PNIPU: Technology for increasing the service life of aircraft engines

2023: Building technology to extend the life of aircraft engines

The technology of scientists of the Perm Polytechnic will increase the service life of aircraft engines. The university announced this on June 19, 2023.

Perm Polytech scientists have created a method that will help improve automatic control system in bad weather conditions, as well as increase the life of aircraft engines.

According to scientists, the characteristics of gas turbine engines or internal combustion chambers can change depending on weather or unforeseen situations, for example, a voltage surge or a foreign object entering the turbine.

It is very difficult to catch these changes, so special sensors are installed in them to read parameters so that automation can adapt to new conditions and balance power. But due to fluctuation and impulse interference, the system is not always effective or does not work at all. Because of this, an unnecessary increase in the capacity of the aircraft engine may occur, which entails an overspend of fuel, as well as the development of an operational resource.

It is generally recognized that the main problem of objects with such non-constant values ​ ​ is the lack of their mathematical description, as well as non-systemic change in the characteristics of the transition process. It should be noted that when designing aircraft automatic control systems, the permissible value of overshoot lies in the range of 3-7%, which affects the complexity of the designed control system. Therefore, we decided to use the adaptation method with the reference model together with the method of difference in degrees of belonging for objects with non-constant values, - said the head of the Department of Automation and Telemechanics of PNIPU, Doctor of Technical Sciences, Alexander Yuzhakov.

To solve the adaptation, we programmed an algorithm that is calmly integrated into the automatic control system. It allows automation to be rebuilt with high accuracy under new conditions, and thereby prevent the engine from giving out more power than necessary. In addition, the technology is resistant to various interferences, including bad weather conditions: thunderstorms, snowfall, hail and many others, - said Sergey Storozhev, assistant of the Department of Automation and Telemechanics at PNIPU.

Thanks to the development of scientists at the Perm Polytechnic, control of the automatic control system over mechanisms that can work in undefined parameters under non-standard conditions is improved. This allows you to save energy and resource potential, for example, aircraft engines or other equipment where there is automation.