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한국형 저비용 저고도 공중보급 체계용 낙하산 전개 특성 풍동시험
김승필,정인식,권기범,최윤석,정형석,Kim, Seung Pil,Jung, Insik,Kwon, Kybeom,Choi, Younseok,Chung, Hyoungseog 한국군사과학기술학회 2017 한국군사과학기술학회지 Vol.20 No.3
A wind tunnel test for the scaled parachute models was performed to verify aerodynamic characteristics for practical usage of Korean low cost low altitude aerial delivery system. The cruciform shaped cargo parachute models for heavy and light weight were ejected into wind tunnel test section; and the drag forces acting on the models in steady condition were measured in accordance with velocity. Also, the maximum opening forces during inflation were obtained and captured by a high speed camera to analyze the inflation characteristics and evaluate the design of the low cost aerial delivery system. The results showed a reliable stability and met the design requirement of delivery operation system for R.O.K Air Force.
문관호,홍윤기,오성남,김태민,Mun, Gwan Ho,Hong, Yun Ky,Oh, Seong Nam,Kim, Tae Min 한국군사과학기술학회 2016 한국군사과학기술학회지 Vol.19 No.4
The study on the precipitation particle distribution models in Korea for the environmental test and evaluation (T&E) from huge amount of measuring and reanalysis data is presented. Instead of related specifications of MIL-HDBK-310, with these models it can be possible to realize more realistic and efficient design and environmental T&E for the military and civil products especially for the atmospheric flying vehicles using in Korea.
AHP 기법을 이용한 한국형 차륜형 지휘소차량 디자인에 관한 연구
김건국,김석환,이정엽,김정우,최인숙,이재우,김의환,Kim, Gunkook,Kim, Seokhwan,Lee, Jeongyeob,Kim, Jeongwoo,Choi, Insuk,Lee, Jaewoo,Kim, Uiwhan 한국군사과학기술학회 2017 한국군사과학기술학회지 Vol.20 No.5
Traditionally, a design has been applied on a various defense area for the improvement of the mobility, reducing the radar detection area and other reasons. In case of Korean Wheeled Armored Vehicle(WAV), a design has been also applied for retaining the agility and threatening feature in the battlefield. However some figures has been changed because of constraints such as assembling and manufacturing in the development stage. Today, the government has planned to develop the Wheeled Armored Command Post Vehicle(CPV), a variant of WAV, and it is necessary to apply the latest design trend, which is suitable for the concept of the CPV, on it.
정건호,염봉진,Jung, Kun-Ho,Yum, Bong-Jin 한국군사과학기술학회 2009 한국군사과학기술학회지 Vol.12 No.2
Some of the wargame simulators currently used in the Korean Army were developed by other countries, and do not adequately reflect the Korean Peninsula terrain and weapon systems. This implies that these war game simulators need to be calibrated with respect to the input parameters for properly assessing the effectiveness of the Korean weapon systems. In this paper, AWAM, a wargame simulator, is calibrated in terms of the time-based fighting power(FP). The FP data obtained from the Korea Combat Training Center(KCTC) are used as a reference, and the differences between the AWAM and KCTC FP data are calculated at certain points in time. Then, the Taguchi robust design method is adopted using the probabilities of hitting for the K-2 rifle as controllable input parameters. Two performance characteristics are used. One is the difference between the AWAM and KCTC FP data and the other is the score derived by grouping the difference data. For each case, optimal settings of the probabilities of hitting are determined such that the mean of each characteristic is close to 0 with its dispersion being as small as possible.
군사용 방사선 계측기 PDR-1K 반응도 평가 : 방향 및 에너지 의존성을 중심으로
박원석,최준혁,정도영,김장오,민병인,Park, Wonseok,Choi, Junhyuk,Jung, Doyoung,Kim, Jango,Min, Byungin 한국군사과학기술학회 2017 한국군사과학기술학회지 Vol.20 No.2
In this paper, we performed a evaluation for angular and energy dependence of military radiation detector PDR-1K. Its measuring range is divided into two section, low and high, and each range has a GM tube separately owing to broad scale. We observed a change in relative angular reactivity within 0.928 ~ 1.188 in low range and within 0.743 ~ 1.000 in high range from $-90^{\circ}$ to $+90^{\circ}$. The evaluation for energy dependence appeared a relative reactivity within 0.892 ~ 1.000 above 83 keV. This means PDR-1K isn't possible to use below 83 keV of radiation energy. It is possible to provide response information to user and to increase reliability of radiation measurement through this paper.
