• Title, Summary, Keyword: Flight Route

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3-D Model-based UAV Path Generation for Visual Inspection of the Dome-type Nuclear Containment Building (UAV를 이용한 돔형 원자력 격납건물 외관조사를 위한 3차원 모델기반 비행 좌표 생성 방법)

  • Kim, Bong-Geun
    • Journal of KIBIM
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    • v.6 no.1
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    • pp.1-8
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    • 2016
  • This paper provides a method for generating flight path of Unmanned Aerial Vehicle (UAV) that is intended to be used in visual inspection of dome-type nuclear containment building. The method basically employs 3-D model to extract accurate location coordinates. Two basic route patterns that provide guide lines in defining moving locations were defined for each side wall and dome section of the containment. The route patterns support sequential capturing of images as well. In addition, several simple equations and an algorithm for calculation of the moving location on the route were developed on the basis of 3-D geometric characteristics of the containment building. A prototype computer program has been implemented to validate the proposed method, and a case study shows the method can visualize covering area in 3-D model as well.

Noise Analysis and Countermeasures of Training Aircraft(C172) According to Flight Course (비행경로에 따른 훈련용 항공기(C172)의 소음 분석 및 대책)

  • Jeon, Seung-Joon;Kim, Woo-Jin
    • The Journal of the Korea Contents Association
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    • v.18 no.6
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    • pp.235-242
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    • 2018
  • This study has been conducted for current situation of and countermeasures for aircraft noise. Aircraft noise is difficult to control, because of its wide-range effects, and it needs a great deal of funding for noise prevention like removal airport or land purchasing. And, in effort of determine whether aircraft noise can have health effects such as hearing loss, hypertension and psychological stress. This study, which uses of noise data around flight training airports in Korea, tries to understand and confirm related laws and regulations, and present civil application and situation of countermeasures. And, by measuring data of flight training airport, the situation of training aircraft noise problem have tried to confirm. To overcome these limitations and establish appropriate measures against noise, we made noise map with INM version 7.0, FAA aircraft noise prediction program, and evaluated aircraft noise. To overcome these limitations and establish appropriate measures against noise, we made noise map with INM version 7.0, FAA aircraft noise prediction program, and evaluated aircraft noise. In particular, the FAA's Integrated Noise Model(INM) is widely used by the civilian aviation community for evaluating aircraft noise impacts in the vicinity of airports. We analyzed noise impact by applying several scenarios. As these analysis, we suggest flight route without overlapping with residential area and without affecting flight safety.

The Colonizing Routes of Aphis gossypii (Hemiptera: Aphididae) to Mandarine Citrus Trees Grown in a Non-heating Plastic-film House During the Early Season (무가온 시설재배 감귤에서 계절초기 목화진딧물 개체군의 정착경로에 관한 연구)

  • Kim, Tae Ok;Kwon, Soon Hwa;Park, Jeong Hoon;Oh, Sung Oh;Hyun, Seung Young;Kim, Doog-Soon
    • Korean journal of applied entomology
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    • v.54 no.3
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    • pp.247-255
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    • 2015
  • The cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae) infests citrus orchards, causing sooty mold damage to the fruits. This study was conducted to investigate the colonizing route of A. gossypii in citrus orchards in a non-heating plastic-film house during the early season. The overwintering eggs of the aphids are frequently found on summer shoots of the citrus trees. The eggs were mostly those of Aphis citricola, without any A. gossypii when hatched. The colonization of citrus trees by alate A. gossypii in non-heating plastic-film houses was mainly observed twice, with advanced flight in late April and delayed flight in late May. The delayed flight was synchronized with the timing of the emergence of alate A. gossypii from the fundatrix generation in the holocyclic life cycle. During advanced flight in closed citrus orchards, alate A. gossypii were caught in yellow water traps installed in the fields, and the populations were found to originate from the surviving populations of the anholocyclic life cycle. Consequently, we concluded that citrus tree colonization with A. gossypii occurred during the advanced flight of the anholocyclic and the delayed flight of the holocyclic life cycle.

Object-Oriented Mission Modeling for Multiple Transport Aircraft

  • Zang, Jing;Liu, Hu;Liu, Tianping;Ni, Xianping
    • International Journal of Aeronautical and Space Sciences
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    • v.14 no.3
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    • pp.264-271
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    • 2013
  • A method of multiple transport-aircraft mission modeling is proposed in order to improve the efficiency of evaluating and optimizing pre-mission plans. To deal with the challenge of multiple transport-aircraft missions, the object-oriented modeling method is utilized. The elements of the mission are decomposed into objects and businesses, And the major mission objects and their important properties are summarized. A complex mission can be broken down into basic business modules such as the ground section and flight section. The business models of loading and fueling services in the ground section are described. The business model of the flight section is composed of an air route and flight profile with the flight equation and the fuel consumption model. The logical relationship of objects and business modules is introduced. The architecture of the simulation system, which includes a database, computation module, graphical user interface (GUI) module, and a result analysis module, is established. A sample case that includes two different plans is provided to verify the model's ability to achieve multi-aircraft composite mission simulation.

