• Title/Summary/Keyword: weapons

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A Study on Developing a CER Using Production Cost Data in Korean Maneuver Weapon System (한국형 기동무기체계 양산비 비용추정관계식 개발에 관한 연구)

  • Lee, Doo-Hyun;Kim, Gak-Gyu
    • Journal of the Korean Operations Research and Management Science Society
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    • v.39 no.3
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    • pp.51-61
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    • 2014
  • In this paper, we deal with developing a cost estimation relationships (CER) for Korean maneuverable weapons systems using historical production cost. To develop the CER, we collected the historical data of the production cost of four tanks and five armored vehicles. We also analyzed the Required Operational Capability (ROC) of the weapons systems and chose cost drivers that can compare operational capabilities of the weapons systems We used Forward selection, Backward selection, Stepwise Regression and $R^2$ selection as the cost drivers which have the greatest influence with the dependent variables. And we used Principle Component Regression, Robust Regression and Weighted Regression to deal with multicollinearity and outlier among the data to develop a more appropriate CER. As a result, we were able to develop a production cost CER for Korean maneuverable weapons systems that have the lowest cost errors. Thus, this research is meaningful in terms of developing a CER based on Korean original cost data without foreign data and these methods will contribute to developing a Korean cost analysis program in the future.

A Study on the Performance Evaluation of Cycloid Reducer (사이클로이드 감속기의 성능평가에 관한 연구)

  • Park, Jin-Seok;Kim, Ki-Hun;Kim, Lae-Sung;Qin, Zhen;Lyu, Sung-Ki
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.16 no.3
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    • pp.113-118
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    • 2017
  • In this paper, a study on the performance evaluation of a cycloid reducer for remote weapons systems is presented. Reduction gears applied to remote weapons vehicles need to be compact and capable of large torque transmissions as well as require structural optimization, high load capacity, and high precision position control. To meet these requirements, a cycloid reducer with low backlash, high precision, high overload capability, high rigidity, and high efficiency is required. Thus, a cycloid reducer with a reduction ratio of 127:1, backlash of 1 arcmin (1/60 deg) or less, and reduction gear efficiency of 70% or more, which are the design requirements for a remote weapons system, was designed utilizing a design and analysis program (HEXAGON) for gear engineering. To confirm the performance of the cycloid reducer, the hardness of the main components of the manufactured cycloid reducer, reduction ratio, and efficiency were measured.

An Analysis of Haeseong Guided Missile Reliability (Using Field Data) (해성 유도탄 발사체계 신뢰도 분석(야전운용제원 활용))

  • Hur, Jangwan;Min, Seungsik;Oh, Kyungwon
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2017.05a
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    • pp.142-143
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    • 2017
  • As weapons systems are fused with advanced technologies, many of the expenses for research and development are favorites, and that group demands high reliability of weapons systems before the lifecycle. However, empirical studies on the reliability of defense weapons systems are restricted to lack of attention and limitation of data. In this research, we proposed the process of collecting field operation specifications based on the experience gathered by visiting directly to the weapons system operator's trap, strategy and maintenance support force (COMROKFLT, Naval Logistics Command, Naval Shipyard, production company). We used this to derive the operation MTBF of the solubility inducing bullet shooting system and compared it with the target value at the time of development.

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Review about the Lightning Protection System for Ground Facilities of Anti-aircraft Weapons System (뇌 보호시스템의 대공무기체계 지상시설 적용에 대한 고찰)

  • Jung, Kyoungwook;Shim, Donghyouk;Son, Donghyeop
    • Journal of the Korea Institute of Military Science and Technology
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    • v.24 no.3
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    • pp.339-347
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    • 2021
  • Recently, the incidence of lightning in Korea has been increasing more and more. The damage caused by lightning is also getting worse. Lightning protection system is a prerequisite, not a sufficient condition. Considering the characteristics of lightning, there is a high frequency of lightning strikes in highlands. So, high grades of LPS should be applied to ground facilities of anti-aircraft weapons systems. 4-Level LPS was applied on groung facilities of anti-aircraft weapons system based on lightning incidence rate in past. There are some possibilities of damage from lightning in anti-aircraft weapons system. So, we have to readjust the LPS level with grounding, lightning rods and surge protect device based on lightning incidence rate in now days. Propose 2-level LPS and design with lightning rods, surge protector, separated grounding in this paper.

An Analysis of Haeseong Guided Missile Launcher Reliability Using Naval Field Data (야전운용자료를 활용한 해성 유도무기 발사체계 신뢰도 분석)

  • Hur, Jangwan;Oh, Kyungwon
    • Journal of Aerospace System Engineering
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    • v.11 no.3
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    • pp.39-46
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    • 2017
  • Required military demands for high reliability of weapons systems throughout stages of life cycles as high technologies combined with weapons systems, research and development continue to drive costs upwards. However, for studies on reliability of national defense weapons systems, empirical research is limited because of a lack of interest or limitations relative to data collection. This study proposes a collection process relative to field operating specifications, based on data relative to experience and management collected by visiting vessels onsite, that operate weapons systems. In addition, after drawing the operating MTBF of the launching system for the Haeseong guided missile launcher, this study compared and analyzed that with values predicted during development and identifies parts with low operating values as compared to predicted values. Results of this study relative to maintenance support troops and weapon systems development companies will contribute to maintaining operational deployment of the launching system of the Haeseong guided weapons system.

