Go to the main menu
Skip to content
Go to bottom
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
Editor in Chief :
Volume & Issues
Volume 23, Issue 4 - Dec 2015
Volume 23, Issue 3 - Sep 2015
Volume 23, Issue 2 - Jun 2015
Volume 23, Issue 1 - Mar 2015
Selecting the target year
Effect of Diaphragm Thickness on Regression Rate Improvement in Hybrid Rocket Motor
Ryu, Sung-Hoon ; Oh, Ji-Sung ; Moon, Keun-Hwan ; Kim, Hak-Chul ; Moon, Hee-Jang ; Kim, Jin-Kon ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 1~5
DOI : 10.12985/ksaa.2015.23.4.001
In this work, a study was conducted to investigate the effect of diaphragm thickness on the regression rate of the hybrid rocket motor. To observe the flow pattern and the recirculation zone, visualizations of combustion chambers with different diaphragm thickness (5mm, 10mm) were performed. It was found that the case with 5 mm thickness had a larger recirculation zone and therefore, had a higher regression rate than the case with 10mm thickness due to the increased residence time and heat transfer toward the fuel surface. Finally, it was concluded that the thickness of diaphragm can be a critical parameter for the enhancement of the regression rate.
Analysis of ADS-B ground trajectory data using non-aviation approval public data
Ku, SungKwan ; Baik, Hojong ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 6~11
DOI : 10.12985/ksaa.2015.23.4.006
In this study, we surveyed analysis of ADS-B ground trajectory data using non-aviation approval public data. For analysis used non-aviation public data and commercial ADS-B receiver. The study result is available using ADS-B ground trajectory data for airfield surveillance on limited range. Also, to confirmed of available using non-aviation public data for aviation research.
A Study on Resolving the Radar Blind Sector in Jeju region
Moon, Woo-Choon ; Jung, Hyun-Tae ; Kim, Bo Young ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 12~21
DOI : 10.12985/ksaa.2015.23.4.012
Due to the influence of Han-la Mountain which is located at the center of Jeju Island, a radar blind sector has been appearing in the south-east, low-altitude area of Jeju Island. Thus, the region is perilous for aircraft using surveillance in this area with the existing radar equipment that is currently available. In addition, as the popularity for domestic leisure aviation is on the rise, the safety in low-altitude area should be guaranteed. Where not only IFR flights but also VFR flights are mainly used. Therefore, immediate measures to the present state of radar blind sector in Jeju Island should be taken into serious account. Regarding the circumstances, this study's purpose is to help secure the aviation safety in Jeju region by analyzing the current air traffic surveillance system in Jeju Island and comprehending its vulnerable factors. Moreover, this study compares secondary radar surveillance system, ADS-B and MLAT(Multilateration) system with factors based on the guidance materials from ICAO Asia and Pacific region office to suggests an adequate surveillance technology considering the regional characteristics of Jeju.
Dynamic Model Identification of Quadrotor UAV based on Frequency-Domain Approach
Jung, Sunggoo ; Kim, Sung-Yug ; Jung, Yeundeuk ; Kim, Eung-Tai ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 22~29
DOI : 10.12985/ksaa.2015.23.4.022
Quadrotor is widely used in variable application nowadays. Due to its inherent unstable characteristics, control system to augment the stability is essential for quadrotor operation. To design control system and verify its performance through simulation, accurate dynamic model is required. Quadrotor dynamic model is simply compared with conventional rotorcraft such as helicopter. However, the accurate dynamic model of quadrotor is not easy to develop because of the highly correlated aerodynamic effect of each rotor. In this paper, quadrotor dynamic model is identified from the flight data using frequency domain approach. Flight test of quadrotor is performed in closed loop configuration with stability augmentation system included. Frequency sweep input is applied in each of lateral, longitudinal, yaw and heave axis separately. The bare dynamic model is identified from the flight data of quadrotor responses and thrust measurement through Pulse Width Modulation(PWM) data. The frequency responses of identified model match well with those of flight data, and time responses of identified model for doublet input in each axis are also shown to agree with flight data.
