Muzzle Exit Sensation Based on Geomagnetic Detection with Coils

Up to now, some S&A of non-spin fuze contain single safety feature which takes setback as its only stimuli, and other adopt two independent stimuli which take takes air resistance as its second stimuli accomplished by turbine mechanism except setback. But the shortages of turbine confine its application in fuze, or influent operation effect and storability of fuze. This paper takes muzzle exit signal as the second stimuli, and discusses on board detection of muzzle exit signal with coils based on geomagnetic. Firstly the principle of this signal is analyzed, and then influence of geomagnetic and shooting parameters on signal are analyzed with mathematics and simulation, at last the conclusion that passive muzzle exit signal can be sensed in all condition is drawn.