• 한국군사과학기술학회지
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• 제13권6호
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• pp.1099-1105
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• 2010

The purpose of this paper is to propose a methodology that can estimate optimal requirement of attack helicopter Korea army will be operating in future. For estimating optimal requirement, attack helicopter's operation concept, performance, battlefield environment and enemy threat are considered. We use a wargame model, AAsim(Army Aviation simulation), as a analytic simulation model which is used to analyze DOTMLPF and operation in army aviation field. In this paper, we conduct battle experiment for anti armored corps operation which reflects attack helicopter's combat effectiveness very well. As a result of simulation, the destructive rate for enemy armored corps per each attack helicopter can be calculated. In this paper, we propose optimal requirement of attack helicopter using that destructive rate for enemy armored corps.

• Advances in aircraft and spacecraft science
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• 제4권1호
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• pp.37-52
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• 2017

Gas turbines operating in dusty or sandy environment polluted with micron-sized solid particles are highly prone to blade surface erosion damage in compressor stages and molten sand attack in the hot-sections of turbine stages. Commercial/Military fixed-wing aircraft engines and helicopter engines often have to operate over sandy terrains in the middle eastern countries or in volcanic zones; on the other hand gas turbines in marine applications are subjected to salt spray, while the coal-burning industrial power generation turbines are subjected to fly-ash. The presence of solid particles in the working fluid medium has an adverse effect on the durability of these engines as well as performance. Typical turbine blade damages include blade coating wear, sand glazing, Calcia-Magnesia-Alumina-Silicate (CMAS) attack, oxidation, plugged cooling holes, all of which can cause rapid performance deterioration including loss of aircraft. The focus of this research work is to simulate particle-surface kinetic interaction on typical turbomachinery material targets using non-linear dynamic impact analysis. The objective of this research is to understand the interfacial kinetic behaviors that can provide insights into the physics of particle interactions and to enable leap ahead technologies in material choices and to develop sand-phobic thermal barrier coatings for turbine blades. This paper outlines the research efforts at the U.S Army Research Laboratory to come up with novel turbine blade multifunctional protective coatings that are sand-phobic, sand impact wear resistant, as well as have very low thermal conductivity for improved performance of future gas turbine engines. The research scope includes development of protective coatings for both nickel-based super alloys and ceramic matrix composites.

• 한국시뮬레이션학회논문지
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• 제23권2호
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• pp.47-55
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• 2014

한국군의 분석용 시뮬레이션모델을 포함한 대개의 전투시뮬레이션 모델들은 통합화력과 같은 복잡한 전투상황을 모델링, 분석하기에는 어려움이 많다. 본 연구에서는 Fire Eagle과 같은 지상화력과 육군항공의 통합화력전투훈련의 분석을 위한 모델링 및 시뮬레이션 요구사항을 분석한다. 이에 기반하여 Fire Eagle을 위한 시뮬레이션 모델을 제안, 개발하고 통합화력을 개선하기 위한 전략을 도출한다. 이 시뮬레이션 모델을 이용하여 특정 작전계획 및 시나리오의 효과성을 분석한다. 이 시뮬레이션 실험 결과를 바탕으로 효율적이고 효과적인 작전계획을 개발하는 시범을 보인다.

• 산업경영시스템학회지
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• 제43권4호
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• pp.150-160
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• 2020

In this paper, we introduce a pilot's scheduling model which is able to maintain and balance their capabilities for each relevant skill level in military helicopter squadron. Flight scheduler has to consider many factors related pilot's flight information and spends a lot of times and efforts for flight planning without scientific process depending on his/her own capability and experience. This model reflected overall characteristics that include pilot's progression by basis monthly and cumulative flight hours, operational recent flight data and quickly find out a pinpoint areas of concern with respect to their mission subjects etc. There also include essential several constraints, such as personnel qualifications, and Army helicopter training policy's constraints such as regulations and guidelines. We presented binary Integer Programming (IP) mathematical formulation for optimization and demonstrated its effectiveness by comparisons of real schedule versus model's solution to several cases experimental scenarios and greedy random simulation model. The model made the schedule in less than 30 minutes, including the data preprocessing process, and the results of the allocation were more equal than the actual one. This makes it possible to reduce the workload of the scheduler and effectively manages the pilot's skills. We expect to set up and improve better flight planning and combat readiness in Korea Army aviation.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.1-6
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• 2022

In this paper, we will present the realization of a facial recognition system using the ESP32-CAM board controlled by an Arduino board. The goal is to monitor a remote location in real time via a camera that is integrated into the ESP32 IOT board. The acquired images will be recorded on a memory card and at the same time transmitted to a pc (a web server). The development of this remote monitoring system is to create an alternative between security, reception, and transmission of information to act accordingly. The simulation results of our proposed application of the facial recognition domain are very efficient and satisfying in real time.

