• Journal of Aerospace System Engineering
• /
• v.17 no.2
• /
• pp.103-110
• /
• 2023

In order for future UAVs to be used as means of transportation, a simulation environment in which they can be tested in advance is essential. Accordingly, to demonstrate future air transport systems among six future industries of Chungcheongbuk-do, a simulation environment was condensed and built, focusing on virtual safety corridor connecting Osong Station and Cheongju Airport.

• Current Industrial and Technological Trends in Aerospace
• /
• v.5 no.1
• /
• pp.15-24
• /
• 2007

항공용 소프트웨어의 개발 및 인증은 현재까지 국내에서는 거의 경험이 없는 분야이다. 물론 각종 무인기 등의 개발사업을 통해 항공용 소프트웨어를 개발하고 시험한 사례는 다수 있으나, 체계적으로 개발 및 시험된 경우는 흔치 않다. 특히 유인기 분야에서는 거의 전무하다고 할 수 있다. KFP, KT-1, T-50 등의 군 사업을 통하여, 국외에서 개발된 소프트웨어에 대한 유지보수 경험 및 인력과, 이를 위한 체계가 구축되어 있는 정도라 할 수 있다. 이러한 상황에서, 이제는 항공용 소프트웨어를 국내에서 개발하고 시험, 인증할 수 있는 능력의 확보가 요구되고 있으며, 이는 국내 항공산업이 항공기 독자개발 능력 확보를 위해서는 필수적인 핵심기술이다. 이러한 기술력 확보를 위하여, 현재 항공용 소프트웨어 개발과 관련한 세계적인 흐름 및 최신의 기술동향을 파악하는 것이 무엇보다 필요하다. 항공선진국에서 이미 적용하지 않는 규격, 기술, 개발방식을 그대로 따라하는 과정을 거친다면, 경쟁력 확보는 요원한 일이기 때문이다. 따라서 본 논문에서는 항공용 소프트웨어 인증을 위한 규격의 역사 및 종류와, 현재 주로 적용되고 있는 DO-178B에 대한 주요 내용 및 현안에 대하여 살펴보고, 소프트웨어 개발과 관련한 소프트웨어 툴, 모델기반 개발 방식 등 해외 선진업체 및 기관들의 최신 기술동향을 정리하였다.

• Korean Security Journal
• /
• no.58
• /
• pp.35-58
• /
• 2019

Drone was originally developed for air force aircraft or missile exercise shooting targets, and is being considered as the entire unmanned aircraft to the public. The core concept of a drone can be divided into 'unmanned' and 'aircraft'. However, there are many questions about whether the Fourth Industrial Revolution, expressed as a convergence scientific innovation, is appropriate at a time when smart cities are proposed as a concept of new urban spatial formation, and the role of self-driving vehicles, including drones, is being emphasized within the new urban integrated transport system. In this study, the concept of the existing drones was analyzed for the development process, definitions in each country's laws, and the results of the preceding research to present a concept suitable for future society and a unified term. It is not desirable to define a drone for the purpose of a country, an institution, or an operating entity, depending on the circumstances of the era. It is more reasonable to find the concept of a drone based on human life than in the traditional way, and more reasonable considering the development of the drones in the future. Subsequent studies should be more detailed, more data and research results analyzed, and discussed areas that were not covered in this study. Based on this, research should also be conducted on a variety of topics, including legislation, preparation of operational regulations, and related industrial processes and regulations.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.43 no.6
• /
• pp.540-547
• /
• 2015

This paper describes development contents and flight tests of an ACMI simulator based on LVC integrating architecture. ACMI is the system that provides air combat training and ground bombing training for improving fighting efficiency, that is the live simulation involving real people to operate real systems. ACMI simulator was developed for technic acquisition of LVC interoperability by using data link communication. ACMI simulator simulated maneuvering of a fighter by operating an UAV, a fighter can be distinguished from an UAV by maneuvering characteristics. This study proposes maneuvering simulation method by using flight data of the UAV, and performed its flight test for verifying similarity of fighter maneuvering.

• The Journal of the Korea Contents Association
• /
• v.19 no.3
• /
• pp.261-274
• /
• 2019

This paper aims to develop an appropriate methodology for establishing an investment strategy for 'demonstration of artificial rainfall technology using UAV' and that include establishment of a technology classification, set of indicators for technology evaluation, suggestion of final key technology as a whole study area. It is designed to complement the latest research trend analysis results and expert committee opinions using quantitative analysis. The key indicators for technology evaluation consisted of three major items (activity, technology, marketability) and 10 detailed indicators. The AHP questionnaire was conducted to analyze the importance of indicators. As a result, it was analyzed that the attribute of the technology itself is most important, and the order of closeness to the implementation of the core function (centrality), feasibility (feasibility). Among the 16 technology groups, top investment priority groups were analyzed as ground seeding, artificial rainfall verification, spreading and diffusion of seeding material, artificial rainfall numerical modeling, and UAV sensor technology.

