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General Electric LM2500
The General Electric LM2500 is an industrial and marine gas turbine produced by GE Aviation. The LM2500 is a derivative of the General Electric CF6 aircraft engine. As of 2004, the U.S. Navy and at least 29 other navies had used a total of more than one thousand LM2500/LM2500+ gas turbines to power warships. Other uses include hydrofoils, hovercraft and fast ferries. In 2012, GE developed an FPSO version to serve the oil and gas industry's demand for a lighter, more compact version to generate electricity and drive compressors to send natural gas through pipelines. Design and development The LM2500 was first used on the US Navy in 1969, after the original FT-4 gas turbines experienced many technical problems. Later, they were used in US Navy warships in the of destroyers and the related , which were constructed from 1970. In this configuration it was rated to . This configuration was subsequently used into the 1980s in the s, and s. It was also used by one of People's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeroderivative Gas Turbine
A gas turbine or gas turbine engine is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the direction of flow: * a rotating gas compressor * a combustor * a compressor-driving turbine. Additional components have to be added to the gas generator to suit its application. Common to all is an air inlet but with different configurations to suit the requirements of marine use, land use or flight at speeds varying from stationary to supersonic. A propelling nozzle is added to produce thrust for flight. An extra turbine is added to drive a propeller (turboprop) or ducted fan (turbofan) to reduce fuel consumption (by increasing propulsive efficiency) at subsonic flight speeds. An extra turbine is also required to drive a helicopter rotor or land-vehicle transmission (turboshaft), marine propeller or electrical generator (power turbine). Greater thrust-to-w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hindustan Aeronautics Limited
Hindustan Aeronautics Limited (HAL) is an Indian public sector aerospace and defence company, headquartered in Bengaluru. Established on 23 December 1940, HAL is one of the oldest and largest aerospace and defence manufacturers in the world. HAL began aircraft manufacturing as early as 1942 with licensed production of Harlow PC-5, Curtiss P-36 Hawk and Vultee A-31 Vengeance for the Indian Air Force. HAL currently has 11 dedicated Research and development (R&D) centres and 21 manufacturing divisions under 4 production units spread across India. HAL is managed by a board of directors appointed by the President of India through the Ministry of Defence (India), Ministry of Defence, Government of India. In 2024, the company was given Public Sector Undertakings in India, Maharatna status. HAL is currently involved in the designing and manufacturing of fighter jets, helicopters, jet engine and marine gas turbine engine, avionics, hardware development, spares supply, overhauling and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Navy
The Indian Navy (IN) (ISO 15919, ISO: ) is the Navy, maritime and Amphibious warfare, amphibious branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of the Naval Staff (India), Chief of Naval Staff, a four-star rank, four-star Admiral (India), admiral, commands the navy. As a blue-water navy, it operates significantly in the Persian Gulf, Persian Gulf Region, the Horn of Africa, the Strait of Malacca, and routinely conducts anti-piracy operations with other navies in the region. It also conducts routine two to three month-long deployments in the South China Sea, South and East China Sea, East China seas as well as in the western Mediterranean Sea, Mediterranean sea simultaneously. The primary objective of the navy is to safeguard the nation's maritime borders, and in conjunction with other Indian Armed Forces, Armed Forces of the union, act to deter or defeat any threats or aggression against the territory, people or m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spanish Navy
The Spanish Navy, officially the Armada, is the Navy, maritime branch of the Spanish Armed Forces and one of the oldest active naval forces in the world. The Spanish Navy was responsible for a number of major historic achievements in navigation, the most famous being the voyages of Christopher Columbus, discovery of North America and the Magellan's circumnavigation, first global circumnavigation. For several centuries, it played a crucial logistical role in the expansion and consolidation of the Spanish Empire, and defended a vast trade network across the Atlantic Ocean between the Spanish treasure fleet, Americas and Europe, and the Manila Galleon across the Pacific Ocean between the Spanish East Indies, Philippines and the Americas. The Spanish Navy was one of the most powerful maritime forces in the world from the late 15th century to mid-18th century. In the early 19th century, with the Spanish American wars of independence, loss of most of its empire, the Spanish navy trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Thai Navy
