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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 21, Issue 4 - Dec 2013
Volume 21, Issue 3 - Sep 2013
Volume 21, Issue 2 - Jun 2013
Volume 21, Issue 1 - Mar 2013
Selecting the target year
FBW System and Operational Flight Program Development for Small Aircraft
Lee, Seung-Hyun ; Kim, Eung Tai ; Seong, Kiejeong ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 1~7
DOI : 10.12985/ksaa.2013.21.1.001
To have the competitiveness in the future worldwide small aircraft market, we should be able to develop the aircraft which is highly safe, easy to fly, and having excellent flight characteristics. FBW(Fly-By Wire) system is essential for the enhancement of flight safety and control easiness. FBW system that has been applied only to the modern fighter and transport aircraft is recently applied to smaller aircraft such as regional aircraft, business aircraft and even small aircraft. The purpose of this research includes the development of flight control computer, the definition of FBW system component, the design concept of each component for redundant management, OFP(Operational Flight Program) development, FBW system integration and HILS(Hardware In-the Loop Simulation) verification environment to test this FBW system.
Design and Algorithm Verification of Precision Navigation System
Jeong, Seongkyun ; Kim, Taehee ; Lee, Jae-Eun ; Lee, Sanguk ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 8~14
DOI : 10.12985/ksaa.2013.21.1.008
As GNSS(Global Navigation Satellite System) is used in various filed, many countries establish GNSS system independently. But GNSS system has the limitation of accuracy and stability in stand-alone mode, because this system has error elements which are ionospheric delay, tropospheric delay, orbit ephemeris error, satellite clock error, and etc. For overcome of accuracy limitation, the DGPS(Differential GPS) and RTK(Real-Time Kinematic) systems are proposed. These systems perform relative positioning using the reference and user receivers. ETRI(Electronics and Telecommunications Research Institute) is developing precision navigation system in point of extension of GNSS usage. The precision navigation system is for providing the precision navigation solution to common users. If this technology is developed, GNSS system can be used in the fields which require precision positioning and control. In this paper, we introduce the precision navigation system and perform design and algorithm verification.
Ad-hoc based Multiple Access Scheme for VHF Oceanic Network
Koo, Jayeul ; Baek, Hoki ; Lim, Jaesung ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 15~22
DOI : 10.12985/ksaa.2013.21.1.015
In oceanic flight routes, HF radio and satellite data links have weather restrictions, long propagation delay and low data throughput. In this paper, we propose oceanic aeronautical communications scheme in the VHF band based on ad-hoc communication. The proposed scheme organizes autonomously a multi-hop network that is divided into multiple local network using aircraft to fly long-distance communication and supports a hybrid type of multiple access, which consists of random access and TDMA (Time Division Multiple Access) scheme. In addition, several algorithms to apply spatial reuse of transmission to multi-hop long range communication environments have been proposed. The proposed system proves performance improvement on delay time as an effective solution to communicate end-to-end on the oceanic flight routes and strengthens the reliability of oceanic aeronautical communication.
A Tracking Filter Design of the Radar Beacon System for Automatic Take-off and Landing of Unmanned Aerial Vehicle
Kim, Man-Jo ; Hwang, Chi-Jung ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 23~29
DOI : 10.12985/ksaa.2013.21.1.023
This paper presents a tracking filter of radar beacon system (RBS) for automatic takeoff and landing of an unmanned aerial vehicle. The proposed tracking filter is designed as the decoupled tracking filter to reduce the computational burden. Also, an adaptive estimation method of the measurement error covariance is proposed to provide an improved tracking performance compared to the conventional decoupled tracking filter whenever the accuracy of RBS observations is degraded. 100 times Monte Carlo runs performed to analyze the performance of the proposed tracking filter in case of normal operation and degraded operations, respectively. The simulation results show that the proposed tracking filter provides the improved tracking accuracy in comparison with the conventional decoupled tracking filter.
