Responder a: Mecanismos de Propulsão

[fabio]

O PNA não afirma que as turbinas a gás são reversíveis. A turbina em sí gira somente num sentido, seja a vapor ou a gás combustível. O que pode ocorrer é que em navios elas sempre estão acopladas a mecanismos elétricos, e estes sim fazem a inversão de rotação.

Segue o texto da pg 129 : ” Marine gas turbines were fitted to a small number of merchant ships. But they are now frequently used in naval ships, sometimes associated with a diesel, steam turbine or smaller gas turbine. The latter are used for general cruising purposes, and the gas turbine is available at little or no notice when there is a demand for full power, both plants being connected to a common propeller shaft by clutches and gearing. The principal marine application so far has been to small and large destroyers and frigates and to smaller, high-speed craft, such as patrol craft and hydrofoils.”