초록 ▼

A self consumable initiator is comprised of a consumable material selected from pyrotechnics, propellants, exothermic alloys, and primary explosive compositions, and one or more lengths of a fiber optic material in physical contact with or embedded in the consumable material. Uniform density of lase

A self consumable initiator is comprised of a consumable material selected from pyrotechnics, propellants, exothermic alloys, and primary explosive compositions, and one or more lengths of a fiber optic material in physical contact with or embedded in the consumable material. Uniform density of laser energy is transmitted through the fiber optic material to the consumable material in sufficient amount to stimulate the consumable material to its respective ignition point. The consumable material self consumes as it serves to ignite a larger quantity of material such a solid propellant grain. The consumable material is in the form of pellets powders, or castable shapes. When installed in a rocket motor case, the self consumable initiator is bonded or installed as a castable pyrotechnic which conforms to the contour of the front end of a solid rocket motor case. Subsequently, a solid propellant grain is bonded or cast in place in intimate contact with the initiator. After being stimulated to its ignition point with laser energy the consumable material serves to ignite the solid propellant grain. The consumable material is in the form of pellets, powders, or castable shapes. When installed in a rocket motor the self consumable initiator is bonded or installed as a castable pyrotechnic which conforms to the contour of the front end of a solid rocket motor case. Subsequently, a solid propellant grain is bonded or cast in place in intimate contact with the initiator. After being stimulated to its ignition point with laser energy the consumable material serves to ignite the solid propellant grain.

대표청구항 ▼

A self consumable initiator including a consumable material in combination with a fiber optic material which functions to conduct laser energy from a laser source to said consumable material to thereby stimulate said consumable material to its ignition point and thereafter said consumable material s

A self consumable initiator including a consumable material in combination with a fiber optic material which functions to conduct laser energy from a laser source to said consumable material to thereby stimulate said consumable material to its ignition point and thereafter said consumable material self consumes, said self consumable initiator comprising: (i) A consumable composition selected from the group of easily - ignitable compositions specified under pyrotechnic groups A-C as follows: Pyrotechnic group A: metal fuel-oxidizer, composition 1: magnesium 60% by weight and polytetrafluorethylene 40% by weight, composition 2: boron 23.7%±2% by weight, potassium nitrate 70.7%±2% by weight, and binder 5.6% by weight; composition 3: zirconium 10 microns particle size 45% by weight and potassium perchlorate 6 to 17 microns particle size 55% by weight; and composition 4: aluminum flake 17 to 44 microns particle size 45% by weight and potassium perchlorate 6 to 17 microns particle size 55% by weight; Pyrotechnic group B: primary explosive, composition 1: lead acids; and composition 2: lead styphnate; Pyrotechnic group C; propellants, composition 1: double-base propellants; composition 2: single base propellants, composition 3: composite propellants; and composition 4: black powders; and, (ii) One or more lengths of a fiber optic material in contact with said consumable composition, said one or more lengths of a fiber optic material adapted for receiving laser energy of a uniform energy density from a laser source whereby said consumable composition is stimulated to its ignition point and thereafter self consumes.