DEFINITION OF LOAD SPECTRA USING CFD METHOD AND FATIGUE LIFE  ESTIMATION OF HELICOPTER ROTOR BLADES

Stevan MaksimoviĆ

Military Technical Institute, Belgrade, s.maksimovic@open.telekom.rs

MIRKO KOZIĆ

Military Technical Institute, Belgrade

KATARINA MAKSIMOVIĆ

Republic Serbia, City Administration of City of Belgrade,

Secretariat for Utilities and Housing Services Water Management, Belgrade, Serbia

DRAGUTIN GEORGIJEVIĆ

Military Technical Institute, Belgrade

Ognjen OGNJANOVIĆ

Military Technical Institute, Belgrade

Abstract:  Attention in this work is focused on defining load spectra of helicopter blade and fatigue life estimation of critical structural components. To determine loads of blades it is necessary to use powerfull computation methods. In  this investigation for determination loads of  blades CFD numerical simulation is used. In this work are given loads of helicopter blade HT-40 that are obtained combining analytic and numerical simulation software CFD. Fatigue life estimations is considered for metal structural elements of rotor blade. Computation results are compared with experiments.