• Title/Summary/Keyword: Data Pilots

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A Study on the Application of Analytic Hierarchy Process to the selection of Airliners (계층화의사결정법(AHP)을 이용한 여객기의 기종선정에 관한 연구)

  • Eun, Hee-Bong;Kim, Bong-Sun
    • IE interfaces
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    • v.14 no.1
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    • pp.47-53
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    • 2001
  • This paper was studied to present a model for the application of AHP to the selection of airliners. For this study, a questionnaire was developed in respect to the criteria of airliner and given to 80 airline pilots and 30 maintenances in airlines to ask their opinions about the candidates for the middle-range airliners. The AHP software developed by Korean Advanced Institute of Science Technology (KAIST) was used to process the data. The result was analyzed by the criteria of selecting airliners and the several alternatives for the middle-range airliners.

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Derivation and Validation of Aerodynamic Parameters of Small Airplanes Using Design Software and Subjective Tests (설계용 S/W를 활용한 소형비행기의 비행특성 매개변수 추출과 주관적 시험평가방식에 관한 연구)

  • 이숙경;공지영;최유환;윤석준
    • Proceedings of the Korea Society for Simulation Conference
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    • 2004.05a
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    • pp.142-147
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    • 2004
  • It is very difficult to acquire high-fidelity flight test data for small airplanes such as typical unmanned aerial vehicles because MEMS-type small sensors used in the tests do not present reliable data in general. Besides, it is not practical to conduct expensive flight tests for low-cost small airplanes in order to simulate their flight characteristics. A practical approach to obtain acceptable flight data, including stability and control derivatives and data of weight and balance, is proposed in this study. Aircraft design software such as Darcorp's AAA is used to generate aerodynamic data for small airplanes, and moments of inertia are calculated using CATIA, structural design software. These flight data from simulation software are evaluated subjectively and tailored using simulation flight by experienced pilots, based on the certified procedures in FAA AC 120-45A and 40B, which are used for manned airplane simulators.

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Development of UFC/DC Data Communication method for XKO-1 using RS-422 Bus (RS422 버스를 이용한 저속통제기 UFC/DC 데이터 통신 기법 개발)

  • 양승열;김영택
    • Journal of the Korea Institute of Military Science and Technology
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    • v.5 no.2
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    • pp.123-131
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    • 2002
  • ASC(Avionics System Computer) was developed to control weapon delivery and navigation sensors, and to perform man-machine interface with pilots for XKO-1 aircraft. The data communications between ASC and UFC(Up Front Controller), DC(Data Concentrator) were implemented by RS422 serial data bus. Also, SCIL(Standard Computer Interface Library) was designed to facilitate control and management of the computer hardware resources and is embedded in the ASC. These structures have a merit of noise immunity and a reduction of wire harness for signal lines, and enable OFP(Operational Flight Program) programmers to use the SCIL easily without knowing hardware details. Manufactured system was on installed on XKO-1, and peformed for BIT(Built In Test) and interface test with UFC and DC. The test results show that it meets the system requirements.

Performance Analysis of Machine Learning Based Spatial Disorientation Detection Algorithm Using Flight Data (비행데이터를 활용한 머신러닝 기반 비행착각 탐지 알고리즘 성능 분석)

  • Yim Se-Hoon;Park Chul;Cho Young jin
    • Journal of Advanced Navigation Technology
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    • v.27 no.4
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    • pp.391-395
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    • 2023
  • Helicopter accidents due to spatial disorientation in low visibility conditions continue to persist as a major issue. These incidents often stem from human error, typically induced by stress, and frequently result in fatal outcomes. This study employs machine learning to analyze flight data and evaluate the efficacy of a flight illusion detection algorithm, laying groundwork for further research. This study collected flight data from approximately 20 pilots using a simulated flight training device to construct a range of flight scenarios. These scenarios included three stages of flight: ascending, level, and descent, and were further categorized into good visibility conditions and 0-mile visibility conditions. The aim was to investigate the occurrence of flight illusions under these conditions. From the extracted data, we obtained a total of 54,000 time-series data points, sampled five times per second. These were then analyzed using a machine learning approach.

