Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Quality Improvement of Smart UAV Rotor-Hub Part Through Gas Nitriding of Maraging Steel

가스질화처리 적용을 통한 스마트무인기 머레이징강 로터허브 부품 품질개선

  • Lee, Myeong Kyu (Future Aircraft System Division, Korea Aerospace Research Institute) ;
  • Choi, Seong Wook (Future Aircraft System Division, Korea Aerospace Research Institute) ;
  • Kim, Jai Moo (Future Aircraft System Division, Korea Aerospace Research Institute)
  • 이명규 (한국항공우주연구원 미래비행체계실) ;
  • 최성욱 (한국항공우주연구원 미래비행체계실) ;
  • 김재무 (한국항공우주연구원 미래비행체계실)
  • Received : 2014.03.04
  • Accepted : 2014.06.28
  • Published : 2014.06.30
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Abstract

Feathering spindle is one of the critical parts of the rotor system in the Smart Unmanned Aerial Vehicle(SUAV) that it was manufactured with special material, Maraging C300. During the initial ground and tie-down flight tests of the SUAV, surface of the feathering spindle contacting to the needle-roller bearings showed excessive wear and dent due to high vibrating loads transferred from the rotating blades. Gas nitriding process was applied to the bearing contact surface of the feathering spindle to increase surface hardness so as to improve the surface defects. This paper briefly presents the gas nitriding process adopted and the spindle quality improvements including wear and corrosion resistance.

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