한국형 전술차량 방탄유리 환경 및 방호력 시험 적용 기법 연구
박진원,박영찬,김선진 한국군사과학기술학회 2018 한국군사과학기술학회지 Vol.21 No.1
Korean-peacekeeper’s transparent armors in Iraq showed delamination, cracking and clouding a decade ago. And there were also similar deterioration recurrences in KLTV during the operational test a few years ago. Also, the differences between operational capability & lab Bullet-proof test condition, and insufficiency of military protection spec resulted in incomplete bullet-proof results. Moreover, although so many ground weapon systems have been developed, there were not secure test & evaluation codes to verify transparent armoured glasses equal to advancedoverseas products. So in this study, first, environmental test codes were established that all tests should be carried out as the application of only one specimen with newly adopted thermal shock test instead of completing each test with different one. Second, protection standards were integrated through the analysis of global developed country’s specifications and reinforced as adding to the real mock-up condition if vehicle’s glasses are smaller than standard specimen. Hereby, by applying to test-codes which including actual operational & vehicular conditions, the gap between development test and operational environment was minimized.
김성우,이병화,유연운,이종훈,임종봉,Kim, Sung-Woo,Lee, Byoung-Hwa,Yu, Yeon-Woon,Lee, Jong-Hoon,Yim, Jong-Bong 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.3
Mission Equipment Package(MEP) system is a collection of avionic components that are integrated to perform the mission of the Korean Utility Helicopter(KUH). MEP system development is classified mission-critical embedded system but KUH MEP system developed including flight-critical data implementation. It is important to establish the good development and verification process for the successful system development. This paper describe the development and verification process in each phase for the KUH MEP system. MEP system design is verified through the qualification test, system failure test and compatibility test in System Integration Laboratory(SIL).
M-추정을 사용한 국방과학기술 수준조사 기술성장모형의 이상치 제거
김장헌,Kim, Jangheon 한국군사과학기술학회 2020 한국군사과학기술학회지 Vol.23 No.1
Technology growth curve methodology is commonly used in technology forecasting. A technology growth curve represents the paths of product performance in relation to time or investment in R&D. It is a useful tool to compare the technological performances between Korea and advanced nations and to describe the inflection points, the limit of improvement of a technology and their technology innovation strategies, etc. However, the curve fitting to a set of survey data often leads to model mis-specification, biased parameter estimation and incorrect result since data through survey with experts frequently contain outlier in process of curve fitting due to the subjective response characteristics. This paper propose a method to eliminate of outlier from a technology growth curve using M-estimator. The experimental results prove the overall improvement in technology growth curves by several pilot tests using real-data in Defense Science and Technology Survey reports.
조차현,허완욱,윤정환,Cho, Cha-Hyun,Heo, Wan-Ok,Yoon, Jung-Hwan 한국군사과학기술학회 2010 한국군사과학기술학회지 Vol.13 No.1
At present, advanced countries are focusing on the study of Demilitarization Method of Conventional Ammunitions. In this paper, we will report the current trends of Demilitarization of Conventional and Guided Missile ammunitions, and present the efficient Demilitarization Methods of new development of Guided Missile ammunitions in Korea.
한국형 전투기 개발을 위한 전투기 임무격렬도 모델 연구
김석호,황영하,신기수,Kim, Sug-Ho,Hwang, Young-Ha,Shin, Ki-Su 한국군사과학기술학회 2009 한국군사과학기술학회지 Vol.12 No.2
The aim of this paper is to propose fighter aircraft's mission severity model which can be used as one of key factors for designing a structure and determining design life of KF-X. The mission severity is a quantitative data of flight loads and expressed by Nz(Vertical Load Factor) exceedances or occurrences. The severities of the flight loads depended on the circumstances of the countries which operate fighter aircraft. In this paper we have studied on Nz occurrences/exceedances of ROKAF fighter aircraft to generate mission severity model for the KF-X. The analyses of flight data were accomplished by using the Matlab.