Safety ignition device for high altitude dual pulse motor including the same

A safety ignition device, comprising:

• a housing that forms an accommodation space therein and is coupled to a front of a combustion tube;
• a primary circuit unit and a secondary circuit unit that are mounted inside the housing and generate an ignition signal to a primary propellant and a secondary propellant charged in the combustion tube, respectively;
• two primary through bulkhead initiators and two secondary through bulkhead initiators that are mounted inside the housing and electrically connected to the primary and secondary circuit unit, respectively;
• wherein the two secondary through bulkhead initiators are spaced apart from each other in a circumferential direction;
• a secondary ignition unit that is located under the secondary through bulkhead initiators and connected to the secondary through bulkhead initiators through an ignition passage formed under the secondary through bulkhead initiators to ignite the secondary propellant;
• a primary ignition device that is mounted on one end of the housing, electrically connected to the primary circuit unit, and accommodated in the combustion tube;
• and a primary ignition unit that is mounted at a lower end of the primary ignition device and ignites a primary propellant;
• wherein the primary ignition device has a primary detonation unit electrically connected to the primary circuit unit therein, and the primary through bulkhead initiator that is electrically connected to the primary detonation unit at a protrusion protruding from an end thereof;
• wherein the primary ignition unit accommodates a primary ignition agent ignited by the primary through bulkhead initiator therein and is fastened to the protrusion;
• and
• a hemispherical cap on a lower end of the primary ignition unit, the hemispherical cap having a plurality of flame passages formed downwardly.