DESIGN and STRUCTURAL PERFORMANCE COMPARISON of HELICAL PLANET GEARBOXES for GEARED TURBO FAN ENGINE

Hilmi Saygin SUCUOGLU

Abstract


GTF (Geared Turbo Fan) engines have systems defined as advanced engine architecture. In this system, a double helical planetary gearbox is used between the fan and the compressor. In this study, finite element analyses were conducted for double helical planetary gearbox with 4 different helix angles and 3 different titanium alloys. It was aimed to determine the optimum helix angle and titanium alloy. It was observed that Ti-6Al-4V alloy with the helix angle 25° had the minimum deformation as 0.033 mm, occurred stress as191.00 MPa and strain as 0.0018 values. It was obtained from the analyses results and comparisons that Ti-6Al-4V alloy with the helix angle 25° was the optimum for applications

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