
Base Detonating Fuze M539 is of the super quick action, point initiating type used with 152mm HEAT-T-MP cartridges.
The fuze is based upon the principle of a piezoelectric element accumulating a charge and firing an electrical detonator housed in an arming rotor. Control power supply M22 of the fuze includes a polarized piezoelectric element. The rotor is mounted transverse to the axis of rotation of the fuze, and is locked in the unarmed position by centrifugal detents. The rotor features a safety mechanism to return to the unarmed position in the absence of spin or decay in spin rate, as would be sensed in case of an accidental partial arming. The switch provided in the fuze for delivering the stored charge to the detonator is the impact ball type.
No information about functioning.
No information about hazardous components.
Nothing else to see.
TM 43-0001-28, Artillery Ammunition (chg 11, 2003)