Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Key design calculation, measurement and correction of ship propulsion shaft alignment
Submission Author:
Marcelo dos Reis Farias , RJ
Co-Authors:
Marcelo dos Reis Farias, Luiz Antonio Vaz Pinto, Luiz Augusto Rocha Baptista, Antônio Carlos Troyman
Presenter: Marcelo dos Reis Farias
doi://10.26678/ABCM.COBEM2021.COB2021-1256
Abstract
The propulsion system certainly represents one of the most critical areas of the design, operation, and maintenance of a vessel. In this area, the propulsion shaft alignment can be highlighted as one of the most important subjects. An improperly aligned system can generate many unwanted consequences such as: bearings overheating, bearings failure, excessive vibrations, gears wear down, engine bearing failure, leaks, shaft fatigue failure, environmental pollution, ship and crew safety compromised.The alignment of a propeller shafts involves several variables and issues that influence the system condition, such as: the calculation of alignment, hull flexibility, dynamic effects, different types of propulsion systems, fatigue life calculations, acceptance criteria, thermal compensation, component misalignment (such as gears), measurement methods, alignment verificationand correction techniques. This paperpresents an overview of the different steps on calculation, measurement, execution,and correction of the propeller shaft alignment systems, considering the main factors that influence it and the care that must be taken to ensure a correct system functioning.
Keywords
Alignment, shaft, ship, shaft alignment, ship propulsion, key considerations
