Jun 2, 2026

US12644681 - Simultaneous ignition method for hollow modular charge using cluster laser

A simultaneous ignition method for a hollow modular charge using a cluster laser according to the present invention can maximize an intensity of a laser beam per unit area radiated to a gunpowder coating part ( 39 ) by adjusting a path of the laser beam from first, second, third, fourth, fifth, and sixth laser oscillators ( 11, 12, 13, 14, 15, 16 ) igniting the gunpowder coating parts ( 39 ) through one-to-one matching with unit charges Nos. 1, 2, 3, 4, 5, and 6 ( 31, 32, 33, 34, 35, 36 ) having a charge inner diameter ( 38 ) as they goes away due to the linear arrangement of the unit charges Nos. 1, 2, 3, 4, 5, and 6 ( 31, 32, 33, 34, 35, 36 ), thereby simultaneously igniting a plurality of lasers in a cluster-shaped combination.

Assignee: AGENCY FOR DEFENSE DEVELOPMENT
Inventors: Sang-Tae Ahn, Yong-Seon Lee, Yun-Jung Oh
Filing date: 2024-11-21

laserignitionmodularchargegunpowder

The patent describes a method and device for simultaneously igniting a hollow modular charge using a cluster laser, which enhances the intensity of the laser beam directed at the gunpowder coating. It features a linear arrangement of multiple unit charges, with corresponding laser oscillators that adjust the laser path to optimize ignition across all charges.

Claim 1

1 . A simultaneous ignition cluster laser device for a hollow modular charge, comprising: a hollow modular charge with a charge inner bore; and a laser cluster configured to ignite a gunpowder coating part of the charge inner bore by radiating a laser, wherein the laser cluster maximizes an intensity of a laser beam radiated per unit area as the laser beam shifts away from an inlet of the charge inner bore by adjusting a path of the laser beam, wherein the hollow modular charge comprises a plurality of unit charges Nos. 1, 2, 3, 4, 5, and 6 arranged linearly along the charge inner bore, and the laser cluster comprises a plurality of first, second, third, fourth, fifth, and sixth laser oscillators respectively corresponding to the unit charges Nos. 1, 2, 3, 4, 5, and 6 in a one-to-one matching manner, wherein each of the first, second, third, fourth, fifth, and sixth laser oscillators adjusts the path of the laser beam as the laser beam propagates over an increased distance due to the linear arrangement of the unit charges Nos. 1, 2, 3, 4, 5, and 6, and the adjustment of the path of the laser beam maximizes an intensity of the laser beam per unit area radiated to each of the unit charges Nos. 1, 2, 3, 4, 5, and 6. a hollow modular charge with a charge inner bore; and a laser cluster configured to ignite a gunpowder coating part of the charge inner bore by radiating a laser, wherein the laser cluster maximizes an intensity of a laser beam radiated per unit area as the laser beam shifts away from an inlet of the charge inner bore by adjusting a path of the laser beam, wherein the hollow modular charge comprises a plurality of unit charges Nos. 1, 2, 3, 4, 5, and 6 arranged linearly along the charge inner bore, and the laser cluster comprises a plurality of first, second, third, fourth, fifth, and sixth laser oscillators respectively corresponding to the unit charges Nos. 1, 2, 3, 4, 5, and 6 in a one-to-one matching manner, wherein each of the first, second, third, fourth, fifth, and sixth laser oscillators adjusts the path of the laser beam as the laser beam propagates over an increased distance due to the linear arrangement of the unit charges Nos. 1, 2, 3, 4, 5, and 6, and the adjustment of the path of the laser beam maximizes an intensity of the laser beam per unit area radiated to each of the unit charges Nos. 1, 2, 3, 4, 5, and 6.

Google Patents

https://patents.google.com/patent/US12644681

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12644681