• 한국시뮬레이션학회논문지
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• 제19권3호
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• pp.63-70
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• 2010

본 연구의 목적은 미래 한국 육군이 운영할 공격헬기의 전투효과를 산출하는 방법론을 제시하는 것이다. 본 연구에서 적용한 전투 효과 산출방법은 첫째, 육군항공분야의 작전계획과 전투발전 분야별 요소인 DOTMLPF 분석에 활용되는 분석용 워게임 모델인 육군항공분석모델을 사용하였으며, 둘째, 전문가 의견을 기반으로 한 AHP기법을 사용하였다. 이 때, 시뮬레이션 및 AHP 기법 적용시 공격헬기의 전투효과를 가장 잘 반영할 수 있는 대 기갑작전을 고려하였다. 연구결과, 공격헬기의 기종별 전투효과를 산출할 수 있었으며, 이러한 전투효과도는 신규 무기체계 획득시 기종선정이나 수량결정과 같은 의사결정시 의사결정자가 합리적으로 의사결정을 할 수 있게 하는 데 유용할 것으로 판단된다.

• 한국항공운항학회지
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• 제29권1호
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• pp.30-37
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• 2021

This study wanted to confirm whether the DiSC behavior types of student pilots and instructors in the training course of Helicopter pilots affect the flight training achievement. The results of the study are as follows. First, in the distribution of DiSC behavior types of student pilots and instructors, student pilots had the largest number of Dominance with 40.2 percent, while Instructors had the highest number of conscientiousness with 46.5 percent. Second, it was analyzed that the flight training achievement was influenced by the behavior type of student pilots. In basic flight and aircraft type conversion flight, Steadiness had the highest achievement in flight training, and in tactical flight, conscientiousness was the highest. Third, the behavior patterns of student pilots and instructors have been confirmed to have interaction effects in tactical flight.

• 한국항공운항학회지
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• 제31권1호
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• pp.1-10
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• 2023

This study investigated the accident cases of the U.S. Air Force and the R.O.K. Army. It analyzed the accident factors of the unmanned aircraft system using case analysis on unmanned aircraft system operators of the R.O.K. Air Force. Following the analysis this paper suggested safety operation plans for the R.O.K. Air Force. The risk factors of unmanned aircraft system were summarized by collecting and analyzing accident cases of unmanned aircraft system by the U.S. Air Force, collecting and analyzing accident risk factors of RQ-4 operators of the R.O.K. Air Force. Through the analyzed risk factors, a safety operation plan for the semi-automatic unmanned aircraft system and the fully automatic unmanned aircraft system was presented.

• 한국항공운항학회지
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• 제28권1호
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• pp.75-82
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• 2020

To compare and analyze the differences between flight simulation and actual flight among 130 army helicopter pilot training subjects, the correlation analysis was performed first through t-testing and multiple regression analysis of individual characteristics and flight simulation and actual instrument flight training, which were analyzed significantly in the age (a3) and service classification (a5) of the six verification factors. This has been shown to be significant, with no difference between the flight simulator and the actual flight. Second, in order to study the correlation between aircraft types, the flight evaluation (v1) was analyzed as a dependent variable for the performance of the flight simulator (KUH: s2, UH60: s3, AH-1S: s5, UH-1H: s6), and the results of the multiple regression analysis of the flight simulator evaluation (s1) were analyzed, in contrast, as a dependent variable, and in conclusion, the training of the flight simulator provided statistical data on the possibility of replacing the actual flight training, which is thought to contribute to the orientation, budget reduction and aviation safety of the pilot training.

• 한국항공운항학회지
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• 제28권3호
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• pp.74-83
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• 2020

Securing excellent pilots is not only directly linked to the military's improved combat capabilities, but also a way to minimize human and property losses from aircraft accidents. Therefore, a scientific method is needed to diagnose pilot aptitude from the pilot selection process and select those with high accident potential, those who are dropped out of the flight training process, and those who are not suitable for pilot life in advance. Developed countries have implemented pilot aptitude tests to solve these problems early on, but so far, the Korean Army has not introduced a pilot aptitude test system that uses diagnostic tools in the helicopter pilot selection process. Therefore, in this study, scientific diagnostic tools are developed for selecting helicopter pilots, and through this, it is predicted that the number of people who are likely to be dropped out of the training course and who have the potential for accidents will be selected in advance and eliminated in the selection process. In this context, prior research examined the key factors involved in the pilot aptitude test. Through this, the aptitude test items were developed and aptitude tests were conducted on student pilots currently in flight training, and the results of flight training were analyzed.