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Characteristic Property of Combustion and Internal Ballistics of Triple-Based Propellant including RDX 含RDX的三基推进剂燃烧特性及内弹道
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-06-05 DOI: 10.9766/kimst.2022.25.3.321
Soojung Son, Wonmin Lee, William David Lee, Soon-Kil Kwon, Jinyoung Jung
{"title":"Characteristic Property of Combustion and Internal Ballistics of Triple-Based Propellant including RDX","authors":"Soojung Son, Wonmin Lee, William David Lee, Soon-Kil Kwon, Jinyoung Jung","doi":"10.9766/kimst.2022.25.3.321","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.3.321","url":null,"abstract":"The current development tend of the gun propellants that they should have low sensitivity and high energy. We studied a nitrocellulose based propellant composition that replaced sensitive NG with RDX and DEGDN which high energy and low sensitivity. The important factors in the design of the gun propellant were impetus and flame temperature. NC-based propellant containing RDX showed similar impetus but low flame temperature compared to KM30A1, a triple-based propellant. The developed propellant composition didn’t show any abnormal combustion reaction and the characteristics of ballistic resistance were also confirmed.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86542180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Study of Optimal Performance Improvement Method for Aircraft of Various Variants within the Same Type 同型多变型飞机性能优化改进方法研究
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-06-05 DOI: 10.9766/kimst.2022.25.3.311
Youngil Kim, Seung-Mo Ahn, Myeongseok Choi
{"title":"The Study of Optimal Performance Improvement Method for Aircraft of Various Variants within the Same Type","authors":"Youngil Kim, Seung-Mo Ahn, Myeongseok Choi","doi":"10.9766/kimst.2022.25.3.311","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.3.311","url":null,"abstract":"In this paper, we studied the optimal method of improving performance for aircraft having various variants within the same type. The study defined configuration of an entire fleet of aircraft being subject to a performance improvement program. And selected the most complicated aircraft configuration among them as a Standard Aircraft for modification by according to the proposed Aircraft Selection Process for developing an optimal Aircraft Performance Improvement Process. Based on the selected the Standard Aircraft, drew a system integration design result and carried out Evaluation Test and obtained Airworthiness Certification. Created the database with the design data of the Standard Aircraft, Evaluation Test, and Airworthiness Certification results, and applied it to variants of aircraft to complete the performance improvement program with optimized schedules and costs. By applying the proposed method to IFF performance improvement program, drew optimal system integration design and completed the program with minimized schedule.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89458392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Study on the Performance Prediction of Precision Linear Shaped Charge Using Numerical Analysis Method 基于数值分析方法的精密线性聚能药性能预测研究
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-06-05 DOI: 10.9766/kimst.2022.25.3.275
S. Lee
{"title":"The Study on the Performance Prediction of Precision Linear Shaped Charge Using Numerical Analysis Method","authors":"S. Lee","doi":"10.9766/kimst.2022.25.3.275","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.3.275","url":null,"abstract":"Linear Shaped Charge(LSC) is widely used as a separation system in the field of weapon system. However, there are some disadvantages that are charging lots of explosives due to lack of uniformity and having difficulties of the design of liner and explosives because of manufacturing process. In order to solve these problems, Precision Linear Shaped Charge(PLSC) that can design a liner independently and charge explosives uniformly has been developed. In this study, PLSC was designed to have a proper liner shape and amount of explosives, and the penetration test of PLSC with different stand-off distance from liner to target was conducted. On the basis of the penetration test results of PLSC, the numerical analysis method using AUTODYN was established and verified. The penetrative mechanism and characteristics of PLSC with targets of different materials was analyzed from experimental and numerical results.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90236618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Study of Test and Evaluation Method for Performance Improvement of Air to Ground Communication Radios 空对地通信无线电性能改进测试与评价方法研究
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-06-05 DOI: 10.9766/kimst.2022.25.3.267
Byeongheon Lee, S. Ahn, Myungsuk Choi, Jang-wook Hur
