REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

SOME ASPECTS OF DESIGN, PRODUCTION AND EXPERIMENTAL VERIFICATION OF COMPOSITE TAIL ROTOR BLADES

STEVAN MAKSIMOVIĆ

Military Technical Institute, Belgrade, s.maksimovic@mts..rs

DESPOT JANKOVIĆ

VZ Moma Stanojlović, Batajnica, despotvz@gmail.com

KATARINA MAKSIMOVIĆ

City of Belgrade – City Government, Secretariat for Communal and Housing Affairs
Office of Water Management, Belgrade, Serbia, kmaksimovic@mts.rs

OGNJEN OGNJANOVIĆ,

Military Technical Institute, Belgrade, ognjenognjanovic@yahoo.com

Abstract: In this investigation some aspects of design, production and experimental verification of composite structural elements are considered. Special attention in this consideration is focused on strength analysis of composite structures with application to helicopter tail rotor blades HT-40. The procedures in domains design, production and experimental verifikation of helicopter tail rotor blade are considered. This work considers fatigue strength behavior of construction made from composite materials. Primary attention in this investigation is focused to fatigue strength behaviors of helicopter tail rotor blade made from composite materials. The tail rotor blade is tested under static loads and fatigue load spectrum. In this investigation some aspects of the fatigue strength tests of helicopter composite tail rotor blades under spectrum loading is considered. To verify fatigue strength of the tail rotor composite blades here are tested with respects to fatigue for one critical load case. The computation procedure for optimal design of layered composite structural components is illustrated here.

Key words: helicopter, tail rotor blade, composites, strength analysis, fatigue, experimental verification.