The design of Ground Flight Termination System for Space Launch Application (위성발사를 위한 지상국비행종단지령장비 설계)

  • Lee, Sung-Hee;Bae, Young-Jo;Oh, Chang-Yul;Lee, Hyo-Keun
    • Aerospace Engineering and Technology
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    • v.7 no.1
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    • pp.229-235
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    • 2008
  • The ground flight termination system(GFTS) could be used for the termination of launch vehicle in flight motion when the launch vehicle deviates from the designated route due to the system malfunction or failure as well as the launch vehicle can't be tracked by the ground tracking system. This paper introduces the basic concept and design of the ground flight termination system to be used for KSLV launch mission in NARO space center. In order to design the optimal ground flight termination system for KSLV launch application, the operational concept reflected on the flight trajectory and system characteristics of KSLV launch vehicle should be considered. Moreover the RF link budget analysis, and the analysis for system availability and reliability are done. Based on the analysis above, the each subsystem of ground flight termination to transmit the termination signal in stable is designed for KSLV launch mission.

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Considerations on In-Flight Validation for KASS (KASS 비행시험 및 검사 시 고려사항 분석)

  • Koo, Bon-Soo;Lee, Eun-Sung;Nam, Gi-Wook;Kang, Jae-Min;Cho, Jeong-Ho;Hong, Gyo-Young
    • The Journal of Advanced Navigation Technology
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    • v.19 no.3
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    • pp.175-181
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    • 2015
  • Method establishment needs for recent shortening the flight path, fuel reduction, reduction of the flight delay time, increase of the route capacity like as relieve congested airspace and solving future demand. However, As the existing conventional navigation systems is impossible to be resolved. Hereupon, SBAS has been developed with using the GNSS. ICAO has recommended that SBAS need to be operated with aircraft operation from 2025, korea is also developing KASS in accordance with the recommendation. In this paper, before the 2022 KASS will be completed, KASS can be expected using for flight test and inspection as analyzing KASS flight test and relative specifications.

Noise Analysis of Turbo Prop Aircraft(C90GT) (터보프롭 항공기(C90GT)의 소음 분석)

  • Ryu, Jong-Hyeon;Kim, Woo-Jin;Kim, Gyou-Beom
    • Journal of Convergence for Information Technology
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    • v.9 no.9
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    • pp.141-146
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    • 2019
  • The aircraft noise analysis area in this study is a training airfield where various kinds of aircraft are operated. It is difficult to identify the noise analysis as a real measurement in a training airfield. In order to overcome these practical limitations and to establish appropriate noise countermeasures, a noise map is prepared using the Integrated Noise Model Version 7.0 of the aircraft noise prediction program used by the FAA. The noise of C90GT aircraft was measured while flying the takeoff route, landing route, and long route. We want to identify areas where noise damage is more than 70 WECPNL. No area exceeding the legal standard of 70 WECPNL was found in all routes.

A Study on the Safe Separation of En-route Airway under altitude of 500 ft for the Flight Safety of Small UAVs (소형무인기 저고도 안전 비행을 위한 순항 경로 분리 간격 고찰)

  • Bae, Jung-Won;Lee, Sang-Jeong
    • 한국항공운항학회:학술대회논문집
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    • pp.39-47
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    • 2016
  • 150미터(500피트) 이하의 공역에서 무인기 택배 등의 활용을 목적으로 고속 비행이 요구되는 소형무인기(드론)의 순항을 가정하여 안전 분리 간격을 고려한 고속 비행 공역을 제안하고, 해당 경로에서 무인기간의 충돌방지를 위한 항법시스템의 성능요구조건과 안전한 분리 간격에 대한 선행 연구 분석과 고찰 결과를 제시한다.

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A Study on Attitude Estimation of UAV Using Image Processing (영상 처리를 이용한 UAV의 자세 추정에 관한 연구)

  • Paul, Quiroz;Hyeon, Ju-Ha;Moon, Yong-Ho;Ha, Seok-Wun
    • Journal of Convergence for Information Technology
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    • v.7 no.5
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    • pp.137-148
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    • 2017
  • Recently, researchers are actively addressed to utilize Unmanned Aerial Vehicles(UAV) for military and industry applications. One of these applications is to trace the preceding flight when it is necessary to track the route of the suspicious reconnaissance aircraft in secret, and it is necessary to estimate the attitude of the target flight such as Roll, Yaw, and Pitch angles in each instant. In this paper, we propose a method for estimating in real time the attitude of a target aircraft using the video information that is provide by an external camera of a following aircraft. Various image processing methods such as color space division, template matching, and statistical methods such as linear regression were applied to detect and estimate key points and Euler angles. As a result of comparing the X-plane flight data with the estimated flight data through the simulation experiment, it is shown that the proposed method can be an effective method to estimate the flight attitude information of the previous flight.

New Mathematical Model and Parallel Hybrid Genetic Algorithm for the Optimal Assignment of Strike packages to Targets (공격편대군-표적 최적 할당을 위한 수리모형 및 병렬 하이브리드 유전자 알고리즘)

  • Kim, Heungseob;Cho, Yongnam
    • Journal of the Korea Institute of Military Science and Technology
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    • v.20 no.4
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    • pp.566-578
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    • 2017
  • For optimizing the operation plan when strike packages attack multiple targets, this article suggests a new mathematical model and a parallel hybrid genetic algorithm (PHGA) as a solution methodology. In the model, a package can assault multiple targets on a sortie and permitted the use of mixed munitions for a target. Furthermore, because the survival probability of a package depends on a flight route, it is formulated as a mixed integer programming which is synthesized the models for vehicle routing and weapon-target assignment. The hybrid strategy of the solution method (PHGA) is also implemented by the separation of functions of a GA and an exact solution method using ILOG CPLEX. The GA searches the flight routes of packages, and CPLEX assigns the munitions of a package to the targets on its way. The parallelism enhances the likelihood seeking the optimal solution via the collaboration among the HGAs.