Abstract

During the operation of gas turbine engines (GTE), failures are encountered due to structural, production, and operational defects. According to the damage of the gas turbine engine, the percentage of malfunctions in the lubrication and venting system is 2.9% [1]. This paper discusses the most common problematic issues in the operation of oil systems (OS) associated with the formation of solid decomposition products of oils on the surfaces of gas turbine engine parts. Laboratory studies of the creation of high-temperature carbon deposits on a heated aluminum surface were carried out by spraying the test oil on it for a specific time on the tilt plate instrument. This instrument was used to study NYCO TURBONIKOIL 98 aviation oil for aviation gas turbine engines (GTD-350, TV2-117, TV3-117, VK-2500) and main gearboxes (VR-2, VR-8A, VR-14, VR- 252) aircraft (Mi-2, Mi-8T, Mi-8MTV/AMT, Ka-32). Quantitative dependencies of the formation of carbon deposits on the oil temperature and the temperature of the aluminum plate are obtained, and a color template of the intensity of formation of solid high-temperature carbon deposits depending on the oil temperature and the temperature of the aluminum plate is presented.

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