{"title":"A Study of Test and Evaluation Method for Performance Improvement of Air to Ground Communication Radios","authors":"Byeongheon Lee, S. Ahn, Myungsuk Choi, Jang-wook Hur","doi":"10.9766/kimst.2022.25.3.267","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.3.267","url":null,"abstract":"The Republic of Korea has a close cooperative relationship with NATO, of which the United States is a member. NATO is encouraged to follow UHF coalition waveforms for military air operations(SATURN) as defined in STANAG 4372. SATURN is a high-speed frequency hopping waveform with enhanced anti-jamming and security functions. Plans to improve the performance of existing military aircraft with air to ground radios to which SATURN function is applied. IFF case analysis and MRT evaluation plan were established to present an efficient test and evaluation plan for air to ground radios.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74947492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis on Infrared Stealth Performance of Metal Nano-coating on Radome Surface 天线罩表面金属纳米涂层红外隐身性能分析
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-06-05 DOI: 10.9766/kimst.2022.25.3.251
Yongwoo Lee, Injoong Chang, Juyeong Nam, H. Bae, H. Cho
{"title":"Analysis on Infrared Stealth Performance of Metal Nano-coating on Radome Surface","authors":"Yongwoo Lee, Injoong Chang, Juyeong Nam, H. Bae, H. Cho","doi":"10.9766/kimst.2022.25.3.251","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.3.251","url":null,"abstract":"Infrared stealth technology used in aircraft is applied to reduce the infrared signal by controlling surface temperature and emissivity using internal heat sink, low emissivity material or metamaterial. However, there is one part of the aircraft where the use of this technology is limited, and that is the radome. Especially, radome should have transmittance for the specific radio frequency, therefore, common stealth technology such as emissivity control surfaces cannot be applied to radome surface. In this study, we developed metal nano-coating for infrared stealth which is applicable to radome surface. We designed slot-type pattern for frequency selective transmission in X-band, and also controlled thickness of metal nano-coating for long wavelength infrared emissivity control. As a result, our infrared stealth surface for radome has 93.2 % transmittance in X-band and various infrared emissivities from 0.17 to 0.57 according to nano-coatings thickness. Also, we analyzed infrared signature of radome through numerical simulation, and finally reduced contrast radiant intensity by 97.57 % compared to polyurethane surface.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87168142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Research on Intercommunication Method for Tactical Information Among Heterogeneous Mobile Combat Vehicles 异构机动作战车辆间战术信息互通方法研究
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-04-05 DOI: 10.9766/kimst.2022.25.2.187
Il-Ho Choi, Hae-Whan No, Choong-Ho Song
{"title":"A Research on Intercommunication Method for Tactical Information Among Heterogeneous Mobile Combat Vehicles","authors":"Il-Ho Choi, Hae-Whan No, Choong-Ho Song","doi":"10.9766/kimst.2022.25.2.187","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.2.187","url":null,"abstract":"Modern Battle Fields are covered with various weapon systems, such as tanks, infantry vehicles, or artillery vehilces. In such environment, it is important to take it into consideration what kind of efficient method should be developed to communicate with heterogeneous friend combat systems for the exchange of tactical information aqcuired because military operations require coordinated actions. For this purpose, we made a research on tactical information equipments such as Battlefield Management Systems(BMSs) equipped in multiple kinds of Mobile Combat Vehicles(MCVs). The exchange of tactical information could be divieded into separate domains, such as connectivity, messages, and recognition processes by operators. In this article, we will deal with wireless radio connectivity, KVMF messages, and User Interfaces showing shared data.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79008830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Direction Finding and Tracking using Single-Ring Circular Array Antenna and Space Division Table 基于单环圆阵列天线和空间分割表的测向与跟踪
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-04-05 DOI: 10.9766/kimst.2022.25.2.117
Hyeon Park, D. Woo, Jaesik Kim, Jinsung Park
{"title":"Direction Finding and Tracking using Single-Ring Circular Array Antenna and Space Division Table","authors":"Hyeon Park, D. Woo, Jaesik Kim, Jinsung Park","doi":"10.9766/kimst.2022.25.2.117","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.2.117","url":null,"abstract":"Single-ring circular array antennas can be applied to direction finding systems in order to use nose-section in other purposes, and the interferometry is a proper direction finding method to those systems. We usually make the interferometer baseline long enough to achieve good angular accuracy. However, an interferometer with baseline longer than a half-wavelength has the ambiguity problem. In this paper, we present a novel method for solving the ambiguity problem in interferometry systems. This technique is based on the amplitude comparison method and the space division table, and it can place a target within the angular region in which the ambiguity problem does not occur by roughly estimating direction-of-arrival. The Monte Carlo simulation results show that proposed method can effectively remove the ambiguity problem in the system.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86914939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mark XIIA(Mode 5) IFF System Integration and Certification Test for Surface to Air Missile System Mark XIIA(模式5)地空导弹系统敌我识别系统集成与认证试验
