chu 536

STRETCH Meat Grinder with ICCOS Xinjie Yu and Xiangxiang Chu 541

Delay Characteristics of Triggered Vacuum Switch and Air Spark Gap for Pulsed Power 546

Applications Xiongying Duan, Zhihui Huang, Minfu Liao, Jiyan Zou, and Chun Zhao

Characteristics of Triggered Vacuum Switch with Single Axial Magnetic Electrode for High 552

Frequency Current Interruption Lu Pu, Xiaalong Cao, Xiongying Duan, Xian Cheng, and Minfu Liao

Research on Pulse Power Charge System of Railgun based on TMS320LF28335 Control 557

Chip Xiaofei Wang, XiZhao, Dapeng Wang, and Mingfang Sun

PROJECTILES

Projectile Geometry M. SajjadBayati 559

Flight Test Results of Investigation of Acceleration Effects on a Gun Launched Rocket 564

Engine D. Lancelle, O. Bozic, and H. Koke

Study on Wireless Energy and Data Transmission for Long-range Projectile 570

Chunlai Yu, Rengui Lu, Conghao Su, and Chunbo Zhu

PULSE COMPUTATION

Electromagnetic Shielding for Electromagnetic Launch 576

Yanpan Hou, Zhenxiang Liujian-ming Ouyang, and Dong Yang

RAILGUN

Numerical Analyzing the Electromagnetic Launcher Using FEM-3D in Time Domain 579

M. Sajjad Bayati, Asghar Keshtkar, and Leila Gharib

Analyzing the Current Distribution, Magnetic Field and Inductance Gradient at the Circular 584

Rail on Comparison to Rectangular Rail M. Sajjad Bayati, Asghar Keshtkar, and s. v. Al-Din Makki

Magnetic Field and Inductance Gradient at the Circular Railgun 589

M. Sajjad Bayati, Asghar Keshtkar, and S. V. Al-Din Makki

Research on Interior Ballistic Mechanics of Electromagnetic Railgun 593

Huteng Kong, LuchengJi, Weiqun Yuan, and Ping Yan

The Study of the Simple Breech-fed Railgun Recoil Force 599

Zizhou Su, Wei Guo, Bin Cao, Yanhui Chen, Kai Huang, and Xia Ge

A Novel Sensor for Projectile Detection in a Multishot Railgun 603

Christian Schuppler, Farid Alouahabi, and Markus Schneider

Electromechanical Aspects of Reliable Loading Procedures for Multishot Railguns 608

Christian Schuppler, Farid Alouahabi, and Markus Schneider

The Study of Three Configurations of Railgun 614

Zizhou Su, Wei Guo, Bo Zhang, Tao Zhang, Ren Ren, and Xiaochao Sun

Simulation of Launching Several Projectile by a Multi-Turn Railgun by 3D-FEM 618

Asghar Keshtkar, Leila Gharib, and M. Sajjad Bayati

Analyzing the Electromagnetic Launcher with Combination Both FEM-3D and IEM Methods 623

in Time Domain M. Sajjad Bayati, Asghar Keshtkar, Farshad Khosravi, and Ahmad Keshtkar

Analyzing the Far Field in Railgun Using Finite Difference Method 630

M. Sajjad Bayati, Asghar Keshtkar, and Leila Gharib

Analyzing the Near and Far Field Using Finite Element Method 634

M. Sajjad Bayati, Asghar Keshtkar, and HanifKazerooni

Simulation and Research on 3D Gouging Model Based on Abaqus/Explicit 639

Long-wen Jin, Qian Zhang, Bin Lei, and Zhi-yuan Li

Comparison between conventional railgun and Two-Turn railgun by 3D- FEM 644

Asghar Keshtkar, Leila Gharib, and Mohammadhosain Abbasi

A Practical Electromagnetic Launcher Concept-Part I: Primary Structure Design and 649

Armature Optimal Simulation

Qing-ao Lv, Zhi-yuan Li, Shi-shan Xie, Qian Zhang, KeyiZhao, and Hong-jun Xiang

Design and Simulation of A Large Muzzle Kinetic Energy Railgun 654

Zizhou Su, Wei Guo, Zhiqiang Dong, Junyi Yang, Honghai Zhang, and Wen Zhou

Comparison of Salvo Performance between Stacked and Paralleled Double-projectile 658

