Analysis of diagnostic informativeness of the exhaust temperature of a naval gas turbine

This article deals with diagnostic technology of naval gas turbine engines based on exhaust temperature measurements. It contains a detailed discussion devoted unsteady thermal-flow processes worked out within the considered two and three-shaft engine in terms of emergency overloads in passages that might lead to failures occurrence of the engine blading. An automatic control subsystem protecting the engine against an excessive growth of the exhaust stream temperature during start-up and acceleration processes has been described in order to explain the main aims of simulating examinations conducted on the engine in current operation: evaluation of the borders for the exhaust temperature’s tolerances and early detection of the control subsystem’s damages threatening the engine’s reliability