Two fluxes multistage induction coilgun

Innovative Ideas in Science 2016

Gherman, L.^1 ; Pearsica, M.^1 ; Circiu, I.^2 ; Rotaru, C.^2

Henri Coand Air Force Academy, Air Defense Department, Mihai Viteazul str., no. 160, Brasov

500183, Romania^1

Henri Coand Air Force Academy, Aviation Department, Mihai Viteazul str., no. 160, Brasov

500183, Romania^2

关键词: Coilguns;    Magnetic field coil;    Magnetic field density;    Maximum forces;    Phase difference;    Power sources;    Radial magnetic field;    Simulation software;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/200/1/012050/pdf
DOI  :  10.1088/1757-899X/200/1/012050

来源: IOP

【 摘 要 】

This paper presents a brand new induction electromagnetic launcher, which uses two magnetic fluxes in order to accelerate a projectile. One magnetic flux induce a current in the armature and the second magnetic flux is creating a radial magnetic field. This aproach offer multiple advantages over single flux designs. First we are able to control the induced current in armature because we use the coil just to induce current inside the ring with a great efficiency. Second advantage is the angle of 900between magnetic field density B and the ring. We used the induction to avoid contact between armature and accelerator. In order to create the magnetic field radial we used four coils perpendicular on armature. This approach alove us to control the phase difference between induced current in armature and current in magnetic field coils for a maximum force. The phase difference is obtained by changing the frequency of magnetic field coils power source. We used simulation software to analyze, and simulate a multistage induction coilgun design with two fluxes. The simulation results demonstrated the theoretical results.