Fuze explosive train device and method

A fuze explosive train device for delaying detonation of a munition after impact with a target, comprising:

• a pressure cartridge including a stab firing pin located intermediate a gas generator, and a supporting disk, said supporting disk having a thickness of from about 0.0005 inch to about 0.01 inch;
• the stab firing pin being seated within the supporting disk, wherein the supporting disk stabilizes the stab firing pin;
• a stab detonator disposed at a distance from the stab firing pin so that a first gap is formed therebetween said first gap being about 0.001 inch to about 0.1 inch;
• a lead disposed across a second gap from the stab detonator;
• wherein the gas generator transfers energy to the stab firing pin after a pyrotechnic delay, forcing the stab firing pin to move in the first gap toward the stab detonator, and further causing the supporting disk to rupture with the movement of the stab firing pin;
• wherein the rupturing of the supporting disk provides a predetermined mechanical delay;
• wherein the mechanical delay is controlled by a selective choice of material and thickness of the disk;
• and
• wherein the rupturing of the supporting disk frees the stab firing pin to initiate the stab detonator following the predetermined mechanical delay, and to transfer an explosive energy of the stab detonator across the second gap to initiate the lead in order to ignite the device.