Effect of Combustors and Propellant Parameters on the L
Instability of Solid Rocket Motors
Lee, Donghee ; Ryu, Seunghyun ; Joo, Seongmin ; Kim, Junseong ; Moon, Heejang ; Sung, Honggye ; Yang, Juneseo ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 30~35
DOI : 10.12985/ksaa.2015.23.4.030
In this paper, a theoretical study of low frequency non acoustic instability, the
instability, of a solid rocket motor is investigated. The
stability criterion is determined by analysing the
stability curves of two very distinct propellants for five different geometrical combustors. The
instability of two extreme fuels showed totally different behavior in terms of operating pressure of the combustor. A parametric study on the stability for different chamber volume and different throat area keeping constant
is conducted and analyzed. It was found that one of the main parameters, the non-dimensional critical characteristic time, requires an enough margin from the critical
A Numerical Study on the Flowfield of a Cyclone Separator for Oil Droplets
Kim, Sang-Dug ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 36~41
DOI : 10.12985/ksaa.2015.23.4.036
The cyclone separator is a simple device, which causes the centrifugal separation of materials such as droplets or particles in a fluid stream. The cyclone separator utilizes the energy obtained from fluid pressure and linear motion to create rotational fluid motion. This rotational motion leads the materials suspended in the fluid to separate from the fluid quickly due to the centrifugal force. The rotation is produced by the tangential or involuted introduction of fluid into the vessel. These materials may be droplets of fuel in blow-by gas through an engine. Droplets suspended in the feed liquid may separate according to size, shape, or density. And the change of part dimension in a cyclone separator can yield the its performance variation. The current study shows the influence of design parameters on the performance of a cyclone separator for blow-by gas.
Prediction Model with a Logistic Regression of Sequencing Two Arrival Flows
Jung, Soyeon ; Lee, Keumjin ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 42~48
DOI : 10.12985/ksaa.2015.23.4.042
This paper has its purpose on constructing a prediction model of the arrival sequencing strategy which reflects the actual sequencing patterns of air traffic controllers. As the first step, we analyzed a pair-wise sequencing of two aircraft entering TMA from different entering points. Based on the historical trajectory data, several traffic factors such as time, speed and traffic density were examined for the model. With statistically significant factors, we constructed a prediction model of arrival sequencing through a binary logistic regression analysis. With the estimated coefficients, the performance of the model was conducted through a cross validation.
A Study on the Safety Culture Index Measurement of Pilot Training School
Han, Kyoung-Keun ; Kim, Young-Suk ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 49~56
DOI : 10.12985/ksaa.2015.23.4.049
The importance of safety culture improvement and transformation has highlighted since an organization's safety culture can be the causal factor of the accident. Every designated aviation training school have to manage their own SMS and will comply with the regulations specified in article 49, Korean Aviation law. In related regulations, it is specified the safety culture status and problems of an organizations must be accessed and improved. On this study, safety culture index of designated aviation training school has measured using abbreviated CASS developed by KTSA. Results from the statistical analysis, the overall safety culture average found as 3.711. Among the subindex, mean of 'Employee Empowerment' appeared the most high(3.980) and 'Reward System' appeared the most low(3.309). Service providers are able to apply the intervention strategy on the basis of the results of these measurements. The weak part of Safety Culture might be improved and this will lead the better organizational culture.
The Effects of Personality Types of Flight Instructor and Student Pilot on the Introductory Flight Training Results
Yoon, Youkyung ; Lee, Seungwon ; Park, Seikwon ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 57~65
DOI : 10.12985/ksaa.2015.23.4.057
In this study, MBTI(Myers-Briggs Type Indicator) test was carried out targeting flight instructors and student pilots in charge of introductory flight training course. The results was analyzed in accordance with the personality type, the preferred indicator, and the combination of preferred indicators in order to see how these characteristics affect the flight training results. Most of personality types of the instructor, regardless of the attitude category such as E or I, were -STJ(70.6%), however the student pilot showed a variety of personality types, rather than professors. Sensing-type(S) students showed higher academic achievement scores than Intuition-type(N), and Judging-type(J) students showed higher academic achievement scores and pilot qualification scores than Perceiving-type(P). The success rate of Extraversion-type(E) student pilots was higher than that of Introversion-type(I) student pilots. As the personality combinations of instructor and student pilot, the academic achievement scores of Judging-Judging(J-J) type were higher than those of Perceiving-Perceiving(P-P) type. The combination of Extraversion-Extraversion(E-E) type showed higher success rate than Extraversion-Introversion(E-I). This result suggests that if both instructor and student pilot have same attitude of Extroversion(E), good training results can be expected.
