The influence of contaminated hydraulic fluid on the relative volume flow rate and the wear of rubbing parts of the aviation plunger pump
Abstract
Still, there is the problem of the plunger pumps failures due to pollution of the working fluid with mechanical impurities in civil aviation. The article deals with experimental research the change of relative volume flow rate of plunger pump model NP-72M which depends on the working fluid purity. In particular, the negative effect of increasing the particle size of impurities (electrocorundum about 3 μm, 10 μm, 20 μm) and increasing particles concentration (about 25–150 mg/L) with the constant particle size on pump operation has presented. This has manifested in increased wear of rubbing parts and reduced the relative volume flow rate. A visual inspection of the pump parts has carried out, and the most damaged areas have identified.
Keyword : plunger pump, mechanical impurities, contaminated hydraulic fluid, relative volume flow rate, wear of rubbing parts
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References
Hong, Y. S., & Doh, Y. H. (2004). Analysis on the friction losses of a bent-axis type hydraulic piston pump. KSME International Journal, 18(9), 1668. https://doi.org/10.1007/BF02990382
Kovalev, M. A. (2009). Proactive maintenance of hydrosystems on the basis of the analysis of parameters of particles of contamination of hydraulic fluid. Vestnik of Samara University Aerospace and Mechanical Engineering, 19(3), 89-96.
Labunets, V. F., Tit V. A., & Dmitrenko, A. V. (2010). Prichinyi poteri trudosposobnosti truschihsya detaley aksialno-plunzhernyih gidravlicheskih nasosov. Problemi tertya ta znoshuvannya, (53), 120-127. (in Russian).
National Bureau on Investigation of Aviation Incidents and Incidents with Civil Aircraft. (2015). ANALIZ podii, shcho stalysia pid chas obsluhovuvannia povitrianykh suden na zemli v period z 2013 po 2015 rik (in Ukrainian). Retrieved from http://www.nbaai.gov.ua/uploads/pdf/Analysis_PPS.pdf
Wang, X., Lin, S., Wang, S., He, S., & Zhang, C. (2016). Remaining useful life prediction based on the Wiener process for an aviation axial piston pump. Chinese Journal of Aeronautics, 29(3), 779-788. https://doi.org/10.1016/j.cja.2015.12.020
The West-Siberian Interregional Territorial Department of Air Transport of Federal Air Transport Agency. (2015). Analiz sostoyaniya bezopasnosti poletov v aviapredpriyatiyah i ekspluatantah, podvedomstvennyih ZS MTU Rosaviatsii, v 2014 godu Novosibirsk 2015 – C. 110 (in Russian). Retrieved from http://www.sibfana.ru/files/Analiz_%202015.pdf
The West-Siberian Interregional Territorial Department of Air Transport of Federal Air Transport Agency. (2016). Analiz sostoyaniya bezopasnosti poletov v aviapredpriyatiyah i ekspluatantah, podvedomstvennyih ZS MTU Rosaviatsii, v 2015 godu Novosibirsk 2016 – C. 73 (in Russian). Retrieved from http://www.sibfana.ru/files/Analiz_2016(1).pdf
The West-Siberian Interregional Territorial Department of Air Transport of Federal Air Transport Agency. (2017). Analiz sostoyaniya bezopasnosti poletov v aviapredpriyatiyah i ekspluatantah, podvedomstvennyih ZS MTU Rosaviatsii, v 2016 godu Novosibirsk 2017 – C. 102 (in Russian). Retrieved from http://www.sibfana.ru/files/Analiz_2017.pdf