• Proceedings of the Korean Society of Propulsion Engineers Conference
• /
• 2010.11a
• /
• pp.548-551
• /
• 2010

A 150 lbf-thrust class micro turbojet engine has been developed. The engine could be applied to power plant for small aviation vehicle such as UAV, decoy and anti-radar missile and was designed with concepts that has small size, low-cost and high performance. A prototype was manufactured and performed the ground static test and high altitude test. This paper outlines the features and layout of 150 lbf turbojet engine and also describes the design characteristics and test results of the engine and components.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.25 no.2
• /
• pp.125-134
• /
• 2022

Recently, there are an increased the number of reports on the misuse or malicious use of an UAS. Thus, many researchers are studying on defense schemes for UAS by developing or improving C-UAS sensor technology. However, the wrong placement of sensors may lead to a defense failure since the proper placement of sensors is critical for UAS defense. In this study, a multi-object optimization model for C-UAS sensor placement in an air base is proposed. To address the issue, we define two objective functions: the intersection ratio of interested area and the minimum detection range and try to find the optimized placement of sensors that maximizes the two functions. C-UAS placement model is designed using a NSGA-II algorithm, and through experiments and analyses the possibility of its optimization is verified.

• Journal of Korean Society for Geospatial Information Science
• /
• v.23 no.3
• /
• pp.57-67
• /
• 2015

Land characteristics should be surveyed in an accurate and objective manner as they are important data to the formation of land prices. The ambiguous survey and estimation guidelines, however, make it possible for surveyors to intervene with their subjective judgments. There is thus a definite need for improvement. It is also extremely important to survey the characteristics of individual land lots in an accurate and objective manner in order to estimate officially assessed land prices in a swift and accurate way. For objective land appraisal and evaluation, this study set out to objectively identify the characteristics of lots according to various topographical conditions by using UAV based high quality geospatial information, panorama VR images, and GIS analysis technique and thus make a contribution to a rational and consistent estimation system of officially assessed land prices. Trying to assess the technique proposed in the study, the investigator analyzed the old data about the officially assessed land prices of the subject areas and then the evaluation data of certified public appraisers.

• Journal of the military operations research society of Korea
• /
• v.37 no.1
• /
• pp.119-128
• /
• 2011

This paper deals with a study on mission analysis considering the effectiveness measurement of UAV system operations. This mission analysis process is composed of 5 steps; (1) creation of a base model in MANA, (2) design of input parameter set using experiment design, (3) mapping input parameter set to the MANA scenario file, (4) data farming and model run in batch process, and (5) statistical analysis of the simulation result. In the result of this study, the effect of input parameter to the dependent parameter was shown to decrease in the order classification range, sweep width, height, speed, FOV(Field of view), and classification probability. The study also shows that the operational effectiveness of an improved scenario proposed can increase 10.2% from the base scenario.

• The Korean Journal of Air & Space Law and Policy
• /
• v.28 no.1
• /
• pp.55-71
• /
• 2013

By aircraft from Aviation regulations and institutional regulatory framework for ensuring the safety is secured. State-of-the-art aircraft, according to the type of development and diversification, modernization and new types of aircraft are operated. In particular, light aircraft and ultralight flying device such as the gyro-plane and unmanned flying devices is introduced a new device, and the device operates at these flight in accordance with the standards of the Aviation Act regulations may not occur often. Variety of light aircraft and ultra-light aircraft assembly, can be adapted for a person engaged in the business of aviation safety management and to perform the legal basis was established. Depending on the classification of newly introduced aircraft, the biggest change is the introduction of the concept of the LSA. In Korea, the various light aircraft are operating, but these aircraft range not clearly Aviation Regulations had difficulty in ensuring safety. This study examined the differences between international rules and regulations of Korea about the classification of aircraft. The LSA are included in aircraft categories internationally, but LSA will not be included in the aircraft categories, which is one of a range of powered flight device exists in Korea Aviation Act. Limit for maximum continuous power speed in a LSA, it is a limit on the right of the people who want using the high-performance plane. Also it is an international trend does not fit in, and is consistent with the intent of LSA manufacturer. Delete the content from a range of future aviation law revisions and light aircraft-related provisions to limit the maximum continuous power speed is considered to be suitable for the purpose of introducing the light aircraft industry. The laws and regulations set up in order to ensure the safety of ultralight aircraft categories existing in ultralight aircraft that exceeds the purpose of the introduction of LSA technology development at home and abroad, and is intended to reflect. These standards complement of aircraft operation is not appropriate for the situation unless the country is difficult to ensure the safety of operations. Also developed in other countries, the introduction of aircraft operating in the country, so many problems occur early revision is required.