UAV Performance Improvement Using Integrated Analysis and Design Optimization Technology
Kim, Jimin ; Nguyen, Nhu Van ; Shu, Jung-Il ; Maxim, Tyan ; Lee, Jae-Woo ; Kim, Sangho ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 30~38
DOI : 10.12985/ksaa.2013.21.1.030
This paper describes the design optimization of Unmanned Aerial Vehicles(UAVs). An optimization framework has been developed and implemented for the conceptual design of UAVs. An integrated design analysis program was developed with several analysis modules such as propulsion, performance, mission, weight, and stability and control. A UAV configuration design optimization was performed by implementing the integrated analysis to enhance the endurance of UAVs. A SQP optimizer was utilized to build an optimization module for this program and sensitivity analysis was performed to determine the trends of shape variables for developing optimization objective. In conclusion, the results indicate that the resulting optimized UAVs configurations show performance improvements over the baseline design and reliable analysis results.
An analysis of the fuel saving effect during low carbon flight procedures
Kim, Yongseok ; Lee, Juhyung ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 39~44
DOI : 10.12985/ksaa.2013.21.1.039
The amount of greenhouse gas (GHG) emissions has been increasing steadily over the last 4 years, averaging 6.8 percent a year, due to the growth of low cost carriers and the increased demand for air transportations. For the aviation GHG reduction, various fuel saving activities are implemented in many areas such as high-efficiency aircraft and bio-fuel development in the technical part and low carbon flight procedures, short cut route development in the operational approach. Among the various reduction technologies, we focused on low carbon flight procedures that are crucial to GHG reduciton and suggested a reduction effect according to target implementation rate using by fuel saving estimation data in each aircraft type.
Numerical Analysis on the Aerodynamic Characteristics of Thin Airfoil with Flapping and Pitching Motion
Kim, Woo-Jin ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 45~50
DOI : 10.12985/ksaa.2013.21.1.045
In this study, lumped-vortex element method and thin airfoil theory were used to analyze aerodynamic characteristics of airfoils with relative motion that had camber lines of NACA
airfoil in 2-dimensional unsteady incompressible potential flow. Velocity disturbance due to airfoil was calculated by lumped-vortex element model and force distribution on airfoil by unsteady Bernoulli`s equation. Variables in relative motion were considered the period p, the amplitude of flapping
, and the phase difference between flapping and pitching
and the angle of attack
. Due to movement of an airfoil, dag was induced in 2-dimensional unsteady incompressible potential flow. The numerical results show that the aerodynamic characteristics of the airfoil with flapping and pitching at the same time are illustrated. Especially the mean lift coefficient became smaller, but drag coefficient became larger.
A Study on the Risk Assessment Criteria to be applicable for Establishing Flight Procedure Design Process
Kim, Dohyun ; Kim, W.Y. ; Jie, M.S. ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 51~56
DOI : 10.12985/ksaa.2013.21.1.051
Risk assessment should be processed when physical circumstances of airspace such as establishment of new flight procedures or reconstruction of existing airspace are planned to change and one of the alternatives for the change have to be selected. This is an effort to find the best alternative which is able to maintain at or above the acceptable risk level. ICAO and its contracting states provide specialized guidance material for `Safety Management System` relating to handing airspace matters. These manuals include a conceptual framework for managing safety as well as some of the systemic processes and criteria used to meet the objectives of a State`s safety programme. This criteria must be established in compliance with the State`s laws and regulations for air safety and for the fulfillment of the State`s safety goals. This study is to carry out the risk assessment criteria through literature reviews relevant to the safety management, and to propose the results of criteria to be applicable for establishing flight procedure design process.
The Analysis the Certification Policy of Light Sport Aircraft
Shin, Dai-Won ; Kim, Woong-Yi ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 57~61
DOI : 10.12985/ksaa.2013.21.1.057
In the present study, which is currently operating domestically and internationally, from the Technical Standards for Flight Safety of Light Sport Aircraft and certification system through a comparative analysis of the LSA Category Airworthiness Certifications documents. In particular, an aircraft type analysis of FAA certified S-LSA that the speed greater than 120 knots LSA manufactured without United States of America. Through the analysis, we presented a revised plan to activation of the domestic aviation leisure sports and the development of the Light Sport Aircraft industry in reality.
