A turbo-electric transmission uses electric generators to convert the mechanical energy of a turbine (steam or gas) into electric energy and electric motors to convert it back into mechanical energy to power the driveshafts. gas turbine-electric locomotive or GTEL is a Locomotive that uses a Gas turbine to drive an Electric generator or Alternator. In Electricity generation, an electrical generator is a device that converts Mechanical energy to Electrical energy, generally using Electromagnetic A turbine is a rotary Engine that extracts Energy from a Fluid flow A steam turbine is a mechanical device that extracts Thermal energy from pressurized Steam, and converts it into useful mechanical work A gas turbine, also called a combustion turbine, is a rotary Engine that extracts energy from a flow of Combustion gas An electric motor uses Electrical energy to produce Mechanical energy.
Turbo-electric drives are used in some locomotives (gas turbines, e. A locomotive is a railway Vehicle that provides the motive power for a Train. g. with the first TGV) and ships (steam and sometimes gas turbines). The TGV ( t rain à g rande v itesse, French for "high-speed train" is France 's High-speed rail service The advantage of the turbo-electric transmission is that it allows the adaptation of high-speed turning turbines to the slow turning propellers or wheels without the need of a heavy and complex gearbox. A propeller is essentially a type of fan which transmits power by converting Rotational motion into Thrust for propulsion of a vehicle such as an A wheel is a circular device that is capable of rotating on its axis facilitating movement or transportation whilst supporting a load ( Mass) or performing labour in machines
A disadvantage shared with the more common diesel-electric powertrain is that because of the double conversion of mechanical energy to electricity and back more energy gets lost than with a mechanical transmission. A number of vehicles use a diesel-electric Powertrain for providing locomotion. For the UK engine manufacturer see Powertrain Ltd. In a Motor vehicle, the term drivetrain, powertrain or powerplant Gas turbine are however usually less energy efficient than equally sized diesel engines. Energy conversion efficiency is the Ratio between the useful output of an Energy conversion machine and the input in Energy terms A diesel engine is an Internal combustion engine which operates using the Diesel cycle (named after Dr Efficiency can be increased, if the exhaust gases of the gas turbine is used to generate steam which powers a steam turbine (Combined cycle/Combined gas and steam). A combined cycle is characteristic of a power producing engine or plant that employs more than one Thermodynamic cycle. Combined gas and steam (COGAS is the name given to marine compound powerplants comprising gas and Steam turbines the latter being driven by steam
See also
Ships With Turbo-Electric Drive
- SS Canberra- most powerful steam turbo-electric units in a passenger ship, 42,500 shp per shaft, 2 shafts
- USS Langley(CV-1)
- Lexington class aircraft carriers
- USS New Mexico (BB-40)
- Colorado class battleship
- USS Glenard P. Lipscomb (SSN-685)
- SS Normandie- most powerful steam turbo-electric passenger ship ever, 40,000 shp per shaft (50,000 shp at max power), 4 shafts
- RMS Queen Mary 2- powered by General Electric gas turbines in addition to her diesel generators to produce the power to drive her four Rolls-Royce MerMaid electric podded azimuth thrusters. gas turbine-electric locomotive or GTEL is a Locomotive that uses a Gas turbine to drive an Electric generator or Alternator. A steam turbine locomotive is a Steam locomotive which transmits steam power to the wheels via a Steam turbine. History P&O built the Canberra to operate the combined P&O- Orient Line service between the United Kingdom and Australia. Collier President William H Taft attended the ceremony when Jupiter' s keel was laid down on 18 October 1911 at the Mare Island Naval Shipyard Development The original battlecruiser design studies had much in common with Jackie Fisher 's "large light cruiser" concept studies were made on low-displacement Operational history Prior to World War II 1915 – 1918 Construction New Mexico was laid down 14 October 1915 by the New York Navy Yard Class history Built with Fiscal Year 1917 appropriations and delayed by higher priorities during World War I, two of the Colorado s were the last new U Commanding Officers Captain James F Caldwell Sr - Commissioning Skipper Origin The beginnings of Normandie can be traced to the Roaring Twenties when shipping companies started to look for new ships to replace the aging veterans Characteristics The Queen Mary 2 is the current Cunard Flagship and makes regular Transatlantic crossings A gas turbine, also called a combustion turbine, is a rotary Engine that extracts energy from a flow of Combustion gas Rolls-Royce plc ( is a British Aircraft engine maker and the second-largest in the world behind GE Aviation. An Azimuth thruster is a configuration of Ship propellers placed in pods that can be rotated in any horizontal direction making a Rudder unnecessary
- GTS Millennium
- T.E.V. Wahine (steam powered Turbine-Electric Vessel)
 driving an alternator |
 powering a motor |
 driving a propellor shaft |
External links
- Turboelectric drive in American Capital Ships @ www. TSS Wahine (1913 - 1951 was an inter-island Ferry that ran between Lyttelton and Wellington, New Zealand. History P&O built the Canberra to operate the combined P&O- Orient Line service between the United Kingdom and Australia. A steam turbine is a mechanical device that extracts Thermal energy from pressurized Steam, and converts it into useful mechanical work alternator is an electromechanical device that converts mechanical energy to Alternating current electrical energy An electric motor uses Electrical energy to produce Mechanical energy. A propeller is essentially a type of fan which transmits power by converting Rotational motion into Thrust for propulsion of a vehicle such as an navweaps. com
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