The Royal Thai Navy (Abbreviation, Abrv: RTN, ทร.; , ) is the Navy, naval warfare force of Thailand. Established in 1906, it was modernised by the Admiral Prince Abhakara Kiartiwongse (1880–1923) who is known as the father of the Royal Navy. It has a structure that includes the naval fleet, Royal Thai Marine Corps, and Air and Coastal Defence Command. The RTN headquarters is at Sattahip Naval Base. The navy operates three naval area commands (NAC): Northern Gulf of Thailand (First NAC); Southern Gulf of Thailand (Second NAC); and the Andaman Sea (Indian Ocean) (Third NAC). RTN also has two air wings and one flying unit on its aircraft carrier. History Ancient era The military history of Thailand encompasses 1,000 years of armed struggle, from wars with her regional rivals, Burma and Vietnam, and periods of conflict with Britain and France during the colonial era. The naval arm of the army consisted mainly of riverine war craft whose mission was to control the Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italian Navy
The Italian Navy (; abbreviated as MM) is one of the four branches of Italian Armed Forces and was formed in 1946 from what remained of the ''Regia Marina'' (Royal Navy) after World War II. , the Italian Navy had a strength of 30,923 active personnel, with approximately 184 vessels in service, including minor auxiliary vessels. It is considered a multiregional and a blue-water navy. History Before and during World War II The ''Regia Marina'' was formed on 17 March 1861, after the proclamation of the Kingdom of Italy. The Italian Navy assumed its present name after the Italian monarchy was abolished following a popular referendum held on 2 June 1946. After World War II At the end of its five years involvement in World War II, Italy was a devastated nation. After the end of hostilities, the ''Regia Marina'' – which at the beginning of the war was the fourth largest navy in the world, with a mix of modernised and new battleships – started a long and complex rebuilding proce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Carrier
An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and hangar facilities for supporting, arming, deploying and recovering carrier-based aircraft, shipborne aircraft. Typically it is the capital ship of a naval fleet, fleet (known as a carrier battle group), as it allows a naval force to power projection, project seaborne naval aviation, air power far from homeland without depending on local airfields for staging area, staging aerial warfare, aircraft operations. Since their inception in the early 20th century, aircraft carriers have evolved from wooden vessels used to deploy individual tethered reconnaissance balloons, to nuclear marine propulsion, nuclear-powered supercarriers that carry dozens of fighter aircraft, fighters, strike aircraft, military helicopters, airborne early warning and control, AEW&Cs and other types of aircraft such as unmanned combat aerial vehicle, UCAVs. While heavier fixed-wing aircraft such as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COGAG
Combined gas turbine and gas turbine (COGAG) is a type of propulsion system for ships using two gas turbines connected to a single propeller shaft. A gearbox and clutches allow either of the turbines to drive the shaft or both of them combined. Marine usage of COGAG systems are similar to those found ashore. Description A COGAG system consists of two gas turbines, each connected to a reduction gearbox. These are each attached to a coupling with both connected to larger gearbox and then to the ship's propeller. Advantages and disadvantages Advantages of the system include a large degree of automation along with quick startup time, they are easier to silence and protect from shock. Compared to combined diesel and gas (CODAG) or combined diesel or gas (CODOG), COGAG systems have a smaller footprint but a much lower fuel efficiency at cruise speed and for CODAG systems it is also somewhat lower for high speed dashes. Issues with COGAG systems include their complexity and gearbox is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combined Diesel-electric And Gas
Combined may refer to: * Alpine combined (skiing), the combination of slalom and downhill skiing as a single event ** Super combined (skiing) * Nordic combined (skiing), the combination of cross country skiing and ski jumping as a single event * The Combined (Group), a criminal organization * CombinedX, a Swedish group of IT companies See also * * Combo (other) * Combine (other) Combine may refer to: Machinery * Combine harvester, or combine, a machine to harvest grain crops * Seed drill, or combine seeder, a machine to plant seeds Company structure * Corporate group A corporate group, company group or business ... * Combination (other) {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combined Diesel And Gas
Combined diesel and gas (CODAG) 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. Pioneered by Germany with the , a CODAG system 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 cannot continue to operate without changing the gear ratios of their transmissions. Because of that, special multi-speed gearboxes are needed. This contrasts to combined diesel or gas (CODOG) systems, which couple the diesels with a simple, fixed ratio gearbox to the shaft, but disengage the diesel engines when the turbine is powered up. For an example the new CODAG-propelled s of the Royal Norwegian Navy, the gear ratio for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Land, Infrastructure, Transport And Tourism
The , abbreviated MLIT, is a ministry of the Japanese government.国土交通省設置法 , Ministry of Internal Affairs and Communications. It is responsible for one-third of all the laws and orders in Japan and is the largest Japanese ministry in terms of employees, as well as the second-largest executive agency of the Japanese government after the Ministry of Defense. The ministry oversees four external agencies including the , the |
