Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Comparative Study on the Several Types of Double-Acting Oleo-Pneumatic Shock Absorbers of Aircraft Part I. Mathematical Modeling

항공기 올레오식 2중 완충기 종류에 따른 특성 비교 연구 Part I. 수학적 모델링

  • Lee, Cheol Soon (Department of Aerospace Engineering, Inha University) ;
  • Jeong, Seon Ho (Department of Aerospace Engineering, Inha University) ;
  • Kim, Kyung Jong (Department of Aerospace Engineering, Inha University) ;
  • Kim, Jeong Ho (Department of Aerospace Engineering, Inha University) ;
  • Cho, Jin Yeon (Department of Aerospace Engineering, Inha University)
  • Received : 2016.12.16
  • Accepted : 2017.08.08
  • Published : 2017.11.01
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Abstract

In this work, mathematical models are newly presented for three types of double-acting oleo-pneumatic shock absorbers as the first part of a comparative study on the several types of double-acting oleo-pneumatic shock absorbers. After a typical single-acting shock absorber model is presented for the sake of completeness, mathematical models of three types of double-acting shock absorbers are proposed. To derive the models, Bernoulli equation and orifice discharge coefficient are utilized along with the assumptions of incompressibility and poly-tropic process. The proposed models are expected to be used for investigation of the salient features of several types of double-acting oleo-pneumatic shock absorbers.

본 연구에서는 세 가지 종류의 올레오식 2중 완충기 특성 비교를 위한 첫 단계 연구로서 수학적 모델링을 새롭게 수행하였다. 논문의 완결성을 위해 먼저 전형적인 올레오식 단일 완충기에 대한 모델을 제시한 후, 세 가지 종류의 올레오식 2중 완충기에 대한 수학적 모델을 유도하였다. 수학적 모델링을 위해 베르누이 방정식과 오리피스 방출계수를 이용하였으며, 완충기 내부의 기체와 유체는 각각 폴리트로픽 과정 그리고 비압축성으로 가정하였다. 올레오식 2중 완충기 특성 연구에 제안된 모델을 적극 활용할 수 있을 것으로 판단된다.

Keywords

References

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