Railgun Yujiao Zhang, Kaipei Liu, Junpeng Liao, Ying Wang, and Chunlong Wu

Multi-factor Optimization of Railgun Using Orthogonal Test Approach and Field-Circuit 663

Method Yujiao Zhang, Kaipei Liu, Junpeng Liao, Yadong Zhang, and Chunlong Wu

Salvo Performance Analysis of Triple-projectile Railgun 668

Yujiao Zhang, Kaipei Liu, Junpeng Liao, Ying Wang, Chunlong Wu, and Tao Huang

Simulation Analysis on Interface Thermal Characteristic between Rail and Armature for 673

Electromagnetic Railgun He Li, Bin Lei, Qing-ao Lv, Zhi-yuan Li, Qian Zhang, and Ren-guiZhu

Using the hexagonal segmented railgun in multishot mode with 3 projectiles 678

6. Vincent and S. Hundertmark

Effects of Different Chopping Modes on the Thrust Ripple of Electromagnetic Launchers 683

Xiaopeng Li, Ku Tian, and Yi Fang

Effect of Geometry Change on the Deformation in C-Shaped Armatures through 3-D 687

Magnetic-Structural Coupling Finite-Element AnalysisTao Huang, Jiangjun Ruan, Yujiao Zhang, Yadong Zhang, Junpeng Liao, and Yuancao Hu

Finite Element Simulation on Current Distribution Feature of Different Rail- Armature 692

Structures for Rail Launchers under Static Conditions

Qing-ao Lv, Shi-shanXie, Chun-long Guo, He Li, and Zhi-yuan Li

Effect of Geometry Change on Solid C Shaped Armature 697

Yadong Zhang, Jiangjun Ruan, Junpeng Liao, and Kaipei Liu

Nonlinear Scaling Study of a Railgun 702

Yadong Zhang, Jiangjun Ruan, Junpeng Liao, Yuanchao Hu, and Kaipei Liu

Research of the Resistance Model in Solid Armature Railgun 707

Yuanchao Hu, Jiangjun Ruan, Junpeng Liao, Yadong Zhang, and Tao Huang

Payload Acceleration using a 10 MJ DES Railgun 713

S. Hundertmark, Markus Schneider, and G. Vincent

Transient 3-d Simulation of an Experimental Railgun using Finite Element Methods 718

S. Hundertmark and M. Roch

Study on the Curve Shape of C-Shaped Armature's Trailing Arms in Rectangular Bore 723

Railgun Deng Feng, Junjia He, Lixue Chen, Shengguo Xia, Zheng Xiao, Jun Li, and Ping Yan

Simulations on Arc Surfaced C-Shaped Armatures for Round-Like Bore Railguns 728

Deng Feng, Junjia He, Lixue Chen, Shengguo Xia, Zheng Xiao, Liangiiang Tang, Jun Li, and Ping Yan

Effects of contact pressure concentrations in rail/armature surface at startup of a railgun 734

launch Shengguo Xia, Lixue Chen, ZhengXiao, Junjia He, Yuan Pan, and Jun Li

Calculation of the Shrinking Contact Resistance by Truncated Cone Model to Simulate the 739

Contact of Armature and Rails Zejun Shen, Peng Zuo, andJian-sheng Yuan

Measure variation of magnetic field waveforms above the rails of rail-gun during the 744

launching period Rong-gang Cao, Jun Li, Qing-jie Jiao, and Jian-sheng Yuan

Analysis and measure the transient currents of rail-gun with loop probes 748

Rong-gang Cao, Jun Li, Qing-jie Jiao, and Jian-sheng Yuan

Experimental Tests of a 25mm Square-bore Railgun 753

Young-hyun Lee, Seong-ho Kim, Byung-ha Lee, Sanghyuk An, and Kyung-seung Yang

Simulation Research of CPA Powered Railgun System Shumei Cui, Qing Liu, and Weiduo Zhao 759

Characteristics of the Current Distribution in Rails and Armature with Different Section 763

Shape Rails Peng Zuo, Jun Li, Xiangqian Song, andJian-sheng Yuan

Study on Mechanical Character of Armature and Rail with Non-rectangular Cross Section in 769

