Research Into Improving the Durability of the Hot Section in the Aircraft Turbine Engine.

摘要

Propulsion Branch at ARL is reviewing the direction of its research activities into the integrity, durability and life extension of aircraft turbine engine components. Hot section repairs dominate the costs of engine overhaul, so resources are being redeployed from other programs on life of engine components toward this area of high potential benefit. Engine hot section life is an area of great complexity and wide scope. Despite the technical difficulties and limits in resources, the Branch can make a useful contribution with carefully selected research. New areas or extensions proposed are structural analysis of high temperature components under cycles of thermal loading, and thermal analysis of components to determine temperature distribution which characterises the thermo-mechanical loading. While structural analysis can build upon existing related expertise, little experience exists in thermal analysis and its core discipline of heat transfer, so a program to build up this technology base is proposed and options are examined.