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RML 6.3 Inch Howitzer
The British ordnance terms#RML, RML 6.3-inch howitzer was a British Rifled muzzle-loader, rifled muzzle-loading "siege" or "position" howitzer/mortar proposed in 1874 and finally introduced in 1878 as a lighter version of the successful RML 8 inch howitzer, 8-inch howitzer that could be carried by the existing 40-pounder gun carriage.Treatise on Construction of Ordnance in the British Service, 1879, pages 79; 171; 259-260 By 1880, the RML was superseded by a longer RML 6.6-inch howitzer, howitzer with a higher muzzle velocity. Description The barrel consisted of an inner "A" tube of toughened Carbon steel#Mild or low-carbon steel, mild steel, surrounded by wrought-iron "B" tube and jacket. Rifling was of the "polygroove" type, with 20 grooves and a twist increasing from 1 turn in 100 calibres (i.e. ) to 1 in 35 (i.e. ). The howitzers could be mounted on either a travelling siege carriage, which enabled them to be semi-mobile, or on a steel bed, which were then positioned in fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RML 6
RML may refer to: *RML Group, a motorsports and high performance engineering company *RML 380Z, an 8-bit computer built in Britain *Ratmalana Airport (IATA: RML), near Colombo, Sri Lanka *Reuters Market Light, a phone service to provide Indian farmers with timely information *Revised Marriage Law, a 1980 revision of the New Marriage Law in China *Riemann Musiklexikon, a music encyclopedia *Rifled muzzle loader, a type of gun common in the 19th century *AEC Routemaster, a type of double-decker bus *Rocket Madsen Space Lab (RML Spacelab), Copenhagen, Denmark *Rocky Mountain Laboratories, a research institute in Montana, United States *Roddenbery Memorial Library, in Cairo, Georgia, United States *Royal Mail Lines, once a major shipping company, the successor to the Royal Mail Steam Packet Company See also * {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howitzer
A howitzer () is a long- ranged weapon, falling between a cannon (also known as an artillery gun in the United States), which fires shells at flat trajectories, and a mortar, which fires at high angles of ascent and descent. Howitzers, like other artillery equipment, are usually organized in a group called a battery. Howitzers, together with long-barreled guns, mortars, and rocket artillery, are the four basic types of modern artillery. Mortars fire at angles of elevation greater than 45°, and are useful for mountain warfare because the projectile could go over obstacles. Cannons fire at low angles of elevation (<45°), and the projectile lands much faster at its target than it would in the case of a mortar. But the cannon is not useful if there is an obstacle like a hill/wall in front of its target. Etymology The English word ''howitzer'' comes from the Czech word , from , 'crowd', and is in turn a borrowing from the Middle High German word or (mode ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artillery Of The United Kingdom
Artillery is a class of heavy military ranged weapons that launch munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during sieges, and led to heavy, fairly immobile siege engines. As technology improved, lighter, more mobile field artillery cannons developed for battlefield use. This development continues today; modern self-propelled artillery vehicles are highly mobile weapons of great versatility generally providing the largest share of an army's total firepower. Originally, the word "artillery" referred to any group of soldiers primarily armed with some form of manufactured weapon or armor. Since the introduction of gunpowder and cannon, "artillery" has largely meant cannons, and in contemporary usage, usually refers to shell-firing guns, howitzers, and mortars (collectively called ''barrel artillery'', ''cannon artillery'', ''gun artillery'', or - a layman term - ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Howitzers
Howitzers are one of two primary types of field artillery. Historically, howitzers fired a heavy shell in a high-trajectory from a relatively short barrel and their range was limited but they were slightly more mobile than similar size field guns. Since the end of World War II, howitzers have gained longer barrels and hence increased range to become gun-howitzers. Towed howitzers Self-propelled howitzers Fixed howitzers {, class="wikitable sortable" style="font-size:100%;" ! width="12%", Caliber (mm) ! width="44%", Weapon name ! width="22%", Country of origin ! width="22%", Usage , - , 406 , , 16-inch howitzer M1920 , , , , World War II , - , 420 , , 42 cm Gamma-Gerät , , / {{flag, Nazi Germany , , World War I / World War II , - Howitzer A howitzer () is a long- ranged weapon, falling between a cannon (also known as an artillery gun in the United States), which fires shells at flat trajectories, and a mortar, which fires at high angles of ascent an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Heritage Resource Agency
