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Design and Integration of a Dual Redundancy Air Data System for Unmanned Air Vehicles

무인항공기 이중화 대기자료시스템 설계 및 통합 연구

  • Won, Dae-Yeon (Aerospace Technology Research Institute, Agency for Defense Development) ;
  • Yun, Seonghun (Aerospace Technology Research Institute, Agency for Defense Development) ;
  • Lee, Hongju (Aerospace Technology Research Institute, Agency for Defense Development) ;
  • Hong, Jin-Sung (Aerospace Technology Research Institute, Agency for Defense Development) ;
  • Hwang, Sun-Yu (Aerospace Technology Research Institute, Agency for Defense Development) ;
  • Lim, Heung-Sik (Aerospace Technology Research Institute, Agency for Defense Development) ;
  • Kim, Taekyeum (Korean Air R&D Center)
  • 원대연 (국방과학연구소 항공기술연구원) ;
  • 윤성훈 (국방과학연구소 항공기술연구원) ;
  • 이홍주 (국방과학연구소 항공기술연구원) ;
  • 홍진성 (국방과학연구소 항공기술연구원) ;
  • 황선유 (국방과학연구소 항공기술연구원) ;
  • 임흥식 (국방과학연구소 항공기술연구원) ;
  • 김태겸 ((주)대한항공 항공기술연구원)
  • Received : 2020.06.03
  • Accepted : 2020.10.09
  • Published : 2020.12.05

Abstract

Air data systems measure airspeed, pressure altitude, angle of attack and angle of sideslip. These measurements are essential for operating flight control laws to ensure safe flights. Since the loss or corruption of air data measurements is considered as catastrophic, a high level of operational reliability needs to be achieved for air data systems. In the case of unmanned air vehicles, failure of any of air data sensors is more critical due to the absence of onboard pilot decision aid. This paper presents design of a dual redundancy air data system and the integration process for an unmanned air vehicle. The proposed dual-redundant architecture is based on two independent air data probes and redundancy management by central processing in two independent flight control computers. Starting from unit testing of single air data sensor, details are provided of system level tests used to meet overall requirements. Test results from system integration demonstrate the efficiency of the proposed process.