A seleção dos motores diesel para a propulsão naval: o caso de estudo das Fragatas Classe "Tamandaré"

Abstract

The main objective of this research is to analyze the advantages of diesel engines in naval propulsion, with a special focus on the selection of the propulsion system for the "Tamandaré" Class Frigates of the Brazilian Navy. The study commences with an understanding of the Ideal Diesel Cycle, which serves as a fundamental basis for comprehending the various components of the propulsion system. Subsequently, it explores the different types of diesel engines, classifying them based on their operating principles and ranges of rotational speed, all while identifying their applications in naval propulsion. The research then proceeds with an analysis of the stages involved in selecting naval propulsion systems, with an emphasis on seeking solutions that optimize the efficiency and reliability of the propulsion engines. The performance indices of the MAN 12V 28/33D STC engine are presented and meticulously discussed. A comprehensive comparison is then conducted between the performance indices of escort ships currently in operation in the Brazilian Navy and those of the new frigate class, allowing for a detailed analysis of the differences and advantages. Finally, the study concludes with an analysis of the reasons for the preference for diesel engines in naval propulsion, particularly in the context of the Brazilian Navy.