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http://dx.doi.org/10.6108/KSPE.2022.26.2.012

Burn-back Analysis for Propellant Grains with Embedded Metal Wires  

Lee, Hyunseob (PGM Mechanical R&D Cetner, LIG Nex1 Co., Ltd.)
Oh, Jongyun (PGM Mechanical R&D Cetner, LIG Nex1 Co., Ltd.)
Yang, Heesung (PGM Mechanical R&D Cetner, LIG Nex1 Co., Ltd.)
Lee, Sunyoung (PGM Mechanical R&D Cetner, LIG Nex1 Co., Ltd.)
Khil, Taeock (PGM Mechanical R&D Cetner, LIG Nex1 Co., Ltd.)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.26, no.2, 2022 , pp. 12-19 More about this Journal
Abstract
Propellant grains with embedded metal wires have been used for enhancement of burning rate while maintaining high loading density. For the performance design of a solid rocket motor using propellant grain with embedded metal wires, burn-back analysis is required according to number, location, arrangement angle of metal wires, and augmentation ratio of the propellant burning rate near a wire region. In this study, a numerical method to quickly calculate a burning surface area was developed in response to the design change of the propellant grain with embedded metal wires. The burning surface area derived from the developed method was compared with the results of a CAD program. Error rate decreased as the radial size of the grid decreased. Analysis for characteristics of burning surface area was performed according to the number and location of metal wires, the initial and final phases were shortened and the steady-state phase was increased when the number of metal wires increased. When arranging the metal wires at different radii, the burning surface area rapidly increased in the initial phase and sharply decreased in the final phase compared to the case where the metal wires were disposed in the same radius.
Keywords
Solid Rocket Motor; Enhanced Burning Rate; Propellant Grain with Embedded Metal Wire; Burn-back Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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