The Design and Implementation of the Collision Avoidance Warning Function in the Air Traffic Control System (항공관제 시스템에서 항공기 공중충돌 경고기능의 설계 및 구현)

  • Song, Jin-Oh;Sim, Dong-Sub;Kim, Ki-Hyung
    • Journal of the Korea Institute of Military Science and Technology
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    • v.12 no.2
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    • pp.213-221
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    • 2009
  • An aircraft collision accident is a disaster that causes great losses of inventories and lives. Though a collision avoidance warning function is provided automatically to pilots in the aircrafts by the enhancement of the aircraft capability, achieving fast decision-making to escape a collision situation is a complex and dangerous work for pilots. If an in-flight collision situation is controlled by the air traffic control system which monitors all airplanes in the air, it would be more efficient to prevent in-flight collisions because it can handle the emergency before the pilot's action. In this paper, we develop the collision avoidance warning function in the air traffic control system. Specifically, we design and implement the five stages of the collision avoidance function, and propose a visualization method which could effectively provide the operators with the trajectories and altitudes of the aircrafts in a collision situation. By developing an in-flight collision warning function in the air traffic control system that visualizes flight patterns through the state transition data of in-flight aircrafts on the flight path lines, it can effectively prevent in-flight collisions with traffic alerts. The developed function allows operators to effectively select and control the aircraft in a collision situation by providing the operators with the expected collision time, the relative distance, and the relative altitude while assessing the level of alert, and visualizing the alert information which includes the Attention-Warning-Alert phase via embodying the TCAS standard. With the developed function the air traffic control system could sense an in-flight collision situation before the pilot's decision-making moment.

A Study on the Development of PC-based DestTop Ship Maneuvering Simulator for trainning purpose (PC를 이용한 선박조종연습 DESKTOP Simulator개발에 관한 연구)

  • 허용범;윤점동
    • Journal of the Korean Institute of Navigation
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    • v.20 no.2
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    • pp.1-13
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    • 1996
  • Most of the ShipHandling Simulators of full-mission-bridge system need vast area to install and even PC-based maneuvering simulators are often equipped with Steering Wheel or Engine Telegraphe etc. of data input interface, which necessarily makes the user face with excessive financial burden. These have been one of the obstacles for the officers, captains, pilots and students in access to maneuvering simulation whenever they want to try it in advance prior to actual ship maneuvering. Subsequently, all the officers and captains come to have little chances to train themselves until they arualified as a pilot after a long period of time of realship maneuvering practice on board, which means they have to control they have to control their own ship at sea without clear understanding on her maneuverability when they are forced to do it on the way. And these lack of capability for maneuvering have used so often to result in marine casualties of collision with other ships or pier facilities while maneuvering in harbor. To prevent those accidents by means of enhancing their maneuvering ability, PC-based DeskTop Simulator that allows anyong to access readily at anytime is needed and in conformation to such demand this simulator has been developed. The Software this simulator written in Turbo Pascal Ver. 5.0 has adopted MMG mathmatical model theoretically in part and also it was designed to make it possible that all numeric data inputs and outputs with graphic presentation for maneuvering operation be carried out just only with keyboard and monitor console. With the Simulation software, all the officers, captains, pilots and even students who has a proper computer at hand are expected to be able to make an attempt to simulate the maneuvering of their ownship or any other types of them at any port in which they want to do it.