Structural Development for Human Powered Aircraft
Shin, Jeong Woo ; Woo, Dae Hyun ; Park, Ill Kyung ; Lee, Mu-Hyoung ; Lim, Joosup ; Park, Sang Wook ; Kim, Sung Joon ; Ahn, Seok Min ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 62~67
DOI : 10.12985/ksaa.2013.21.1.062
Human Powered Aircraft (HPA) should be light in weight and have high efficiency because power source of propulsion is human muscles. Airframe structure takes up most of empty weight of aircraft, so weight reduction of structure is very important issue for HPA. In this paper, design/analysis/test procedures for ultra light weight structure of the HPA developed by Korea Aerospace Research Institute (KARI) are explained briefly. Structural design is conducted through case studies on HPA in the USA and Japan. Loads analysis is performed to calculate design loads which is needed for structural design and analysis. Structural analysis is conducted for structure sizing. Static strength test of main wing spar which is primary structure of wing is performed to verify structural integrity.
The Study of Characteristics of Korea Fog and Forecast Guidance
Kim, Jun-Sik ; Kim, Jae-Hwan ; Park, Sang-Hwan ; Kim, Young-Chul ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 68~73
DOI : 10.12985/ksaa.2013.21.1.068
This study is to make a protype of forecast guidance for forecasters from analyzing the characteristics of Korea Fog. The trend of Korea fog showed the decline in the number of foggy days and the duration time, the gradient is -1.24days/year under 3 miles and -0.98days/year under 1 mile and -1.64hours/year under 3 miles and -3.18hours/year under 1 mile in duration time in 27 ROKAF base. To find the protype of inland and coastal forecast guidance, Daegu base as a representation of the inland base and Gangneung base as the representation of the coastal base were chosen. For Daegu base, the mixture of relative humidity, sky condition, and the position of high pressure were selected for the forecast guidance. For Gangneung base, pressure pattern, sea surface temperature, sea currents, and 850hPa temperature patterns were selected for the forecast guidance.
Requirements and Considerations for Qualification and Training of RPA Pilot
Hwang, You-Chul ; Kang, Ja-Young ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 74~79
DOI : 10.12985/ksaa.2013.21.1.074
Early remotely-piloted aircraft system (RPAS) development focused on simple reconnaissance to obtain information by visual observation for military demands. Currently, various types of remotely-piloted aircraft (RPA) is being developed worldwide for applications in many different areas. As RPA avionics are combined with CNS/ATM technologies, RPA capabilities will be enhanced and the market is expected to grow rapidly. ICAO has been held the Air Navigation Commission on 14 October 2011 to discuss revising Procedures for air navigation services (PANS) and guidance material related to RPA and their associated systems. It progressed that Annex 2 and 7 will be revised and came into effect from 2012. However most of incorporate revisions are not clear yet. Because the revision articles recommend follow requirements of the state(s). Considering operations of RPA in controlled airspace and between adjacent states, the qualification and training of RPA pilot will be one of the main issues for RPA operation. In this paper, we will take a look at international and domestic trends of regulation framework in ICAO and RPA advanced country in chapter 2.1 and suggest about consideration of remote pilot qualification and training for establishing regulations of remote pilot license.
Analysis of Aviation Accident and Incident in Military Using the ECCAIRS 5
Kim, Won-Kyou ; Hong, Seung-Beom ; Jie, Min-Seok ; Hong, Gyo-Young ; Ahn, Dong-Man ; Choi, Youn-Chul ;
Journal of the Korean Society for Aviation and Aeronautics, volume 21, issue 1, 2013, Pages 80~86
DOI : 10.12985/ksaa.2013.21.1.080
In an effort to decrease aviation accident worldwide, development of aviation safety management has been sought through aviation index and standardization, both by establishing SMS(Safety Management System). It also needs to be done in the domestic. both study on SMS which ICAO recommends and setting the top priority safety goal, each differently classified by nations. Accordingly, defining safety index and developing continuous monitoring approach. Aircraft accident reporting system in Air Force does not operate in a open approach method due to its uniqueness related to mission achievement. Therefore, limits of utilizing the recent worldwide aircraft data sharing and analyzing results to prevent accident is inevitable. This paper introduces an overview of ECCAIRS 5 which become the standard for the recent worldwide aviation safety reporting and data exchange system. Also using ECCAIRS 5, aircraft accident cases of the Air Force are classified such as accident type, year, month, occurrence category, and flight phase. The result of the study will provide a guide line for utilizing the civil system in prevention of future military aviation accidents.