|
S-80-class Submarine
The S-80 Plus class (or ''Isaac Peral'' class) is a Spanish class of four submarines—late-1990s design, initial production order in 2003, redesign/rebuild mid-2010s, and currently in production—being built by the state-owned Spanish company Navantia at its Cartagena shipyard for the Spanish Navy. In common with other contemporary submarines, they feature air-independent propulsion. They are oceanic submarines of medium tonnage with the capacity to carry out long duration missions in scenarios far from their base, acting with a minimum level of indiscretion. They will have an integrated platform control system that allows operation with a reduced endowment and a high degree of automation with remote control. The characteristics of this class of ships place them at a level close to those of nuclear propulsion. The lead boat in the class, the ''Isaac Peral'' ( es:Isaac Peral S-81), the first unit in the series, was launched by King Felipe VI and his daughter, Princess Leono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navantia
Navantia is a Spanish state-owned shipbuilding company, which offers its services to both military and civil sectors. It is the fifth-largest shipbuilder in Europe and the ninth-largest in the world with shipyards around the globe. The heir to the segregation of the military assets of the IZAR Group in 2005, Navantia designs, builds and supports all types of surface vessels, Submarine, submarines and systems. In addition, it is expanding into new markets diversifying its product, such as renewable energy, the offshore industry and all kinds of services that it requires by the Navy, naval industry. Company The origins of Navantia go back to the origins of Spanish naval construction, from the 13th century with Alfonso X of Castile, Alfonso X with the Seville Shipyard, Real Atarazanas de Sevilla and the Real Carenero of San Fernando, which took great relevance during the discovery of America until due to the increase of the size of the ships and their greater draft, in 1730 they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agosta-class Submarine
The ''Agosta''-class submarine is a class of diesel-electric fast-attack submarine developed and constructed by the French DCNS in the 1970s to succeed the submarines. The submarines have served in the French Navy as well as exported to the navies of Spain and Pakistan. It also used by Royal Malaysian Navy for the training purpose. They were replaced in French service by the nuclear attack submarines but are still in active service with the navies of Spain and Pakistan. The French Navy grouped this model of submarine in their most capable class as an ''océanique'', meaning "ocean-going." The ''Agosta'' class is named for its lead unit, , which in turn was named for the Battle of Augusta (french: Agosta) of 22 April 1676. Ships French Navy built by Arsenal de Cherbourg * ''Agosta'' (S 620) – completed 1977 – decommissioned 1997 * ''Bévéziers'' (S 621) – completed 1977 – decommissioned 1998 * ''La Praya'' (S 622) – completed 1978 – decommissioned 2000 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuel Cell
A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen fuel, hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair of redox reactions. Fuel cells are different from most battery (electricity), batteries in requiring a continuous source of fuel and oxygen (usually from air) to sustain the chemical reaction, whereas in a battery the chemical energy usually comes from substances that are already present in the battery. Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied. The first fuel cells were invented by Sir William Robert Grove, William Grove in 1838. The first commercial use of fuel cells came more than a century later following the invention of the hydrogen–oxygen fuel cell by Francis Thomas Bacon in 1932. The alkaline fuel cell, also known as the Bacon fuel cell after its inventor, has been used in NASA space programs since the mid-1960s to generate power for sat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogen
Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. At standard conditions hydrogen is a gas of diatomic molecules having the formula . It is colorless, odorless, tasteless, non-toxic, and highly combustible. Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all normal matter.However, most of the universe's mass is not in the form of baryons or chemical elements. See dark matter and dark energy. Stars such as the Sun are mainly composed of hydrogen in the plasma state. Most of the hydrogen on Earth exists in molecular forms such as water and organic compounds. For the most common isotope of hydrogen (symbol 1H) each atom has one proton, one electron, and no neutrons. In the early universe, the formation of protons, the nuclei of hydrogen, occurred during the first second after the Big Bang. The emergence of neutral hydrogen atoms throughout the universe occur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abengoa
Abengoa, S.A. was a Spanish multinational company in the green infrastructure, energy and water sectors. The company was founded in 1941 by Javier Benjumea Puigcerver and José Manuel Abaurre Fernández-Pasalagua, and was based in Seville, Spain. Its current chairman is Gonzalo Urquijo Fernández de Araoz. After repeated bankruptcies and rescues, it declared insolvency in February 2021 amid various regulatory and financial charges against the board and management, the second-largest corporate collapse in Spanish history. Abengoa invests in research in sustainable technology, and implements these technologies in Spain as well as exporting them globally. These technologies include concentrated solar power and desalination. In 2014, Abengoa and subsidiaries employed approximately 20,250 people, operating in more than 80 countries. Origin On 4 January 1941, Javier Benjumea Puigcerver and José Manuel Abaurre Fernández-Pasalagua, both engineers from the Instituto Católico ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bioethanol