An Anslysis on the Pilot Training System for the Generation of Aviation Professionals
Cho, Young-jin ; Choi, Youn-Chul ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 66~72
DOI : 10.12985/ksaa.2015.23.4.066
Recently due to shortage of pilots from aviation developed countries such as America, Japan and etc, not even regional airlines but also major airlines are facing difficulties of pilot shortage. Through statistic data, ICAO and Boeing Company are predicting that roughly 8 thousands of new pilots will be short per year. Therefore, to solve this pilot shortage, countries are searching solutions like reducing air route, and extending regular retirement. This study analyzes domestic pilot supply market and compares systems of pilot training between the domestic system and the system of America and Japan. From the comparison, the study has deducted improvements for the role of domestic certification system, ATO(Approval of Training Organizations) operation, and related organizations including the government.
The Research focusing on the Goal-directed Behavior of Duty Free Shop Users
Choi, Yu-Jin ; Park, Jin-Woo ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 73~81
DOI : 10.12985/ksaa.2015.23.4.073
The purpose of this study is to explore structural relationship between cognitive factors and emotional factors in predicting behavioral intention of duty-free users. This study conducted questionnaire survey on 246 users of duty-free shops and analyzed it by using structural equation. As the result of the study, attitude was significantly associated with both desire and behavioral intention. Subjective norm had a significant impact on desire, but had no significant imfact on behavioral intention. Whereas perceived behavioral control did not have a significant influence on desire and intention. Desire, which plays mediating role as a major variable in goal-directed behavioral model, turned out to not only have significant impact on behavioral intention but has the strongest effect as well. This study has its academic meaning in that it explored factors which have effect on decision-making process of duty-free users focusing on goal-oriented behavioral model, which is one of integrated psychological models. In practical terms, this study can be used as a basic material for corporations to establish goals in domestic duty-free shops.
A Study on the Selection of Aircraft MRO using AHP
Choi, Sejong ; Kim, Woojin ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 82~88
DOI : 10.12985/ksaa.2015.23.4.082
Airframe maintenance is regarded the most important maintenance action in airlines as the aircraft is the most valuable asset in their operation though the volume of airframe maintenance is the last in MRO market. In the selecting process of airframe MRO provider many kinds of evaluation criteria should be considered such as quality, expenses, TAT, capability, and customer support. This paper will suggest the way to select the airframe MRO in airlines and MRO business sectors using AHP.
The Effects of Recognized Career Barriers on Career Decision Level among Students of Majoring in Aviation -Focused on the Mediating Effect of Career Stress-
Bae, Shin-Young ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 89~101
DOI : 10.12985/ksaa.2015.23.4.089
In this study, it examined whether recognized career barriers among students of majoring in aviation affected career stress and career decision level, and career stress moderated the impact of career barriers on career decision level. For this purpose, it conducted a survey of aviation-related college students in C university from Sep. 21th. 2015 to Oct. 8th. 2015. A total of 225 questionnaires were analyzed using SPSS 21.0 statistical package program and frequency analysis, factor analysis, reliability analysis, regression analysis, and correlation analysis were conducted. Findings indicated that career barriers partly influenced the career stress and career decision level. Also, career stress had an negative effect on career decision level. Lastly, career stress moderated the impact of career barriers on career decision level. The implication of this paper would be used as a fundamental material to guide for career direction to students majoring in aviation.
