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Determination of Elastic Characteristics of the Helicopter Blade Attachment Based on the Strength Tests Results

Abstract

The identification of stiffness of the blade supports at lateral bending vibrations is considered. A beam model is used for elastic restraint. The target functional is applied in the form of the squared discrepancy between the experimental and theoretical values of deformations. The minimization of the functional is carried out by iterations using the sensitivity apparatus.

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Correspondence to V. A. Kostin.

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Kostin, V.A., Garaev, A.M. Determination of Elastic Characteristics of the Helicopter Blade Attachment Based on the Strength Tests Results. Russ. Aeronaut. 64, 800–804 (2021). https://doi.org/10.3103/S1068799821040279

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  • DOI: https://doi.org/10.3103/S1068799821040279

Keywords

  • inverse problems
  • identification
  • boundary conditions
  • refinement
  • sensitivity apparatus