Dynamic research of multi-stage reluctance coil gun

Li, Zhiyuan; Youtian, Luo; Meng, Xueping; Xiang, Hongjun; Cui, Shumei

doi:10.1109/eml.2014.6920187

Cited by 9 publications

(2 citation statements)

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“…The operation principle of the REML depends on the reluctance theory. The magnetic field induced on the coils attracts and pulls the ferromagnetic projectile towards the center of the coil [14][15][16]. REML have many advantages such as easy control, simple structure and high reliability when compared with other launchers [17].…”

Section: Introductionmentioning

confidence: 99%

3 Boyutlu Sonlu Elemanlar Analizi Kullanılarak Farklı Mermi Geometrilerinin Relüktans Fırlatıcının Performansına Etkisinin İncelenmesi

Sari

Dalbadan

2019

Cumhuriyet Science Journal

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In this paper, the 3D model of a reluctance electromagnetic launcher was implemented using Maxwell program. The effect of the different projectile geometries was examined via the model. The projectile geometry with the highest velocity was determined. After constructing 3D model of the launcher, projectiles with different geometries were built and finally various projectiles with different geometries were analyzed. As a result, it was determined that the tubular projectile with 4 mm radius hole was the fastest among the tubular projectiles. Among the projectiles with notches, the projectile with 4 notches was launched faster than the others when the parameter was the number of notches, and the projectile with 0.5 mm notch radius was faster than the others when the parameter was the notch radius. In this paper, the highest velocity was reached the tubular projectile with 4 mm radius that was built with the 1050 material. The value of this velocity was 24.12 m/s.

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Section: Introductionmentioning

confidence: 99%

3 Boyutlu Sonlu Elemanlar Analizi Kullanılarak Farklı Mermi Geometrilerinin Relüktans Fırlatıcının Performansına Etkisinin İncelenmesi

Sari

Dalbadan

2019

Cumhuriyet Science Journal

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“…No heat is generated between projectile and stator coils Keyword -Electromagnetic Launcher, muzzle velocity, Lorentz force I. INTRODUCTION Electromagnetic Launching system is used in defence mainly for launching high-velocity missiles [1]. US Navy recently developed a 33MJ prototype which can attain a speed of MACH 7 (1 Mach= 340.3 m\s), generally atomic Blitzer rail gun [2].…”

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confidence: 99%

Design and Simulation of an Electromagnetic Launcher for Ordnance Applications

Dayi¹,

Vijayan²

2017

IJET

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Abstract-This paper presents a model of electromagnetic coil gun launcher with simulation studies and experimental model validating the proposed strategy. Military research organisations are recently developing electromagnetic rail gun launcher for long range weapons that launch projectile electrically instead of chemical propellants at a speed exceeding Mach 7. Even though Rail gun launchers are used for long range weapons, it suffers from barrel wear down after a dozen of shell firing and weapon heat generated degrading the performance. It requires non-flammable liquid gas like nitrogen for reducing the heat generated at the rail barrel. Instead of rail guns, coil guns are more safe and accurate for high velocity military weapons. Coil gun projectile have no direct contact with the high voltage coil and the projectile is passing through the barrel axis avoiding friction causing wear down. No heat is generated between projectile and stator coils Keyword -Electromagnetic Launcher, muzzle velocity, Lorentz force I. INTRODUCTION Electromagnetic Launching system is used in defence mainly for launching high-velocity missiles [1]. US Navy recently developed a 33MJ prototype which can attain a speed of MACH 7 (1 Mach= 340.3 m\s), generally atomic Blitzer rail gun [2]. According to present status, the system is capable of reaching more than 100 nautical miles (1nm = 1.852 m\s) in several minutes. Since rail guns are simple in construction, their thermal management is highly complex, and it needs plasma discharge losses. Large installation cost, high-grade thermal insulation are some of the other requirements for the rail gun type electromagnetic launcher. Thus trying to concentrate on Electromagnetic Launcher (EML), where actuator force is given by coil (or solenoid) is considered as the research topic.Finite Element Analysis (FEA) models provide a platform for estimation and analysis of the magnetic force associated with a coil [3]. Electromagnetic launch pads find their application even in weather forecasting [4].When a current flowing through a winding produces a magnetic field, the magnetic field will exert a force (Lorentz force) given by the right-hand rule [5]. The muzzle velocity attained by the projectile used in an electromagnetic launcher is dependent on the charging voltage of the storage device.Since a battery is switching for a small time, the battery cannot provide a high current to flow through the coil in a short period. Capacitors can provide a very high current in a minimal time, unlike a battery. The charge across the capacitor is given to coil in three steps. First, the energy needed for acceleration is stored in the capacitor. Secondly, the energy stored in the capacitor is transmitted to the projectile in shortest possible time (high energy current peak creates a strong electromagnetic field). Third, the current pulse must be switched OFF before projectile passes half of coil length to prevent from being arrested at the centre of the magnet. The product of resistance and capacitance denotes the c...

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The Application of Electromagnetic Coil Launching Technology in Non-war Military Operations AC Machines

Wang

Zhang

2022

Lecture Notes in Electrical Engineering

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Dynamic research of multi-stage reluctance coil gun

Cited by 9 publications

References 1 publication

3 Boyutlu Sonlu Elemanlar Analizi Kullanılarak Farklı Mermi Geometrilerinin Relüktans Fırlatıcının Performansına Etkisinin İncelenmesi

3 Boyutlu Sonlu Elemanlar Analizi Kullanılarak Farklı Mermi Geometrilerinin Relüktans Fırlatıcının Performansına Etkisinin İncelenmesi

Design and Simulation of an Electromagnetic Launcher for Ordnance Applications

The Application of Electromagnetic Coil Launching Technology in Non-war Military Operations AC Machines

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