EML Jianxin Nie, Ming Ren, Xiaoping Kang, Qing-jie Jiao, and Jun Li

Launch Process of Augmented Electromagnetic Railgun under Nonideal Condition 774

Zhenchun Wang, Suochun He, Yintang Wen, Zaiji Zhan, and Fucai Liu

Some Key Parameters for Rectangular Caliber Railgun System 778

Lixue Chen, Junjia He, Shengguo Xia, Zheng Xiao, and Deng Feng

Study on Tail Structural Parameters of Monolithic C-type Armature Based on Analysis of 783

Mechanical Pre-contact Pressure in Non-equal-crosssection Cantilever Model

Lixue Chen, Junjia He, Shengguo Xia, Zheng Xiao, and Deng Feng

Influence of Rail Resistivity and Rail Height on Armature Edge Erosion at Current Ramp-up 788

Lixue Chen, Junjia He, Shengguo Xia, Zheng Xiao, and Deng Feng

Simulation and Test Research of Copper-Aluminum Sliding Pair Dynamic Contact 792

Performance Qingxia Zhang, Jun Li, Rong-gang Cao, Peizhu Liu, and Shizhong Li

Experimental and Numerical Investigations of Vibrations at a Railgun with Discrete 796

Supports Christian Schuppler, Liudas Tumonis, Rimantas Kacianauskas, and Markus Schneider

Actively Controlling the Muzzle Velocity of a Railgun 803

Thorbjorn Siaenen, Markus Schneider, Peter Zacharias, and Markus J. Loffler

An analytical formulation of the Copper load solid to plasma transition problem when 809

driven by a pulse forming network

Karthik Sheshadri, Manas M N, Shruti Raj, Narasimhaiah Ramesh, and TSSheshadri

Validation and Optimization of Modular Railgun Model 815

Yuwei Hu, Ping Ma, Ming Yang, and Zicai Wang

System-Level Simulation Approach and Platform for Electromagnetic Railgun System 821

Ping Ma, Yuwei Hu, Ming Yang, and Zicai Wang

Velocity-Induced Current Profiles Inside the Rails of an Electric Launcher 826

,O. Liebfried, Markus Schneider, T. Stankevic, S. Balevicius, and N. Zurauskiene

Diagnostic Capabilities for Electromagnetic Railguns 832

, Ryan B. Hoffman, Terence L. Haran, and Sarah E. Lane

EM Gun Bore Life Experiments at the Naval Research Laboratory 838

Ft. A. Meger, R. Cairns, S. Douglass, B. Huhman, J. Neri, H. Jones, K. Cooper,

J. Feng, T. Brintlinger, J. Sprague, J. Michopoulos, M. Young, V. DeCiorgi, A. Leung, J. Baucom, and S. Wimmer

NRL Materials Testing Facility 844

R. A. Meger, B. Huhman, J. Neri, TBrintlinger, H.Jones, R. Cairns, S. Douglass, T. Lockner, and J. Sprague

A Survey of Railgun Research at the Georgia Institute of Technology (USA] 848

Scott Bah, Richard Cowan, Greg Kennedy, Richard Neu, MattSiopis, Jeffrey Streator, and Naresh Thadhani

Railgun System with Pulse-Dynamic Biasing of the Muzzle 854

Oleksandr V. Stolarchuk and Volodimir I. Chumakov

ANALYSIS OF THE ADVANTAGES AND DISADVANTAGES OF MULTI-TURN RAILGUN 859

Jiange Zhang, James E. Thompson, Zan Lu, and Naz E. Islam

Calculation on Optimal Initial Position of Armature Based on Ansoft 864

Gang Gu, Youdong Wu, Lizhou Wu, and Lie Tao

Effect ofthe Magnetic Material on Railgun's Electromagnetic Field 867

XiZhao, Lizhou Wu,Jiange Zhang, and Yang Xiang

Optimization Design for Rail Structure of Railgun 871

Lie Tao, Gang Gu, XiZhaoJiange Zhang, and ChenfangXu

Research on the Sliding Electrical Contact of the High Fire Frequency Launcher 876

Weidong Xu, Weiqun Yuan, YaohongSun, Ping Yan,Jun Li, and RongXu

Three-dimensional Simulation of the Electromagnetic Railgun Range 881

, Feng Jin, Xiao-fei Lu, and Yan-qiao Chen