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2 2016

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Thermal defects of avionic turbojet engines

Szczepankowski A., Szymczak J.

Prace Naukowe Instytutu Technicznego Wojsk Lotniczych

2016

nr 38

33--45

The paper analyzes the most frequent reasons associated with operation of avionic turbojet engines (ATE) and leading to initiation of thermal defects affecting turbine units. These reasons are illustrated with examples of gradual deteriorations revealed on surfaces of turbine parts and subassemblies and defected during endoscopic examinations of propelling drives. Attention is paid to various design and technological improvements that are implemented to counteract such deteriorations. The analysis is focused on mistakes that are committed during operation, repairs or manufacturing of avionic turbojet engines and that may affect safety of aircraft operations.

Initiation of damage to the hot part of aircraft turbine engines

Szczepankowski A., Szymczak J.

Prace Naukowe Instytutu Technicznego Wojsk Lotniczych

2016

nr 38

61--74

In the paper, the initiation causes of damage to flame tubes of a basic combustion chamber and turbine units, which are the most common in the operation process of aircraft turbine engines (ATE), were presented. They were illustrated with the use of numerous examples of progressing degradation of the surface condition of parts and components of various types of aircraft engines which was found during endoscopic controls. On the basis of the systematic observation results, the process of destruction of the turbine rotor ring blades’ surface was discussed. The attention was paid to the current and still valid evaluation of the aircraft turbine engine’s suitability for further operation, taking into account the specifics of its use.