• Title, Summary, Keyword: 항공기제동계수

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Developments of ABS Controller and Real-Time HILS for Aircraft Braking System (항공기 제동시스템 Real-Time HILS 및 제어기 개발)

  • Jeon, Jeong-Woo;Woo, Gui-Aee;Lee, Ki-Chang;Hwang, Don-Ha;Kim, Yong-Joo
    • Proceedings of the KIEE Conference
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    • pp.2236-2238
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    • 2003
  • 본 논문에서는 항공기 ABS 개발을 위한 시험용 실시간 HILS (Hardware-In-the-Loop-Simulation) 및 제어기 개발을 목적으로 하여, 설계된 ABS 제어 로직에 의해, HILS 구동 제어 결과, 제동 거리, 제동시의 압력인가, 그리고 슬립 마찰 계수와 관련한 시험 결과를 제시하였다.

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Study of Tribological Characteristics Between Metallic friction materials and Brake Disk (금속계 마찰재와 제동디스크 간의 마찰특성 연구)

  • Kim, Sang-Ho;Park, Hyung-Chul;Lee, Hi-Sung
    • Proceedings of the KSR Conference
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    • pp.2080-2093
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    • 2008
  • Disk brake system take charge of maximum braking energy among the mechanical brake systems for high speed train. For this reason, Metallic friction materials and heat resistant steel disk is adopted at disk brake system for high speed train. It was investigated tribological characteristics(friction coefficient, friction stability, wear rate and braking temperature) between some kinds of metallic friction materials and heat resistant steel disk. Cu-based friction material for high speed train have suitable tribological characteristics.

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Friction and Wear Characteristics and Reliability Estimation of Aircraft Brake System (항공기 제동장치의 마찰.마멸 특성 및 신뢰도 예측)

  • 장동관;김대은
    • Journal of the Korean Society for Precision Engineering
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    • v.20 no.11
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    • pp.127-133
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    • 2003
  • Pin-on-disk and hardness tests using mechanical components of M-20J aircraft braking system were performed to identify the friction and wear characteristics. The intention of this work was also to analyze a 5-year term maintenance record of an M-20J aircraft. used for flight training at Hankook Aviation University, and to determine the reliability of the brake system of an M-20J aircraft. The mean wear coefficients of the lining sliding against the brake disk were compared between the test and reliability estimation to obtain a predictive wear model.

A Study on the Application of Runway Friction Measurements (활주로 마찰계수 측정 및 적용에 관한 연구)

  • Noh, Kun-Soo
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.24 no.3
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    • pp.62-68
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    • 2016
  • According to the accident/incident reports of aircraft runway overruns and excursions, it generally shows runway friction reduction and aircraft braking capability deterioration are the basic causes due to adverse weather. Although surface of paved runway gets wet, it also should give good friction capability. If runway surface is worn due to long time usage and friction capability is reduced due to rubber accumulation or weather conditions(snow, rain, ice etc.), airport authorities should rapidly measure friction coefficient and give them to relevant persons through aeronautical information system and support safe takeoff and landing. Operation wise, these information of friction coefficient reduction should be lead to aircraft performance adjustments, but the data from manufacturer(performance manual) are airplane braking coefficient and the data from airport authorities are vehicle measured braking coefficient. But these two data are considered as the same meaning although the definite relationship between them is not clarified yet. So I am trying to search for the technical background of these two data and suggest reasonable method to use them efficiently.