A Study on the Planning of Civil Defense Shelter and Design 1 - On the ideas of the State of Civil Defense Shelter & Design Criteria - (민방위 대피시설 계획 및 설계 방안에 관한 연구 1 - 민방위 대피시설의 현황 및 설계기준을 중심으로 -)

  • Park, Namkwun;Paik, Sungkun
    • Journal of the Society of Disaster Information
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    • v.10 no.3
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    • pp.358-365
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    • 2014
  • North Korea has been preparing for WMD(Weapons Mass Destruction) using asymmetric force since it recognized the economic effects of CBR (Chemical, Biological, Radiological) weapons system operation and the limitations of conventional weapons. However, the threat only to conventional bombs, missiles and etc. is considered on the current Civil Defense Shelter, which could increase civil damages, not responding appropriately to disasters such as CBR weapons, terror attacks and etc. Therefore, this study confirms the current situation of Civil Defense Shelter and design criteria focused on CBR disasters so that we could make a plan and design of Civil Defense Shelter. In addition, we suggest the research result and improvements on Civil Defense Shelter and Design.

Small-Sample Inspection Plans for the New Product Quality Level Evaluation of Finite Population : Focused on Guided Weapons in Development Stage (생산수량이 한정된 신제품의 품질수준 평가를 위한 샘플링검사 방법 : 개발단계 유도무기를 중심으로)

  • Shin, Byung-Cheol;Byun, Jai-Hyun;Lee, Chang-Woo;Lee, Ki-Yong;Choi, Jong-Soo;Woo, Hee-Sung;Seo, Bo-Gil
    • Journal of Korean Institute of Industrial Engineers
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    • v.41 no.5
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    • pp.481-487
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    • 2015
  • In the product development stage, it is very important to ensure demanded quality level before moving to the full-scale manufacturing. For example, in developing guided weapons, live-fire tests are required to verify the final performance of the weapons which are very expensive. The quality evaluation of the guided weapons needs destructive testing, which makes it necessary to test as small number of samples as possible. This paper presents sampling inspection plans and calculating system for finite population guided weapons, which can meet the demanded quality level and confidence level with the minimum number of performance tests. The result of this paper can be useful for any kind of costly destructive testing.

Computational and experimental forensics characterization of weapons-grade plutonium produced in a thermal neutron environment

  • Osborn, Jeremy M.;Glennon, Kevin J.;Kitcher, Evans D.;Burns, Jonathan D.;Folden, Charles M.III;Chirayath, Sunil S.
    • Nuclear Engineering and Technology
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    • v.50 no.6
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    • pp.820-828
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    • 2018
  • The growing nuclear threat has amplified the need for developing diverse and accurate nuclear forensics analysis techniques to strengthen nuclear security measures. The work presented here is part of a research effort focused on developing a methodology for reactor-type discrimination of weapons-grade plutonium. To verify the developed methodology, natural $UO_2$ fuel samples were irradiated in a thermal neutron spectrum at the University of Missouri Research Reactor (MURR) and produced approximately $20{\mu}g$ of weapons-grade plutonium test material. Radiation transport simulations of common thermal reactor types that can produce weapons-grade plutonium were performed, and the results are presented here. These simulations were needed to verify whether the plutonium produced in the natural $UO_2$ fuel samples during the experimental irradiation at MURR was a suitable representative to plutonium produced in common thermal reactor types. Also presented are comparisons of fission product and plutonium concentrations obtained from computational simulations of the experimental irradiation at MURR to the nondestructive and destructive measurements of the irradiated natural $UO_2$ fuel samples. Gamma spectroscopy measurements of radioactive fission products were mostly within 10%, mass spectroscopy measurements of the total plutonium mass were within 4%, and mass spectroscopy measurements of stable fission products were mostly within 5%.

A Brief History and National Safety Regulation on the Weapons of Mass Destruction Including Biological Agents (생물작용제를 포함한 대량살상용 생물학적 무기에 대한 역사 및 법률적 안전규제 사항에 관한 고찰)

  • Kim, Jee-Hee;Lee, Si-Young
    • Journal of the Korean Society of Safety
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    • v.22 no.4
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    • pp.102-109
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    • 2007
  • A bioterrorism attack is the deliberate release of viruses, bacteria, or other germs(agents) used to cause illness or death in people, animals, or plant. These agents are found in nature, but it is possible that they could be changed to increase their ability to cause disease, make them resistant to current medicines, or to increase their ability to be spread into the environment. Terrorists may use biological agents because these agents can be extremely difficult to detect and do not cause illness for several days. Some bioterrorism agents, like smallpox virus, can spread from person to person, like anthrax, can not. From these agents, we discussed the characteristics of biological agents and national safety regulation on the weapons of mass destruction including bioterrorism.

Framework for Determining Requirements in the Weapons systems Acquisition Process (무기 획득과정에서의 요구사항 결정 프레임워크)

  • Yun, Ha-Neul;Ok, Young-Ho;Wang, Ji-Nam
    • Journal of the Korean Society of Systems Engineering
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    • v.8 no.1
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    • pp.77-82
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    • 2012
  • In Weapons acquisition process, if the requirements are not clear, it leads to confusion and conflict in business. In the development of next-generation weapons, to define and derive requirements has to start from decision of operational concept. It is difficult task and has many uncertainties. This paper has goal about development of knowledge acquisition process that derive military operational scenario-based requirements acquisition process and framework that classify and save the derived requirements for next project. That framework can generate new class and category, also suggest that verification of requirements. It help to derive and manage the requirements, and make it easy to grasp the requirements. Accordingly, it can help make military requirement plan and weapon acquisition process.