Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Transmission characteristics of magnetically coupled resonant ignition system in complex operating conditions
| DOI: | 10.11809/bqzbgcxb2025.03.011 |
| Keywords: | magnetic coupling resonance; ignition system; coaxial solenoid; metal; high temperature |
| Abstract: | A magnetic coupled resonant ignition system is designed. Aiming at the problem that the temperature of the barrel and primary coil increases due to different metal materials and gun firing, which affects the transmission characteristics of the system, a mathematical model of the ignition system is established. The finite element software COMSOL was used to simulate the system in free space, in different inner diameters, in metal tubes of different materials, and at different temperatures. By studying load power and transmission efficiency and other parameters, the transmission characteristic variation rule was obtained. The results show that the resonant frequency of the system is changed from 100kHz to 142kHz and 139kHz respectively by iron and alloy steel. Taking 54mm iron pipe and alloy steel pipe as examples, the transmission efficiency at the new resonant frequency is reduced to 2.96% and 3.34% respectively at normal temperature, and further decreased by 0.26% and 0.02% at 400β. The influence of ferromagnetic metal on the transmission characteristics is greater than that of non ferromagnetic metal. The smaller the inner diameter of metal tube is, the higher the temperature is, the greater the influence is. The effect of temperature change on ferromagnetic metals is greater. |
| Issue: | Vol. 46 No. 3 (2025) |
| Published: | 2025-03-31 |