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Canon De 138 Mm Modèle 1927
The Canon de 138 mm Modèle 1927 was a medium-calibre gun of the French Navy used during World War II. It was derived from a German World War I design. It was used on the destroyers of the ''Aigle'' and ''Vauquelin'' classes and the ''Bougainville''-class sloops. Description The 40-calibre ''Mle 1927'' was derived from the German World War I ''15 cm L/45 UToF'' gun as mounted on the large torpedo boat SMS S113 received by France as war reparations. It copied the German gun's semi-automatic action and its horizontal sliding-block breech. It had an autofretted, monobloc barrel. It used of powder to push a shell to a muzzle velocity of .Campbell, p. 298 Mounting The ''Mle 1927'' was used in single centre-pivot mountings that weighed approximately that were fitted with a thick gun shield A U.S. Marine manning an M240 machine gun equipped with a gun shield A gun shield is a flat (or sometimes curved) piece of armor designed to be mounted on a crew-served weapon such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Musée National De La Marine
The Musée national de la Marine (; "National Navy Museum") is a maritime museum located in the Palais de Chaillot, Trocadéro, in the 16th arrondissement of Paris. It has annexes at Brest, Port-Louis, Rochefort ( Musée National de la Marine de Rochefort), and Toulon. The permanent collection originates in a collection that dates back to Louis XV of France. History In 1748, Henri-Louis Duhamel du Monceau offered a collection of models of ships and naval installations to Louis XV of France, with the request that the items be displayed at the Louvre and made available to students of the Naval engineers school, which Duhamel headed. The collection was put on display in 1752, in a room of the first floor, next to the Academy of Sciences; the room was called "''Salle de Marine''" (Navy room), and was used for teaching. With the French Revolution, the Salle de Marine closed in 1793. The collection was added to models owned by the King personally, to others owned by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bougainville-class Sloop
The ''Bougainville'' class was a group of colonial avisos, or sloops, built for the French Navy during the 1930s. They were designed to operate in the remote locations of the French Empire. Design and description The ''Bougainville''-class avisos were intended for colonial service abroad in austere conditions. Endurance was one of the primary considerations as were living conditions in tropical climates for the crew. The ships also had to accommodate an admiral and his staff as they could serve as the flagship for the overseas divisions of the French Navy. The ships were equipped with air conditioning throughout and the crew's living spaces were insulated as well. The last two ships, ''Beautemps-Beaupré'' and ''La Pérouse'', were to be completed to a modified design with a single funnel as survey ships. They had an overall length of , a beam of , and a draught of . The ships displaced at standard load and at deep load. The hull was subdivided by 10 transverse bulkheads ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Guns Of France
A navy, naval force, military maritime fleet, war navy, or maritime force is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operations and related functions. It includes anything conducted by surface ships, amphibious ships, submarines, and seaborne aviation, as well as ancillary support, communications, training, and other fields. The strategic offensive role of a navy is projection of force into areas beyond a country's shores (for example, to protect sea-lanes, deter or confront piracy, ferry troops, or attack other navies, ports, or shore installations). The strategic defensive purpose of a navy is to frustrate seaborne projection-of-force by enemies. The strategic task of a navy also may incorporate nuclear deterrence by use of submarine-launched ballistic missiles. Naval operations can be broadly divided between riverine and littoral applications (brown-water nav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II Naval Weapons
The world is the totality of entities, the whole of reality, or everything that exists. The nature of the world has been conceptualized differently in different fields. Some conceptions see the world as unique, while others talk of a "plurality of worlds". Some treat the world as one simple object, while others analyze the world as a complex made up of parts. In scientific cosmology, the world or universe is commonly defined as "the totality of all space and time; all that is, has been, and will be". Theories of modality talk of possible worlds as complete and consistent ways how things could have been. Phenomenology, starting from the horizon of co-given objects present in the periphery of every experience, defines the world as the biggest horizon, or the "horizon of all horizons". In philosophy of mind, the world is contrasted with the mind as that which is represented by the mind. Theology conceptualizes the world in relation to God, for example, as God's creation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gun Shield
A U.S. Marine manning an M240 machine gun equipped with a gun shield A gun shield is a flat (or sometimes curved) piece of armor designed to be mounted on a crew-served weapon such as a machine gun, automatic grenade launcher, or artillery piece. Military Some mounted machine guns and artillery pieces are equipped with metal armor plates to protect the gunners from small arms fire and shrapnel from explosions. They were fitted to some armored fighting vehicles and patrol boats during the Vietnam War. Gun shields fell out of widespread use after the Vietnam War, but they have seen a resurgence in popularity during the 1980s and 1990s. Israeli military analysts began urging the use of gun shields, pointing to the grave risk to soldiers exposed to fire from automatic weapons. In particular, it was noted that many casualties were hit in areas not protected by body armor or a helmet, such as the neck or face. The United States Armed Forces began using gun shields in the earl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autofrettage
