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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Society for Aviation and Aeronautics
Journal Basic Information
Journal DOI :
The Korean Society for Aviation and Aeronautics
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Volume & Issues
Volume 20, Issue 4 - Dec 2012
Volume 20, Issue 3 - Sep 2012
Volume 20, Issue 2 - Jun 2012
Volume 20, Issue 1 - Mar 2012
Selecting the target year
Searching through the Legal Requirements of Airfield`s Obstacle Limitation Surface for Extension of Goheung Aviation Test Center
Kim, Nan-Young ; Han, Chang-Hwan ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 1~7
DOI : 10.12985/ksaa.2012.20.3.001
Korea Aerospace Research Institute(KARI) has accomplished the planning study for setting up the mid-long term development plan of Goheung Aviation Test Center for the extensive use. In the future the aviation center will have a role of the complex center for the flight test, component test and R&D in Korea. KARI searches the legal requirements and informations for constructing the aviation test airfield in Goheung. Aviation law describes a lot of requirements to construct an airfield and the airfield also needs runway, equipments/facilities, obstacle limitation surfaces/distances, limitation altitudes and air space etc.. In this study the research results for the obstacle limitation Surface are mainly presented relating to the existing runway and the new large-scaled runway in Goheung.
A Study on Siting Criteria for GBAS Ground System
Jeong, Myeong-Sook ; Ko, Youri ; Choi, Chul Hee ; Ko, Wan-Jin ; Bae, Joongwon ; Jun, Hyang-Sig ; Kim, Dong-Min ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 8~15
DOI : 10.12985/ksaa.2012.20.3.008
Since the site chosen for GBAS ground system will have a direct effect on the performance of the GBAS, the GBAS ground system siting is mightily important in the GBAS installation process. Therefore, in this paper, the major equipment of the GBAS ground system is introduced and a formal process is described for the identification and evaluation of candidate GBAS sites. Also, this paper described detail siting requirements for the GBAS ground system such as reference receiver, VDB antenna and shelter respectively.
Error Analysis of Inter-Frequency Bias Estimation in Global Navigation Satellite System Signals
Kim, Jeongrae ; Noh, Jeong Ho ; Lee, Hyung Keun ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 16~21
DOI : 10.12985/ksaa.2012.20.3.016
Global navigation satellite systems (GNSS) use dual frequency signals to remove ionosphere delay effect. GNSS receivers have their own biases, called inter-frequency bias (IFB) between dual frequencies due to differential signal delays in receiving each frequency codes. The IFB degrades pseudo-range and ionosphere delay accuracies, and they must be accurately estimated. Simultaneous estimation of ionosphere map and IFB is applied in order to analyze the IFB estimation accuracy and variability. GPS network data in Korea is used to compute each receiver`s IFB. Accuracy changes due to ionosphere model changes is analyzed and the effect of external GNSS satellite IFB on the receiver IFB is analyzed.
VHF Relay Network for Long Air-to-Ground Communication in Oceanic Flight Routes
Koo, Jayeul ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 22~27
DOI : 10.12985/ksaa.2012.20.3.022
In oceanic flight routes, HF radio and satellite data links have been used for air-to-ground communication, but these systems have long propagation delay and low data throughput. In this paper, we propose a reliable system to overcome the weakness of current HF radio and satellite communication systems for oceanic aeronautical flight routes. The proposed scheme uses only one aeronautical VHF channel in multi-hop oceanic communication environments and supports a hybrid type of multiple access, which consists of random access and TDMA (Time Division Multiple Access) scheme. The proposed system improves performance on delay and throughput as an effective solution to communicate end-to-end on the oceanic flight routes and strengthens the reliability of oceanic aeronautical communication.
Alternative PNT Requirements and Technology Analysis
Jo, Sanghoon ; Kang, Seung-Eun ; Kang, Ja-Young ; Ko, Sangho ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 28~34
DOI : 10.12985/ksaa.2012.20.3.028
The recent transition to Performance Based Navigation in aviation enhances the accuracy of aircraft position, safety and efficiency in air traffic operations by using satellite-based navigation system such as GNSS. However, intentional interferences with GNSS signal as well as ones coming from natural phenomena such as solar storm increase. GNSS have very low power and therefore their signals are more susceptible to interferences than ground-based navigation signals. This paper introduces requirements of alternative positioning, navigation and timing(APNT) system and relevant technologies when the GNSS signals are not valid.
Configuration Management System for Rotorcraft Multi-Component Developement
Kim, Hyun-Gi ; Kim, Hwakbum ; Kim, Sungchan ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 35~43
DOI : 10.12985/ksaa.2012.20.3.035
Medium size rotorcraft consist of approximately 5,000 key components. The components must satisfy the target weight and performance requirement through optimization. Therefore a rotorcraft component has approximately 100 times higher unit cost for mass production than the equivalent of an automobile`s, along with huge development cost. Configuration management consists of four main parts : configuration identification, configuration control, configuration audit, and data management. In development programme, configuration management is one of the methods to save development cost, and setting a well-structured configuration management system according to the Military Standard is an important factor in success of the programme. The paper proposes a configuration management system suitable for development of various multi-use components development and presents that the configuration management was performed successfully during dual-use component development programme using the established system.