A Study on Developing Helicopter Risk Assessment Checklist by HFOQA Event Analysis and SMS
Jeon, Je-Hyung ; Song, Je-Hwan ; Jang, Sung-Kyu ; Song, Byung-Heum ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 102~108
DOI : 10.12985/ksaa.2015.23.4.102
According to various researches, one of main causes of flight accidents is influence of human factors. It is important to collect and analyze event data in advance to minimize and prevent human errors by developing safety checklist. As a result international aviation industry developed Flight Operations Quality Assurance for commercial airliners, and, upon its proven effectiveness, it is now highly recommended to adopt for helicopter operations. Consequently, S government organization instituted Helicopter Flight Operations Quality Assurance system in 2012. Hence, this study conducted regression analysis of S organization's flight event frequency and applied ICAO SMS Matrix to categorize the severity of the events according to international standards. Based on the analysis, this research derived fundamental checklist factors for helicopter, which can be a proactive measure for safe operation.
A Study on the Effects of Perception of Airline's Service Management Strategies to Realize Customer's Expected Value
Ko, Kyong Pyo ; Lee, Nam Ryung ; Park, Sung Sik ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 109~116
DOI : 10.12985/ksaa.2015.23.4.109
The more advanced IT and mobile technologies get, the smarter customers become in the use of airline services. Using an airline, passengers are expecting more value than what airline're willing to provide them. Therefore this paper tries to find out the effect of airline staff's perception of airline's service management strategies to realize passengers' value based on previous oversea's research results. First of all, this paper provides t-test analysis results between passengers and airline staff regarding the perception of airline's service management strategy and customer orientation. Moreover, it was analyzed how the staff's understanding of the upper management's decision on service strategies would results in meeting customer's expecting values through such mediating variables as job satisfaction and customer orientation. It was proven the perception of service management strategies by staff played a very important role to realize customer's value.
A Research of Applying RAM-c to Analyze the Design Service Life for Unmanned Aerial Vehicle
Choi, Cheong Ho ; Bang, Jang Kyu ; Park, Sung Sik ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 117~124
DOI : 10.12985/ksaa.2015.23.4.117
RAM (Reliability, Availability and Maintenance) has been applied to design and analysis tools which affects system's operational sustainability and its life cycle cost as RAM-c(2009 DoD). RAM-c plays also an important role to guarantee the system engineering for mission assurance. Reliability is highly related to the probability of system failure. Availability means mission capability or the condition of ready to mission. Maintenance includes both the repair to recover the system in the event of failure/unexpected breakdown and proactive maintenance to prolong the design service life of the system or machinery. It is the purpose that this paper is to analyze and conclude the objective service life of UAV. The more UAV is operated, the less the level of its reliability becomes. Repairing failures and supplying spare parts on time, system reliability could be improved up until the time over target. Applying statistical Weibull distributions, this paper suggests the analysis of the design service life and economic life of UAV based on RAM-c with operational data.
A Study of SHEL Model Application to Passenger Brace Position Information of Korean Air Carriers
Yoo, Kyung In ; Kim, Mu Geun ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 125~132
DOI : 10.12985/ksaa.2015.23.4.125
Regional Differences of Chinese Passengers Satisfaction in Incheon International Airport
Lee, Myung Woo ; Kim, Kee Woong ; Song, Jeong-Tae ; Choi, Yeon Cheol ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 133~139
DOI : 10.12985/ksaa.2015.23.4.133
Development and On Orbit Data Analysis About Reaction Wheel of Small Satellite
Kim, JiChul ; Choi, YunHo ; Lee, Sangchul ; Oh, Hwa-suk ;
Journal of the Korean Society for Aviation and Aeronautics, volume 23, issue 4, 2015, Pages 140~145
DOI : 10.12985/ksaa.2015.23.4.140
An on-board reaction wheel is payload of small satellite for space environment test. The reaction wheel is designed for considering physical, electrical, and environmental requirements. In this paper, we report design, manufacturing process and operation performance verification. Furthermore, the specifications of environmental test are performed under environmental conditions for guarantee of stability and reliability. The operation and environment test results are presented to meet the requirements at the reaction wheel flight model.