VIBRATIONAL CHARACTERISTICS OF AIRCRAFT EXHAUST T50 THERMOCOUPLE

Siddesha T , Madhusudhana S, Lingaraj L

Abstract: A limiting factor in a gas turbine engine is the temperature of the turbine section. The temperature of a turbine section must be monitored closely to prevent overheating the turbine blades and other exhaust section components. One common way of monitoring the temperature of a turbine section is with an EGT gauge. The main focus of this project work is to analyse and validate the T50 thermocouple for static and fatigue load requirement using finite element analysis tool Ansys workbench14.5.Analysis results are correlated and validated using empherical relations. In case of static nonlinear analysis, bolt pretension has been validated using bolt stiffness relation. In case of dynamic analysis thermocouple response has been validated using harmonic sine equation. The proposed design meets the design guidelines of FAA for critical engine operating conditions.

Keywords: Aerospace, FEM, Fatigue Strength, Nonlinear Static Analysis.

DOI: https://doi.org/10.15623/ijret.2016.0516089