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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Society for Aviation and Aeronautics
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Journal DOI :
The Korean Society for Aviation and Aeronautics
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Volume & Issues
Volume 24, Issue 2 - Jun 2016
Volume 24, Issue 1 - Mar 2016
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Integration Algorithm of GPS/SDINS/ST for a Space Navigation
Yi, Chang-Yong ; Cho, Kyeum-Rae ; Lee, Dae-Woo ; Cho, Yun-Cheol ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 1~10
DOI : 10.12985/ksaa.2016.24.2.001
A GPS/SDINS/ST(Star Tracker) integrated sensor algorithm is more robust than the GPS/SDINS and the ST/SDINS systems on exploration of other planets. Most of the advanced studies shown that GPS/SDINS/ST integrated sensor with centralized Kalman filter was more accurate than those 2 integrated systems. The system, however, consist of a single filter, it is vulnerable to defects on failed data. To improve the problem, we work out a study using federated Kalman filter(No-Reset mode) and centralized Kalman filter with adaptive measurement fusion which known as robustness on fault. The simulation results show that the debasing influences are reduced and the computation is enable at least 100Hz. Further researches that the initial calibration in accordance with observability and applying the exploration trajectory are needed.
A Long-term Accuracy Analysis of the GPS Klobuchar Ionosphere Model
Kim, Mingyu ; Kim, Jeongrae ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 11~18
DOI : 10.12985/ksaa.2016.24.2.011
Global Positioning System (GPS) is currently widely used for aviation applications. Single-frequency GPS receivers are highly affected by the ionospheric delay error, and the ionospheric delay should be corrected for accurate positioning. Single-frequency GPS receivers use the Klobuchar model, whose model parameters are transmitted from GPS satellites. In this paper, the long-term accuracy of the Klobuchar model from 2002 to 2014 is analyzed. The IGS global ionosphere map is considered as true ionospheric delay, and hourly, seasonal, and geographical error variations are analyzed. Histogram of the ionospheric delay error is also analyzed. The influence of solar and geomagnetic activity on the Klobuchar model error is analyzed, and the Klobuchar model error is highly correlated with solar activity. The results show that the Klobuchar model estimates 8 total electron content unit (TECU) over the true ionosphere delay in average. The Klobuchar model error is greater than 12 TECU within
latitude, and the error is less than 6 TECU at high latitude.
Positional Stability Analysis of Trailing Aircraft in Formation Flight
Cho, Hwan Kee ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 19~24
DOI : 10.12985/ksaa.2016.24.2.019
Positional stability analysis based on aerodynamic forces and induced moments of formation flight using two small aircraft models is presented. The aerodynamic force and moments of the trailing aircraft are analyzed in the aspect of flight stability. The induced moments with the change of local flow direction by wing-tip vortex from the leading aircraft can affect the flight positional stability of aircraft in closed formation flight. Aerodynamic forces and moments of trailing aircraft model are measured by 6-component internal balance at the 49 locations with vertical and lateral space between two aircraft models. Results are shown that the positional stability of trailing aircraft in formation flight can be analyzed by positional stability derivatives with vertical and lateral space. It is concluded that flying positions can be important factors for aircraft position stability due to induced aerodynamic force and moments with vertical and lateral spacing by the variation of flow pattern from the leading aircraft in formation flight.
A Case Study on Application of Obstacle Limitation Criteria for Specific Conditions of Airports
Kim, DoHyun ; Kim, Woong Yi ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 25~30
DOI : 10.12985/ksaa.2016.24.2.025
Obstacle defines all fixed and mobile objects, or parts thereof, that are located on an area intended for the surface movement of aircraft or extend above a defined surface intended to protect aircraft in flight or stand outside those defined surfaces and that have been assessed as being a hazard to air navigation. The airspace around airports are maintained free from obstacles so as to permit the intended aeroplane operations at the airports to be conducted safely and to prevent the airports from becoming unusable by the growth of obstacles around the airports. This is achieved by establishing a series of obstacle limitation surfaces or airspace imaginary surfaces that define the limits to which objects may project into the airspace. This is a case study that shows an application of obstacle limitation criteria, which must be maintained free from an critical obstacle, for specific conditions of two airports. For the purpose of the application, aeronautical studies/flight safety influence assessments were used to identify possible solutions and select a solution that is acceptable without degrading aviation safety.
