Detection and analysis of metal scrap in lubricating oil based on wear fault of spindle bearing of turboshaft engine

The friction torque inside the high-speed spindle bearing determines the performance of the friction, wear, heat, temperature rise and life of the bearing. Aim to analyze the high-speed spindle bearing dynamic characteristics, considering the influence of cage and internal lubricating oil-film, a quasi-static improved model of high-speed spindle bearing was developed. And a new method for calculating the friction torque of the bearing based on the quasi-static improved model was put forward. Then the theory and experiment were validated systematically. The results show that the quasi-static improved model is correct, and the method of calculating the friction torque of high-speed spindle bearing based the quasi-static improved model is feasible and reliable.

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EXPERIMENTAL AND NUMERICAL STUDY ON AN AXIAL COMPRESSOR OF A TURBOSHAFT ENGINE

Proceeding of Proceedings of CONV-14: International Symposium on Convective Heat and Mass Transfer. June 8 - 13, 2014, Kusadasi, Turkey ◽

10.1615/ichmt.2014.intsympconvheatmasstransf.460 ◽

2014 ◽

Author(s):

E. Nadir Kacar ◽

Volkan Tatar

Keyword(s):

Numerical Study ◽

Axial Compressor ◽

Turboshaft Engine

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Numerical Modeling of the RDE

Transactions on Aerospace Research ◽

10.2478/tar-2020-0019 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Michal Folusiak ◽

Karol Swiderski ◽

Piotr Wolański

Keyword(s):

Combustion Chamber ◽

Turbine Engine ◽

Rotating Detonation Engine ◽

University Of Technology ◽

Detonation Combustion ◽

Detonation Engine ◽

Innovative Economy ◽

Turboshaft Engine ◽

The University ◽

Rotating Detonation

AbstractThe idea of using the phenomenon of rotating detonation to propulsion has its roots in fifties of the last century in works of Adamson et al. and Nicholls et al. at the University of Michigan. The idea was recently reinvented and experimental research and numerical simulations on the Rotating Detonation Engine (RDE) are carried in numerous institutions worldwide, in Poland at Warsaw University of Technology (WUT) since 2004. Over the period 2010-2014 WUT and Institute of Aviation (IOA) jointly implemented the project under the Innovative Economy Operational Programme entitled ‘Turbine engine with detonation combustion chamber’. The goal of the project was to replace the combustion chamber of turboshaft engine GTD-350 with the annular detonation chamber.This paper is focused on investigation of the influence of a geometry and flow conditions on the structure and propagation stability of the rotating detonation wave. Presented results are in majority an outcome of the aforementioned programme, in particular authors’ works on the development of the in-house code REFLOPS USG and its application to simulation of the rotating detonation propagation in the RDE.

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