What is CODOG propulsion?
What is CODOG propulsion?
Combined diesel or gas (CODOG) is a type of propulsion system for ships that need a maximum speed that is considerably faster than their cruise speed, particularly warships like modern frigates or corvettes.
What is Codlag propulsion?
Combined diesel-electric and gas (CODLAG) is a modification of the combined diesel and gas propulsion system for ships. For higher speeds, a gas turbine powers the shafts via a cross-connecting gearbox; for cruise speed, the drive train of the turbine is disengaged with clutches.
How does CODAG work?
CODAG WARP uses two diesel engines to drive two propellers in a combined diesel and diesel (CODAD) arrangement, i.e., both shafts can also be powered by any single engine, and a centerline water jet powered by a gas turbine.
What is the most common propulsion system?
Diesel propulsion
Diesel propulsion is the most common system today. It offers greater efficiency than the steam turbine. Gas turbine systems are used mainly in naval ships where the need for speed is critical.
What is gas turbine?
A gas turbine is a combustion engine at the heart of a power plant that can convert natural gas or other liquid fuels to mechanical energy. This energy then drives a generator that produces the electrical energy that moves along power lines to homes and businesses.
How do diesel electric ships work?
In diesel-electric systems, multiple diesel engines, each driving an electric generator, produce the electric power that energizes the electric motors connected to the propellers as well as other electrical loads on the ship. Depending on electrical demand, not all diesel generators have to be operating at all times.
Why do trains use diesel-electric engines?
An early company offering “Oil-Electric” locomotives was the American Locomotive Company (ALCO). Diesel–electric powerplants became popular because they greatly simplified the way motive power was transmitted to the wheels and because they were both more efficient and had greatly reduced maintenance requirements.
What do you call a combined diesel and gas propulsion system?
Combined diesel-electric and gas (CODLAG) is a modification of the combined diesel and gas propulsion system for ships. A variant, called the combined diesel-electric or gas (CODLOG) system, contains the same basic elements but will not allow simultaneous use of the alternative drive sources.
What’s the difference between CODOG and gas turbines?
Both are connected to the shaft with clutches; only one system is driving the ship, in contrast to CODAG systems that can use the combined power output of both. The advantage of CODOG is a simpler gearing compared to CODAG, but it needs either more powerful or additional gas turbines to achieve the same maximum power output.
What kind of propulsion system is Renk CODAG?
In particular, RENK CODAG (combined Diesel And Gas turbine) power transmissions have been implemented with a wealth of applications such as the German Sachsen-class frigates or the US Coast Guard National Security Cutters.
What kind of propulsion system does a ship use?
Combined gas or gas (COGOG) is a propulsion system for ships using gas turbine engines. A high-efficiency, low output turbine is used for cruising speeds with a high output turbine being used for high-speed operations. A clutch allows either turbine to be selected, but there is no gearbox to allow the operation of both turbines at once.