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-04-05 DOI: 10.9766/kimst.2022.25.2.160
Woo-Hyun Kim, Se-Young Jung, Yun-Soo Lee, Se-Myong Chang
{"title":"Mark XIIA(Mode 5) IFF System Integration and Certification Test for Surface to Air Missile System","authors":"Woo-Hyun Kim, Se-Young Jung, Yun-Soo Lee, Se-Myong Chang","doi":"10.9766/kimst.2022.25.2.160","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.2.160","url":null,"abstract":"The new IFF mode, Mode-5 replacing Mode-4, has already been established by the US DoD for its allies and NATO forces. A IFF retrofit program for replacing the Mark XII Mode-4 with Mark XIIA Mode-5 is in progress in order to overcome the security limitations of the former in R.O.K. IFF certification test for the new mode, Mode-5, has been performed on medium range surface to air missile platform of the Korean armed forces for the first time in R.O.K and this is regarded as a monumental event in Korean defense industry. The present paper is a discussion on the procedures applied to the IFF system retrofit and integration, lessons learned from AIMS test with the US AIMS PO as observer. The minimum modification from the existing Mark XII Mode-4 to Mark XIIA Mode-5 and evolutional adaption from previous design including interoperability are required for the system retrofit. Letter of Certification was received from the US AIMS PO after the tests. The authors propose that the lessons learned and know-how acquired during the tests are managed by the R.O.K Government as the standard structure of a database. It is expected that the use of the database will reduce the developmental difficulties and risk, also increase efficiency in future developments and other projects.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86880520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Research on Applicability of Laser Ablation Propulsion to Space Debris Removal by Simulations 激光烧蚀推进在空间碎片清除中的适用性仿真研究
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-04-05 DOI: 10.9766/kimst.2022.25.2.169
S. Yoo, Seung-Min Lee
{"title":"Research on Applicability of Laser Ablation Propulsion to Space Debris Removal by Simulations","authors":"S. Yoo, Seung-Min Lee","doi":"10.9766/kimst.2022.25.2.169","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.2.169","url":null,"abstract":"Laser ablation propulsion(LAP) is the method to create impulse by laser ablation. It can be used to deorbit the space debris(SD), as its long-range property and versatility on any material. In this paper, we find out several requirements of the LAP system(LAPS) to deorbit the SD by simple numerical calculations of the SD orbit and laser beam flux. As a result, minimum operable altitude angle turned out to be a crucial variable to the LAPS. Moreover, if minimum operable altitude angle is 10°, and if the minimum distance between the LAPS and the SD is below 450 km, 1 m/s2 is sufficient to deorbit the SD by once. With 18 kJ/3 ns pulsed laser and cube shaped 100 kg SD, 1 m/s2 acceleration can be achieved by increasing the pulse repetition rate over 34~53 Hz, depending on the size of the SD. This capability could compare with the conceptual design of the Japan Establishment for a Power-laser Community Harvest(J-EPoCH) facility, which include 8 kJ, 5 PW@100 Hz laser.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86703188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Process for Identifying QoS Requirements in the Multi-Domain Operations Environment 多域运行环境下QoS需求识别流程
Journal of the Korea Institute of Military Science and Technology Pub Date : 2022-04-05 DOI: 10.9766/kimst.2022.25.2.177
Dongsuk Park, Bong-ik Cho, Taehyung Park, Jaesung Lim
{"title":"Process for Identifying QoS Requirements in the Multi-Domain Operations Environment","authors":"Dongsuk Park, Bong-ik Cho, Taehyung Park, Jaesung Lim","doi":"10.9766/kimst.2022.25.2.177","DOIUrl":"https://doi.org/10.9766/kimst.2022.25.2.177","url":null,"abstract":"A network QoS model for the joint integrated C4I structure[1] was proposed for the integration of network infrastructure and network operations(NetOps) for NCOE. Detailed QoS requirements process of the joint integrated C4I systems are needs in the Multi-Domain Operation Environment(MDOE). A process is proposed for identifying QoS requirements and establishing in the MDOE using JMT(Joint Mission Thread) reference architecture and solution architecture. Mission analysis identify JCOAs(Joint Critical Operational Activities) and related activities based on JMT & System architecture's OVs, and Information analysis identify QoS attributes using System architecture's SVs. Identifying QoS attributes will be registered at PPS Registry by pre-regulated process, and will be set-up by NetOps. MDOE QoS requirement Process will support efficiently MUM-T and smart defense platform users under the future uncertain battlefield circumstances.","PeriodicalId":17292,"journal":{"name":"Journal of the Korea Institute of Military Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83381276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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