Application of simulation models of the hydraulic system and flight control actuators in aircraft operation

The paper considers the application of a simulation model of the hydraulic system and actuation devices of the flight control system during aircraft operation. The relevance of using simulation models in aircraft operation or design is formulated. The results of developing Simulink-models of the hydraulic system supply circuit and the consumers in the roll and pitch channels are presented, intended for analyzing changes in aircraft flight parameters under deviations from nominal operating conditions of system components. The development process of a simulation model for external loads on the actuator rod is considered. The integration of the simulation model of the hydraulic system and control actuators into a model of aircraft spatial motion is presented. The process of generating a control action based on the PID (proportional-integral-derivative) controller is examined. The results of simulation modeling of the isolated operation of the control actuators and hydraulic system are presented, based on which the external and internal factors affecting control surface deflection are identified, and the load characteristic of the actuator under various hydraulic system operating modes is determined. A simulation of the “combat turn” maneuver was performed under different hydraulic system operating modes, and the results are used to draw conclusions regarding the impact of system failures on aircraft flight parameters. An analysis was made comparing the simulation results with and without accounting for the hydraulic system model functioning. The conclusion is drawn about the feasibility of applying the developed simulation model of the hydraulic system and control actuators both during aircraft operation and at the design stage. 

1. Ermakov, S.A., Obolenskiy, Yu.G., Sukhorukov, R.V. (2011). Introduction to the design of aircraft rudder actuator systems: Tutorial. Moscow: Izdatelsvo GUP g. Moskvy “Okruzhnaya gazeta YUZAO”, 343 p. (in Russian)

2. Vereshchikov, D.V., Nikolayev, S.V., Razuvayev, D.V. (2018). Aircraft control systems: Textbook. Voronezh: VUNTS VVS “VVA”, 322 p. (in Russian)

3. Vereshchikov, D.V., Kostin, P.S., Ivashkov, S.S. (2023). Aircraft control system. Simulation modeling of aircraft flight dynamics using Matlab&Simulink: Tutorial. Voronezh: VUNTS VVS “VVA”, 168 p. (in Russian)

4. Ruppel, A.A., Sagandykov, A.A., Korytov, M.S. (2009). Modeling of hydraulic systems in MATLAB: Tutorial. Omsk: SEI SibADI, 172 p. (in Russian)

5. Matveenko, A.M., Peyko, Ya.N., Komarov, A.A. (1974). Calculation and testing of aircraft hydraulic systems. Moscow: Machinostroyeniye, 181 p. (in Russian)

6. Malchenko, A.A., Dvornikov, V.V., Fedotov, A.A. (2023). Simulation modeling of a hydraulic system using a hydraulic valve. In: Aviatsiya: istoriya, sovremennost, perspektivy razvitiya: materialy VIII Mezhdunarodnoy nauchno-prakticheskoy konferentsii, posvyashchennoy 90-letiyu grazhdanskoy aviatsii Respubliki Belarus. Minsk, pp. 87–89. (in Russian)

7. Medvedev, D.D., Grishchenko, V.I., Ivliev, E.A., Sidorenko, V.S. (2023). Mathematical modeling of low flow hydraulic plunger pump. Izvestia TulGU. Tekhnicheskie nauki, vol. 12, pp. 335–342. DOI: 10.24412/20716168-2023-12-335-336 (in Russian)

8. Gamynin, N.S. (1972). Hydraulic actuator for control systems. Moscow: Machinostroyeniye, 376 p. (in Russian)

9. Konstantinov, S.V., Redko, P.G., Ermakov, S.A. (2006). Electrohydraulic steering actuators of maneuvering aircraft flight control systems: Tutorial. Moscow: Yanus-K, 313 p. (in Russian)

10. Vereshchikov, D.V. (2021). System of differential equations of aircraft spatial motion dynamics with arbitrary tensor of inertia and center of gravity position. Vestnik of Samara University. Aerospace and Mechanical Engineering, vol. 20, no. 2, pp. 7–18. DOI: 10.18287/2541-7533-2021-20-2-7-18 (in Russian)

11. Levickiy, S.V., Sviridov, N.A. (2008). Flight dynamics: Textbook for trainees of Zhukovskiy VVIA. Moscow: Izdatelstvo VVIA im. prof. N.Ye. Zhukovskogo, 527 p. (in Russian)

12. Bushgens, G.S. (1998). Aerodynamics, stability and controllability of supersonic airplanes. Moscow: Nauka, Fizmatlit, 816 p. (in Russian)

13. Konstantinov, S.V., Kuznetsov, I.P., Parshin, A.A., Shitov, V.Yu. (2013). Development of requirements for dynamic characteristics and combat parameters of control loops of the steering drive of a prospective maneuverable aircraft. Polet. Obsherossiyskiy nauchno-technicheskiy zhurnal, no. 12, pp. 26–40. (in Russian)

14. Bobrin, M.A., Klemina, L.G., Shestakov, I.N. (2023). Intelligent system for automatic in-flight monitoring of aircraft hydraulic system. In: Idei Tsiolkovskogo v teoriyakh osvoyeniya kosmosa: materialy 58 Nauchnykh chteniy, posvyashennykh razrabotke nauchnogo naslediya i razvitiyu idey K.E. Tsiolkovskogo. Kaluga: IP Streltsov I.A., pp. 341–344. (in Russian)

15. Kuznetsov, V.E. (2017). Adaptive control of electrohydraulic actuators of aircraft rudder systems: Abstract of D. tech. Sc. dissertation. St. Petersburg, 32 p. (in Russian)

16. Nikolaev, S.V., Zhidelev, A.V. (2019). Evaluation of the reliability of the results of modeling the processes of functioning of aviation complexes. Aviakosmicheskoye priborostroyeniye, no. 5, pp. 26–33. DOI: 10.25791/aviakosmos.05.2019.637 (in Russian)