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RISS 인기검색어
- 검색키워드
- 저자 : 봉주성(Jusung Bong) (검색결과 2 건)
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정상진(Sangjin Jung),봉주성(Jusung Bong),백일호(Ilho Baek),허장욱(Jangwook Hur) 한국신뢰성학회 2021 신뢰성응용연구 Vol.21 No.1
Purpose: An improved target operational availability is required to maintain the combat readiness of a trainer plane. This study investigates the improvements in the failure rate of the trainer plane and its effect on the reliability, availability, and maintenance cost. Methods: The flight control system has an improved failure rate with a higher mean time between failure (MTBF) value. It is necessary to improve the failure rates of other subsystems, to meet the target operational availability. Results: The results improved the failure rate of items with frequent failures to meet the target operational availability of the trainer. Specifically, the operational availability and MTBF were improved by 8.6% and 194.4%, respectively. However, the propsed methed can reduce failure rates and operating maintenance costs by 45.3% and 34.3%, respectively. Conclusion: As a method of improving the target operational availability required for maintaining the combat readiness of the trainer, the impact on the reliability, availability, and operation maintenance cost of the trainer was analyzed when improving the failure rate of items with frequent failures.
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Development Direction of Reliability-based ROK Amphibious Assault Vehicles
Ilho Baek(백일호),Jusung Bong(봉주성),Jangwook Hur(허장욱) 한국기계가공학회 2021 한국기계가공학회지 Vol.20 No.2
A plan for the development of reliability-based ROK amphibious assault vehicles is proposed. By analyzing the development case of the U.S. EFV, considerations for the successful development of the next-generation Korea Forces amphibious assault vehicle are presented. If the vehicle reliability can be improved to the level of the fourth highest priority electric unit for power units, suspensions, decelerators, and body groups, which have the highest priority among fault frequency items, a system level MTBF of 36.4%↑ can be achieved, and the operational availability can be increased by 3.5%↑. The next-generation amphibious assault vehicles must fulfill certain operating and performance requirements, the underlying systems must be built, and sequencing of the hybrid engine and the modular concept should be considered. Along with big-data- and machine-learning-based failure prediction, machine maintenance based on augmented reality/virtual reality and remote maintenance should be used to improve the ability to maintain combat readiness and reduce lifecycle costs.
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