Diagnostic model of aircraft turbine engine governor pump

• Autorzy: Ohanian Ihor , Yepifanov Sergiy

Identyfikatory

DOI

10.2478/tar-2022-0012

• Języki publikacji: EN

Abstrakty

EN

This paper presents a mathematical model for a hydromechanical fuel governor pump, to be used in parametric diagnostics. The design and operation of the governor are described. The main requirements of the model are formulated, its structure is determined, corresponding to the specifics of the diagnostic task, and assumptions to make the model simpler are presented (single-dimensional flow and absence of heat exchange). The presented model consists of idealized elements with lumped parameters (such as pressure and mass consumption of the working fluid), accounting for the compressibility of the substance and the design arrangement of the governor (presence of mechanical rests, metering orifices of complex shapes, relay switchers, etc.). Equations of elements with lumped parameters, linked by hydraulic channels in one node, are presented. The model - a system of first-order differential-algebraic equations - is solved and the parameters of the governor pump are determined for different steady-state and transient operation modes. We compare our results to the requirements for the corresponding parameters outlined in the Engineering Specifications. The model is matched to the specifications by correcting setting parameters (tightening of elastic springs, areas of throttles, etc.), and a method of initial model linearization is developed. Based on the results, we conclude that our model can be used as a diagnostic algorithm for a governor pump, at the testing and development stages, during manufacturing, repair and maintenance.

Słowa kluczowe

EN

aircraft turbine engine; hydromechanical governor; governor pump; diagnostics; model; influence coefficients

• Wydawca: Wydawnictwa Naukowe Sieci Badawczej Łukasiewicz - Instytutu Lotnictwa
• Czasopismo: Transactions on Aerospace Research
• Rocznik: 2022
• Tom: Nr 2 (267)
• Strony: 80--95
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr., wzory

Twórcy

autor

Ohanian Ihor

• Aircraft Engine Design Department, Faculty of Aviation Engines, National Aerospace University “Kharkiv Aviation Institute”, 17 Chkalova St., Kharkiv, Ukraine

• https://orcid.org/0000-0003-1197-0160

autor

Yepifanov Sergiy

• Aircraft Engine Design Department, Faculty of Aviation Engines, National Aerospace University “Kharkiv Aviation Institute”, 17 Chkalova St., Kharkiv, Ukraine

• https://orcid.org/0000-0003-0533-9524

Bibliografia

• [1] Birger, I.A., 1978, Tekhnicheskaya diagnostika [Technical diagnostics], Mechanical Engineering Publishing, Moscow, pp. 97-105.
• [2] Bouamama, B.O., Biswas, G., Loureiro, R., Merzouki, R., 2014, “Graphical methods for diagnosis of dynamic systems: review,” Annual Reviews in Control, 38, pp. 199-219.
• [3] Fentaye, A., Baheta, A., Gilani, S., Kyprianidis, K., 2019, “A Review of Gas-Path Diagnostics: State-of-the-Art Methods, Challenges and Opportunities,” Aerospace, 6 (7), p. 83.
• [4] Yepifanov, S.V., Kuznetsov, B.I., Bogaenko, I.N., Grabovskij, G.G., Djukov, V.A., Kuz’menko, S.A., Rjumshin, N.A., Sameckij, A.A., 1998, Sintez sistem upravleniya i diagnostirovaniya gazoturbinnykh dvigateley [Synthesis of automatic control and diagnostics systems of gas turbine engines], Engineering Publishing, Kyiv, pp. 43-72.
• [5] Glikman, B.F., 1986, Matematicheskiye modeli pnevmogidravlicheskikh sistem [Mathematical models of pneumohydraulic systems], Science Publishing, Moscow, pp. 66-106.
• [6] Köster, M.A., 2017, “On Modeling, Analysis and Nonlinear Control of Hydraulic Systems,” Ph.D. thesis, Karlsruhe Institute of Technology.
• [7] Merritt, H.E., 1967, Hydraulic Control Systems, John Wiley & Sons, Inc., New York, London, Sydney, pp. 35-41.
• [8] Ascher, U.M., Petzold, L.R., 1998, Computer Methods for Ordinary Differential Equations and Differential-Algebraic Equations, SIAM. pp. 233-244.
• [9] Shampine, L. F., Reichelt, M.W., Kierzenka, J.A., 1999, “Solving Index-1 DAEs in MATLAB and Simulink,” SIAM Review, 41, pp. 538-552.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).