The Study for Vibro-acoustic Noise Analysis in the Fuselage of Regional Turboprop Airplane
Park, Illkyung ; Kim, Sungjoon ; Jung, Jinduck ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 44~50
DOI : 10.12985/ksaa.2012.20.3.044
The noise reduction is important one of considerations in the process of a civil aircraft development program. External noise sources are classified into an air-born source and a structure-born source. Among these noise sources, the most affected noise source into a cabin is the air-born noise source from an engine or propeller. The external noise is transmitted into the cabin through the fuselage structure of airplane which are composed of an fuselage structure, an interior trim panel and an acoustic insulation layer between an fuselage structure and an interior trim panel. Therefore, appropriate fuselage structure and acoustic insulation layer is very important to reduce the internal noise level. In this paper, the vibro-acoustic coupled analysis of the cabin noise of the 80~90 seats regional turboprop aircraft is carried out to validate the acoustic analysis method using Direct BEM and FEM. The sound pressure level onto the fuselage skin is acquired by fan-source noise analysis using BEM, and which sound pressure is used as acoustic noise source in vibro-acoustic noise analysis for cabin noise analysis using FEM.
Matrix Structure Reliability Analysis using AFORM
Lee, Seung-Gyu ; Kim, Tae-Uk ; Kim, Sung-Chan ; Ahn, Lee-Ki ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 51~56
DOI : 10.12985/ksaa.2012.20.3.051
The wing is a framework composed chiefly of skin, spars, ribs and can be simplified by matrix structure. In this paper, a displacement reliability of matrix structure is analysed by AFORM(Advanced First Order Reliability Method) and applicability is assessed.
The Study on the Flight Route of linked Airparks for LSA
Shin, Dai-Won ; Im, Sauk-Hoon ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 57~62
DOI : 10.12985/ksaa.2012.20.3.057
In this study, changes depending on the Airparks for LSA(Light Sport Aircraft) and Ultralight vehicle flight restricted areas, the flight route for LSA in Korea was redesigned. Considerations for LSA operating limits of VFR and complex airspace conditions in Korea, and that links the Airparks for LSA is to redesign the proposed.
Histopathological alterations of the rat myocardium under simulated microgravity
Kim, Hyun-Soo ; Kim, Youn Wha ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 63~67
DOI : 10.12985/ksaa.2012.20.3.063
Spaceflight induces a number of cardiovascular physiological alterations. To study adaptations to microgravity on Earth, the tail-suspended, hindlimb-unloaded rat model has been used to simulate the effects of microgravity. Despite the extensive use of this model to infer physiological adaptations of many organs to microgravity, little information has been obtained on the effect of tail suspension(TS) on cardiac adaptations in the rat. This study was aimed to investigate the effects of simulated microgravity on the rat myocardium using the TS model. Twenty-four male Sprague-Dawley rats were randomly assigned to 3 experimental groups(1, 7 and 14 days of TS) and a control group. A microscopic examination was performed to assess histopathological changes in the myocardial morphology. The hearts from the control group, the 1 day-TS rats and the 7 day-TS rats revealed no evident abnormalities in cardiomyocyte size and morphology. At day 14 of TS, in contrast, the ventricular cardiomyocytes appeared more separated from each other and were slightly smaller in size compared with those of the control group. Also seen were scattered areas exhibiting focal disorganization of muscle fibers and some degenerating cardiomyocytes, of which the nuclei had become pyknotic or disappeared. In this study, we demonstrated that the ventricular cardiomyocytes underwent degeneration and atrophy at the microscopic level during exposure to simulated microgravity in TS rats.
Establishing the Importance Weights of Pilot;s Fatigue Factors through AHP analysis
Moon, Woo-Choon ; Kang, Woo-Jung ; Choi, Youn-Chul ; Kim, Woong-Yi ; Lee, Koo-Hee ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 68~75
DOI : 10.12985/ksaa.2012.20.3.068
The traditional regulatory approach to managing pilots fatigue has been to prescribe limits on maximum daily, monthly, and yearly flight and duty hours, and require minimum breaks within and between duty periods. This approach comes from a long history of limits on working hours dating back to the industrial revolution. So, the Council of ICAO recently adopted International Commercial Air Transport regarding the development and implementation of fatigue risk management systems(FRMS). The FRMS can provide better safety outcomes than current prescriptive flight and duty regulations while allowing greater operational flexibility. This study aim to analyzing relative importance of pilots` fatigue factors in order to minimize pilots` fatigue-related safety risks. More researches regarding monitoring and managing fatigue, based upon scientific principles, are required in the future.
An Empirical Research on the Job Adaptation of Foreign Cabin Crews in a National Carrier
Jang, Ji Seung ; Lee, Nam Ryung ; Kim, Tae Joon ; Kim, Seung Bok ;
Journal of the Korean Society for Aviation and Aeronautics, volume 20, issue 3, 2012, Pages 76~89
DOI : 10.12985/ksaa.2012.20.3.076
The number of foreign cabin crews consist of 7% of total crews in K-airline, of which Chinese crews are of 38%. The number of foreign crews are 433 from 10 countries as of the end of July 2012. The airline has continued to hire foreign cabin crews to increase efficiency of human resourcing qualified flight attendants. This paper tried to do empirical research through SEM(Structural Equation Model) to overview confirmatory factors and course effects integrally. Cultural stress, aggressive coping, social support and job adaption have been chosen to be a factors. Especially, the SEM was set to show indirect effects of cultural stress and aggressive coping through social support to the dependant variable, job adaptation. According to the analysis result, cultural stress has a direct negative effect on job adaptation. Aggressive coping has also a direct positive effect on job adaptation. It has also proven cultural stress and aggressive coping has a indirect effect to job adaptation through social support. This paper is expect to contribute to develop such training and administrative programs as enhancing foreign crews` job adaptability and managing them effectively.