Autofrettage is a work-hardening process in which a pressure vessel (thick walled) is subjected to enormous pressure, causing internal portions of the part to plastic yield, yield plastically, resulting in internal compressive residual stresses once the pressure is released. The goal of autofrettage is to increase the pressure-carrying capacity of the final product. Inducing residual compressive stresses into materials can also increase their resistance to stress corrosion cracking; that is, non-mechanically assisted cracking that occurs when a material is placed in a corrosive environment in the presence of tensile stress. The technique is commonly used in manufacture of high-pressure pump cylinders, warship and gun barrels, and fuel injection systems for diesel engines. Due to work-hardening process it also enhances wear life of the barrel marginally. While autofrettage will induce some work hardening, that is not the primary mechanism of strengthening. The start point is a si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SMS S113
Short Message Service, commonly abbreviated as SMS, is a text messaging service component of most telephone, Internet and mobile device systems. It uses standardized communication protocols that let mobile phones exchange short text messages, typically transmitted over cellular networks. Developed as part of the GSM standards, and based on the Signalling System No. 7, SS7 signalling protocol, SMS rolled out on digital cellular networks starting in 1993 and was originally intended for customers to receive alerts from their Mobile network operator, carrier/operator. The service allows users to send and receive text messages of up to 160 characters, originally to and from GSM phones and later also Code-division multiple access, CDMA and Digital AMPS; it has since been defined and supported on newer networks, including present-day 5G ones. Using SMS gateways, messages can be transmitted over the Internet through an Short Message service center, SMSC, allowing communication to compute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caliber
In guns, particularly firearms, but not #As a measurement of length, artillery, where a different definition may apply, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge (firearms), bore – regardless of how or where the bore is measured and whether the finished bore matches that specification. It is measured in inches or in millimetres, millimeters]ref name=barnes2016-p9> In the United States it is expressed in hundredths of an inch; in the United Kingdom in thousandths; and elsewhere in millimeters. For example, a US "45 caliber" firearm has a barrel diameter of roughly 0.45 inches (11.43mm). Barrel diameters can also be expressed using metric dimensions. For example, a "9 mm pistol" has a barrel diameter of about 9 millimeters. Since metric and US customary units do not convert evenly at this scale, metric conversions of caliber measured in decimal inches are typically approximations of the precise spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vauquelin-class Destroyer
The ''Vauquelin'' class was a group of six large destroyers () built for the French Navy () in the early 1930s. Entering service in 1933–1934, the sister ships spent most of their careers in the Mediterranean. During the Spanish Civil War of 1936–1939, they helped to enforce the non-intervention agreement. When France declared war on Germany in September 1939, all of the ''Vauquelin''s were assigned to the High Sea Forces ( (FHM)) which was tasked to escort French convoys and support the other commands as needed. Three of the sisters briefly deployed to Scotland in early 1940 to support the Allied forces in the Norwegian Campaign and was lost to an accidental explosion. The others returned to the Mediterranean in time to participate in Operation Vado, a bombardment of Italian coastal facilities after Italy entered the war in June. The Vichy French reformed the FHM after the French surrender in late June. After the Allies invaded French Lebanon and Syria in June 1941, wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Gun
Naval artillery is artillery mounted on a warship, originally used only for naval warfare and then subsequently used for more specialized roles in surface warfare such as naval gunfire support (NGFS) and anti-aircraft warfare (AAW) engagements. The term generally refers to powder-launched projectile-firing weapons and excludes self-propelled projectiles such as torpedoes, rockets, and missiles and those simply dropped overboard such as depth charges and naval mines. Origins The idea of ship-borne artillery dates back to the classical era. Julius Caesar wrote about the Roman navy's usage of ship-borne catapults against Celtic Britons ashore in his ''Commentarii de Bello Gallico''. The dromons of the Byzantine Empire carried catapults and Greek fire. From the Middle Ages onwards, warships began to carry cannons of various calibres. In the Battle of Tangdao in 1161, the Southern Song general Li Bao used huopao (a type of gunpowder weapons, possibly cannons) and fire arrows against ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aigle-class Destroyer
The ''Aigle''-class destroyers () were built for the French Navy during the 1930s. Design and description The ''Aigle''-class ships were improved versions of the preceding . They had an overall length of , a beam of ,Jordan & Moulin, p. 112 and a draft of . The ships displaced at standard load and at deep load. They had a metacentric height of and their hull was divided by a dozen transverse bulkheads into 13 watertight compartments. Their crew consisted of 10 officers and 198 crewmen in peacetime and 10 officers and 217 enlisted men in wartime. The ships were powered by two geared steam turbines, each driving one propeller shaft using steam provided by four du Temple boilers that operated at a pressure of and a temperature of . The turbines were designed to produce which was intended give the ships a speed of . They comfortably exceeded their designed speed; the fastest of the ships, , reached a speed of from during her sea trials. The ''Aigle''s carried of fuel oil whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War I
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting took place mainly in European theatre of World War I, Europe and the Middle Eastern theatre of World War I, Middle East, as well as in parts of African theatre of World War I, Africa and the Asian and Pacific theatre of World War I, Asia-Pacific, and in Europe was characterised by trench warfare; the widespread use of Artillery of World War I, artillery, machine guns, and Chemical weapons in World War I, chemical weapons (gas); and the introductions of Tanks in World War I, tanks and Aviation in World War I, aircraft. World War I was one of the List of wars by death toll, deadliest conflicts in history, resulting in an estimated World War I casualties, 10 million military dead and more than 20 million wounded, plus some 10 million civilian de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
