Study on the Dynamic Modelling of the Rotor System of the Turbofan Engine with a Double Rotor Structure

Authors

  • Ri CholUk  School of Mechanical Technology, KimChaek University of Technology, Pyongyang, Democratic People’s Republic of Korea
  • Zhang ZhunHyok  School of Mechanical Technology, KimChaek University of Technology, Pyongyang, Democratic People’s Republic of Korea
  • Chae ChungHyok  KimIlSung University, Pyongyang, Democratic People’s Republic of Korea
  • Om HyonChol  KimIlSung University, Pyongyang, Democratic People’s Republic of Korea
  • Ri CholSu  School of Mechanical Technology, KimChaek University of Technology, Pyongyang, Democratic People’s Republic of Korea
  • Kim PunHui  School of Mechanical Technology, KimChaek University of Technology, Pyongyang, Democratic People’s Republic of Korea
  • Im JongHun  School of Mechanical Technology, KimChaek University of Technology, Pyongyang, Democratic People’s Republic of Korea

Keywords:

Double Rotor System, Eccentricity, High Pressure Turbine, Low Pressure Turbine, Mathematical Model

Abstract

The gas turbine engine is directly related to whether the engine, as the heart of the plane, can work normally and the flight stability of the plane. In addition, the rotor system is also a core part of the gas turbine engine and is a fundamental vibration source. Therefore, in this dissertation, the task of research was to create a mathematical model of the rotor system of the turbofan engine with a double rotor structure. First, the model of a single rotor system was made. The modeling method of a simple single rotor system with one disk and two supports was specifically mentioned. Next, the mathematical modelling method of the rotor system of the turbofan engine with a double rotor structure was mentioned. The gas turbine engine rotor system is composed of a low-pressure rotor part and a high-pressure rotor part. Firstly, the mathematical model of low pressure rotor system of double rotor system was built. In modelling, the effects of asymmetry, mass eccentricity, and gyroscopic effect of the low-pressure rotor system were fully considered and the differential equation of the low-pressure rotor system was written by utilizing Lagrange equation. Next, a differential equation of a high pressure rotor system was formulated, considering sufficient conditions such as low pressure rotor system.

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IInternational Journal of Scientific Research in Mechanical and Materials Engineering

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Published

2021-03-30

Issue

Volume 5, Issue 2, March-April-2021

Section

Research Articles

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Copyright (c) IJSRMME

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
Ri CholUk, Zhang ZhunHyok, Chae ChungHyok, Om HyonChol, Ri CholSu, Kim PunHui, Im JongHun, " Study on the Dynamic Modelling of the Rotor System of the Turbofan Engine with a Double Rotor Structure, IInternational Journal of Scientific Research in Mechanical and Materials Engineering(IJSRMME), ISSN : 2456-3307, Volume 5, Issue 2, pp.18-26, March-April-2021.