Development of an automated hydraulic brake control system for testing aircraft turboshaft gas turbine engines

Authors

DOI:

https://doi.org/10.15587/1729-4061.2019.185539

Keywords:

hydraulic brake automation, loading characteristic, dynamic parameters, regulation law, transient characteristics

Abstract

To absorb the power generated by a free turbine, hydraulic brake systems of various designs are used in ground tests of aircraft turboshaft gas turbine engines. Ground tests of aircraft turboshaft gas turbine engines with the use of such hydraulic brakes can result in emergency modes of automated engine control in the area of operation of a free turbine speed regulator. Mismatch between the hydraulic brake loading characteristics and the loading characteristics of the rotor driven by a free turbine of the engine is the main cause of emergency operation of automated control systems.

The presented experimental loading characteristics of the hydraulic brake and the helicopter rotor show their significant difference in terms of gain. To eliminate this difference, a possibility of modeling dynamic parameters of rotors by simple automation means was considered. To solve this problem, a linear dynamic model and a block diagram of an automated hydraulic brake control system for ground testing of turboshaft gas turbine engines were elaborated. The law of regulation of the hydraulic brake loading was substantiated. A structurally dynamic diagram of the developed automated control system was presented and calculation formulas for determining the regulator parameters were given. Transient characteristics of the hydraulic brake unit without automation means and with the use of an automated loading control system were calculated. The presented calculation results have shown that the use of automation make it possible to fully emulate characteristics of the helicopter rotors

Author Biographies

Petro Kachanov, National Technical University «Kharkiv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Professor, Head of Department

Department of Automation and Control in Technical Systems

Oleksandr Lytviak, National University of Civil Defence of Ukraine Chernyshevska str., 94, Kharkiv, Ukraine, 61023

Кандидат технических наук, доцент

Кафедра автоматических систем безопасности и информационных технологий

Oleksandr Derevyanko, National University of Civil Defence of Ukraine Chernyshevska str., 94, Kharkiv, Ukraine, 61023

PhD, Associate Professor, Head of Department

Department of Automatic Security Systems and Information Technologies

Sergii Komar, Ivan Kozhedub Kharkiv University of Air Force Sumska str., 77/79, Kharkiv, Ukraine, 61023

PhD, Associate Professor, Senior Lecturer

Department of Design and Strength of Aircraft and Engines

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Published

2019-12-02

How to Cite

Kachanov, P., Lytviak, O., Derevyanko, O., & Komar, S. (2019). Development of an automated hydraulic brake control system for testing aircraft turboshaft gas turbine engines. Eastern-European Journal of Enterprise Technologies, 6(2 (102), 52–57. https://doi.org/10.15587/1729-4061.2019.185539

Issue

Vol. 6 No. 2 (102) (2019): Information technology. Industry control systems

Section

Industry control systems

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Copyright (c) 2019 Petro Kachanov, Oleksandr Lytviak, Oleksandr Derevyanko, Sergii Komar

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