Investigation of the Kinetics of Changes in Performance of Oil for Aircraft Gas Turbine Engines

In order to develop a method for assessing the service life, the values of kinematic viscosity at temperatures of 100 °C and minus 40 °C, acid number and amount of sediment insoluble in isooctane, critical load and the wear scar diameter, height and time of destruction of the foam column, as well as...

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Bibliographic Details
Published in:Russian aeronautics 2023-08, Vol.66 (3), p.415-421
Main Authors: Yanovskii, L. S., Ezhov, V. M., Il’ina, M. A.
Format: Article
Language:English
Subjects:
Aircraft engines
Aircraft Equipment
Automotive Engineering
Engineering
Gas turbine engines
Gearboxes
Helicopters
Isooctane
Kinematics
Oxidation
Property values
Service life assessment
Tensile strength
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Summary:In order to develop a method for assessing the service life, the values of kinematic viscosity at temperatures of 100 °C and minus 40 °C, acid number and amount of sediment insoluble in isooctane, critical load and the wear scar diameter, height and time of destruction of the foam column, as well as the tensile strength of IRP-1316, IRP-1287 and 51-1434 sealing rubbers of aviation oils were determined in the state of delivery and after oxidation at temperatures of 200, 225, and 240 °C. The influence of water in concentrations of 0.01, 0.1 and 1% on the performance properties of oils, was estimated. Based on the mathematical dependences obtained for the property values on the time and temperature of oxidation, the estimation of the operating time of the standard oil for aircraft gas turbine engines and helicopter gearboxes was carried out
ISSN:1068-7998
1934-7901
DOI:10.3103/S1068799823030017