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A New SC-FDE Transmission Structure for Coping with Narrow Band Jammers and Reducing Pilot Overhead (협대역 재머 대응과 파일럿 오버헤드 감소를 위한 새로운 SC-FDE 전송구조)

  • Joo, So-Young;Choi, Jeung-Won;Kim, Dong-Hyun;Jeong, Eui-Rim
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.23 no.8
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    • pp.981-987
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    • 2019
  • In this paper, we propose a new SC-FDE (single carrier frequency domain equalization) structure to cope with narrow band interference signals or jammers and reduce pilot overhead. The conventional SC-FDE structure has a problem that the receiver performance degrades severely due to difficulty in time-domain channel estimation when narrow band jammers exist. In addition, the spectral efficiency is lowered by transmitting pilot at every SC-FDE block to estimate channel response. In order to overcome those problems, the proposed structure is devised to estimate frequency domain channel directly without time domain channel estimation. To reduce the pilot overhead, several data blocks are transmitted between two pilots. The channel estimate of each data block is found through linear interpolation of two channel estimates at two pilots. By performing frequency domain channel equalization using this channel estimate, the distortion by the channel is well compensated when narrow band jammers exist. The performance of the proposed structure is confirmed by computer simulation.

The Digital Redundancy Design for Back-up Mode Operation of Aviation Intercom (항공용 인터콤의 백업 모드 운용을 위한 디지털 방식의 이중화 설계)

  • Jeong, Seong-jae;Cho, Kyung-hak;Kim, Dong-hyouk;Lee, Seong-woo
    • Journal of Advanced Navigation Technology
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    • v.26 no.5
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    • pp.358-364
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    • 2022
  • The Inter Communication System for avionics is in charge of processing all voice signals that internal calls between Pilot and Co-pilot, internal calls between Pilots and Crews, external calls through communication equipment such as Ultra/Very High Frequency Receiver/Transmitter(U/VHF RT), audio signal monitoring for navigation and mission equipment such as VHF Omnidirectional Range/Instrument Landing System(VOR/ILS), Tactical Air Navigation(TACAN), audio signal output for voice recording to Flight Data Recorder(FDR) and Data Transfer System(DTS), and warning/caution audio signal generate about the status and threat of aircraft. Because Inter Communication System for avionics is sensitive to noise in the case of analog audio signals, a redundant design that can protect audio signal from electromagnetic noise inside/outside of aircraft is required for the mission of pilots and crews. In this paper, Normal/Back-up operation mode and redundancy design plan based on digital method for the redundancy of the digital Inter Communication System for avionics and manufacturing, verification results are described.

Assessment of Pilot Training Effectiveness of VR HMD based Flight Training Device (VR HMD 기반 모의 비행 훈련 장치의 조종사 훈련 효과 평가)

  • Jeong, Gu Moon;LEE, YOUNGJAE;Lee, Chi ho;Kim, Mu Kyeom;Lee, Jae-Woo
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.26 no.4
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    • pp.129-141
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    • 2018
  • In this paper, two different flight training devices were constructed to verify the effectiveness of a pilot training system based on a Virtual Reality Head Mount Display. VFR Flight Procedure and IFR Flight Procedure were conducted by high level pilots with Commercial Pilot Licence. Flight data and pilot's visual data for each flight procedure were extracted, compared and analyzed with two training systems. Finally, the effectiveness of the training systems based on the VR HMD was demonstrated by assessing the given mission and the flight results.

Explanatory Research on CPDLC-DCL in USA of B747-8 (B747-8 항공기의 CPDLC-DCL 운영에 관한 설명적 연구 (미국 내 운항을 중심으로))

  • Moon, Bong-Sup;Choi, Youn-Chul
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.27 no.2
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    • pp.70-78
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    • 2019
  • CPDLC-DCL (Controller Pilot Data Link Communications-Departure Clearance) began in 2016 with 62 Towers in the United States. The application of this procedure is to utilize equipment different from existing ACARS PDCs or ACARS-DCLs. The purpose of this study is to provide information and understanding of CPDLC-DCL operation methods. Also, B747-8 aircraft considered operational cases related to departure procedures at U.S. airports. This procedure is currently not mandatory but will be mandatory in the future. The Flight Crew Procedures for CPDLC-DCL, as an appendix, will be a useful resource for B747-8 pilots.