High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Combined diesel and gas (CODAG) is a type of propulsion system for ships which need a maximum speed that is considerably faster than their cruise speed, particularly warships like modern frigates or corvettes. Principle of a CODAG system, with two speed diesel gearboxes It consists of diesel engines for cruising and gas turbines that can be switched on for high-speed transits. In most cases the difference of power output from diesel engines alone to diesel and turbine power combined is too large for controllable pitch propellers to limit the rotations so that the diesels can continue to operate without changing the gear ratios of their transmissions. Because of that, special multi-speed gearboxes are needed. This contrasts to CODOG systems, which couple the diesels with a simple, fixed ratio gearbox to the shaft and disengage them, when the turbine is switched on.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.