International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A Study on Assessment of Composite Couplings for Helicopter Rotor Blades with Multi-cell Sections

  • Jung, Sung-Nam (RCIT, Engineering Research Institute, Chonbuk National University) ;
  • Park, Il-Ju (Department of Aerospace Engineering, Chonbuk National University) ;
  • Shi, Eui-Sup (Department of Aerospace Engineering, Chonbuk National University) ;
  • Chopra, Inderjit (Alfred Gessow Rotocraft Center, University of Maryland)
  • Published : 2003.05.30
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Abstract

In this work, a closed-form analysis is performed for the structural response of coupled composite blades with multi-cell sections. The analytical model includes the effects of shell wall thickness, transverse shear, torsion warping and constrained warping. The mixed beam approach based on Reissner's semi-complementary energy functional is used to derive the beam force-displacement relations. The theory is validated against experimental test data and other analytical results for coupled composite beams and blades with single-cell box-sections and two-cell airfoils. Correlation of the present method with experimental results and detailed finite element results is found to be very good.

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References

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