The Effects of Human Touch on Turnover Intention of Airport Ground Handling Employees
Lee, Min-Hoo ; Lee, Yung-Kil ; Kim, Ki-Woong ; Choi, Youn-Chul ; Park, Sung-Sik ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 31~46
DOI : 10.12985/ksaa.2016.24.2.031
The purpose of this study is to examine the effects of human touch on turnover intention of ground handling employees at airport. Additionally, this study examines a comprehensive mediating effect of the work schedule and workload between human touch and turnover intention. To examine them, over 700 ground handling employees from six international airports of South Korea were surveyed using the simple random sampling method. The instrument for data collection was a questionnaire, and it was developed based on previous research results. The methodology adopted in this study is the structural equation modeling (SEM). According to SEM analysis, it was proven that both psychological and physical human touch have a significant effect on turnover intention of the employees. Work schedule played a mediating role among all three factors of human touch and turnover intention. However, workload has a mediating effect only between communication human touch and turnover intention. Based on the above findings, theoretical and practical implications are also discussed.
The Effect of the Cabin Service Quality on Customer Loyalty and Airline Image
Wang, Soo-Myung ; Park, Hye-Yoon ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 47~58
DOI : 10.12985/ksaa.2016.24.2.047
The cabin service quality expected by customers during the air travel can be the top priority to choose an airline. Customers' perception about cabin service quality evaluation are important for developing differentiated cabin service strategies of airlines, so this study aims to analyze the effect of the cabin service quality on airline image and customer loyalty. For achieving this purpose, literature study and empirical study on cabin service, customer loyalty and airline image were performed together. As a results of research, a high level of the cabin service quality provided by airlines significantly influenced positive images of airlines and customer loyalty. And customers' positive image towards airlines practically had a substantial influence on the improvement of customer loyalty. These study results would help in creating positive images of airlines and securing customer loyalty by developing differentiated and improved cabin service quality strategies of each airline in the limitless competition of the aviation service industry.
A Structural Design of Aviation Safety Inspection Checklist for Safety Information Analysis and Safety Risk Assessment
Choi, Dongwook ; Choi, Soonji ; Choi, Young J. ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 59~67
DOI : 10.12985/ksaa.2016.24.2.059
The checklist currently used for Aviation safety inspection performed by ASIs consists of inspection groups and multiple items, it does not have structured hierarchy system which required to efficiently process aviation safety analysis. On this study, through mapping taxonomy of HFACS onto current checklist to secure structured hierarchy system and present a specification on systematic frequency and severity to perform safety risk assessment of detected hazard.
Study on Importance of Safety Management Factors in Aircraft Using Business
Byeon, A-Reum ; Cho, Young-Jin ; Choi, Youn-Chul ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 68~73
DOI : 10.12985/ksaa.2016.24.2.068
2016, in total 53 corporations operate 160 aircraft. Since 2000, 52 accidents occurred in these corporations. This number takes 20.2% out of in total 257 accidents. Especially in 2016, in two(2) accidents, two(2) aircraft and people onboard were damaged. According to accident reports of aircraft using service, in most cases actions against common sense were connected to accidents. This means that attentions of managers or pilot would have protected accidents. On the basis of such background, this research analyses accidents cases of corporations operating aircraft by utilizing ahp. According to this anlysis, unlike scheduled and unscheduled airlines, pilots in command (0.109) and assisting crew (0.105) in Liveware have taken the most importance. Operational procedure (0.100) in Software and a controlling system (0.086) in Hardware have shown the second most importance. This result demonstrates that in case of corporations operating aircraft require safety management at different level than airlines.
A Study on Implementation Trend of Aviation System Block Upgrades(1)
Park, Bomi ; Kim, Jun-hyuk ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 74~80
DOI : 10.12985/ksaa.2016.24.2.074
Development of air navigation and avionics technologies led to solve the problems that conventional ATM system had. The International Civil Aviation Organization developed the Aviation System Block Upgrades (ASBU) initiative in order to harmonize global ATM planning and technology upgrades and urged to implement the recommendations for the member States. The ASBUs provide the road map to assist air navigation service providers in the development of their individual strategic plans and investment decisions. In this paper, the operational concepts in 2 performance improvement areas, Airport Operations and Globally Interoperable System and Data in ASBUs, have been summarized. In Airport Operations area the new management technologies and required systems are presented for optimizing the traffic flow in airport area and terminal airspace. Data format standards and required systems presented for information integration and usage of the new system under Globally Interoperable System and Data area.
A Study on Safety of Airborne Software and Considerations during Development
Yi, Baeckjun ; Choi, Jong Yeoun ; Nam, Gi Wook ;
Journal of the Korean Society for Aviation and Aeronautics, volume 24, issue 2, 2016, Pages 81~85
DOI : 10.12985/ksaa.2016.24.2.081
It is recognized that safety is a key point of technical competency. Its adoption is widely spread in development of products and it is essentially necessary in aerospace industry because airborne system and equipment are used complex high-technology and implemented systematic performance using software. This study reviews system safety assessment, development assurance level, airborne software, RTCA DO-178 process, and considerations & pitfalls in software development.