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A Study on PU Strip Quality Improvement through a Change of Primer-process for SURION Main Rotor Blade

수리온 주로터 블레이드 프라이머 공정변경을 통한 PU Strip 품질 향상에 관한 연구

  • Lee, Yoon-Woo (Aeronautical System Center, Defense Agency for Technology and Quality) ;
  • Kim, Young-Jin (Aeronautical System Center, Defense Agency for Technology and Quality) ;
  • Seo, Young-Jin (Aeronautical System Center, Defense Agency for Technology and Quality) ;
  • Kim, Min-Ho (Korea Aerospace Industries, Ltd)
  • 이윤우 (국방기술품질원 항공센터) ;
  • 김영진 (국방기술품질원 항공센터) ;
  • 서영진 (국방기술품질원 항공센터) ;
  • 김민호 (한국항공우주산업(주))
  • Received : 2019.05.05
  • Accepted : 2019.08.05
  • Published : 2019.09.30

Abstract

Purpose: When the SURION Aircraft operated in the fields, cracks are found in PU(polyurethane) Strip on main rotor blade. This study has been conducted to explain PU(polyurethane) Strip crack phenomenon of SURION main rotor blade and to propose useful solution of it by experimental method. Methods: This study considered a lot of factor because the SURION is operated at severe environment. This study investigated the influence of temperature, thermal shock, paint and primer process, PU Strip material, primer material. Results: The results of this study are as follows; The primer process was most excellent influence. The Application of primer having a brittleness caused by a crack of PU Strip. Other factors have influenced on the PU Strip, but they can not be controlled because they are related to the SURION's operating environment. Conclusion: The Quality of PU Strip on SURION main rotor blade was improved through removing the primer process. Finally, the reliability of main rotor blade was guaranteed through improving the quality of PU Strip.

Keywords

References

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