Ethanol (abbr. EtOH; also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound. It is an alcohol with the chemical formula . Its formula can be also written as or (an ethyl group linked to a hydroxyl group). Ethanol is a volatile, flammable, colorless liquid with a characteristic wine-like odor and pungent taste. It is a psychoactive recreational drug, the active ingredient in alcoholic drinks. Ethanol is naturally produced by the fermentation process of sugars by yeasts or via petrochemical processes such as ethylene hydration. It has medical applications as an antiseptic and disinfectant. It is used as a chemical solvent and in the synthesis of organic compounds, and as a fuel source. Ethanol also can be dehydrated to make ethylene, an important chemical feedstock. As of 2006, world production of ethanol was , coming mostly from Brazil and the U.S. Etymology ''Ethanol'' is the systematic name defined by the International ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Project-75 (India) Submarine
The Project 75 (India)-class submarines, or P-75I, for short, are a planned class of diesel-electric submarines, which are to be built for the Indian Navy. The P-75I class is a follow-on of the P-75 class submarines of the Indian Navy. Under this project, the Indian Navy intends to acquire six conventional, diesel-electric attack submarines, which will also feature advanced capabilities - including air-independent propulsion (AIP), ISR, special operations forces (SOF), anti-ship warfare (AShW), anti-submarine warfare (ASW), anti-surface warfare (ASuW), land-attack capabilities and other features. All six submarines are expected to be constructed in India, under the Make in India initiative. History Origins In 1997, the Ministry of Defence (MoD) approved a plan to acquire 24 submarines under Project 75. After the Kargil War in 1999, the Cabinet Committee on Security (CCS) - India's top decision-making body on issues related to defense and national security, approved a 3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Navy
The Indian Navy is the maritime branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of Naval Staff, a four-star admiral, commands the navy. As a blue-water navy, it operates significantly in the Persian Gulf Region, the Horn of Africa, the Strait of Malacca, and routinely conducts anti-piracy operations and partners with other navies in the region. It also conducts routine two to three month-long deployments in the South and East China seas as well as the western Mediterranean sea simultaneously. The primary objective of the navy is to safeguard the nation's maritime borders, and in conjunction with other Armed Forces of the union, act to deter or defeat any threats or aggression against the territory, people or maritime interests of India, both in war and peace. Through joint exercises, goodwill visits and humanitarian missions, including disaster relief, the Indian Navy promotes bilateral relations between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ABC (newspaper)
''ABC'' () is a Spanish national daily newspaper. It is the second largest general-interest newspaper in Spain, number one in Madrid, and the oldest newspaper still operating in Madrid. Along with '' El Mundo'' and '' El País'', it is one of Spain’s three newspapers of record. History and profile ''ABC'' was first published in Madrid on 1 January 1903 by Torcuato Luca de Tena y Álvarez-Ossorio. The founding publishing house was Prensa Española, which was led by the founder of the paper, Luca de Tena. The paper started as a weekly newspaper, turning daily in June 1905. In 1928 ABC had two editions, one for Madrid and the other for Seville. The latter was named ''ABC de Sevilla''. On 20 July 1936, shortly after the Spanish Civil War began, ''ABC'' in Madrid was seized by the republican government, which changed the paper's politics to support the Republicans. The same year '' Blanco y Negro'', a magazine, became its supplement. The ''ABC'' printed in Seville was supportive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Dynamics Electric Boat
General Dynamics Electric Boat (GDEB) is a subsidiary of General Dynamics Corporation. It has been the primary builder of submarines for the United States Navy for more than 100 years. The company's main facilities are a shipyard in Groton, Connecticut, a hull-fabrication and outfitting facility in Quonset Point, Rhode Island, and a design and engineering facility in New London, Connecticut. History The company was founded in 1899 by Isaac Rice as the Electric Boat Company to build John Philip Holland's submersible ship designs, which were developed at Lewis Nixon's Crescent Shipyard in Elizabeth, New Jersey. ''Holland VI'' was the first submarine that this shipyard built, which became when it was commissioned into the United States Navy on April 11, 1900—the first submarine to be officially commissioned. The success of ''Holland VI'' created a demand for follow-up models (A class or ) that began with the prototype submersible ''Fulton'' built at Electric Boat. Some f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buoyancy
Buoyancy (), or upthrust, is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. The pressure difference results in a net upward force on the object. The magnitude of the force is proportional to the pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the submerged volume of the object, i.e. the displaced fluid. For this reason, an object whose average density is greater than that of the fluid in which it is submerged tends to sink. If the object is less dense than the liquid, the force can keep the object afloat. This can occur only in a n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz
Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia. Quartz is the mineral defini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_01.jpg "Click for more on -> Navantia")