The South African Heritage Resources Agency (SAHRA) is the national administrative body responsible for the protection of South Africa's cultural heritage. It was established through the ''National Heritage Resources Act, number 25 of 1999'' and together with provincial heritage resources authorities is one of the bodies that replaced the National Monuments Council. Heritage Listings in South Africa * List of heritage sites in South Africa * National heritage sites of South Africa * Provincial heritage site (South Africa) * Heritage objects (South Africa) Associated legislation * National Heritage Resources Act, Act 25 of 1999 See also * National Monuments Council (South Africa and Namibia) * National heritage sites (South Africa) * Heritage objects (South Africa) * List of heritage sites in South Africa * Provincial heritage resources authority * Amafa aKwaZulu-Natali * Heritage Western Cape * Northern Cape Heritage Resources Authority The Northern Cape Heritage Res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ladysmith, KwaZulu-Natal
Ladysmith is a city in the Uthukela District of KwaZulu-Natal, South Africa. It lies north-west of Durban and south-east of Johannesburg. Important industries in the area include food processing, textiles, and tyre production. Ladysmith is the seat for both the Alfred Duma Local Municipality and Uthukela District Municipality. In 1900, the unincorporated town of Oyster Harbour (established c. 1898) on the east coast of Vancouver Island, British Columbia, Canada, was renamed Ladysmith by James Dunsmuir, in honour of the British lifting the siege of Ladysmith in South Africa (28 February 1900) during the Second Boer War. History In 1847, after buying land from the Zulu king Mpande, a number of Boers settled in the area and called it the Republic of Klip River with Andries Spies as their commandant. The republic was annexed by the British in the same year and on 20 June 1850 was proclaimed a township called Windsor. On 11 October 1850, the name was changed to Ladysmi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siege Of Ladysmith
The siege of Ladysmith was a protracted engagement in the Second Boer War, taking place between 2 November 1899 and 28 February 1900 at Ladysmith, Natal. Background As war with the Boer republics appeared likely in June 1899, the War Office in Britain dispatched a total of 15,000 troops to Natal, expecting that if war broke out they would be capable of defending the colony until reinforcements could be mobilized and sent to South Africa by steamship. Some of these troops were diverted while returning to Britain from India, others were sent from garrisons in the Mediterranean and elsewhere. Lieutenant General Sir George White was appointed to command this enlarged force. White was 64 years old and suffered from a leg injury incurred in a riding accident. Having served mainly in India, he had little previous experience in South Africa. Outbreak of war Contrary to the advice of several British officials such as Sir Alfred Milner, the High Commissioner for Southern Africa, the Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa-Ladysmith-RML 6
South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþaz'' ("south"), possibly related to the same Proto-Indo-European root that the word ''sun'' derived from. Some languages describe south in the same way, from the fact that it is the direction of the sun at noon (in the Northern Hemisphere), like Latin meridies 'noon, south' (from medius 'middle' + dies 'day', cf English meridional), while others describe south as the right-hand side of the rising sun, like Biblical Hebrew תֵּימָן teiman 'south' from יָמִין yamin 'right', Aramaic תַּימנַא taymna from יָמִין yamin 'right' and Syriac ܬܰܝܡܢܳܐ taymna from ܝܰܡܝܺܢܳܐ yamina (hence the name of Yemen, the land to the south/right of the Levant). Navigation By convention, the ''bottom or down-facing side'' of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fortification
A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ("to make"). From very early history to modern times, defensive walls have often been necessary for cities to survive in an ever-changing world of invasion and conquest. Some settlements in the Indus Valley civilization were the first small cities to be fortified. In ancient Greece, large stone walls had been built in Mycenaean Greece, such as the ancient site of Mycenae (famous for the huge stone blocks of its 'cyclopean' walls). A Greek '' phrourion'' was a fortified collection of buildings used as a military garrison, and is the equivalent of the Roman castellum or English fortress. These constructions mainly served the purpose of a watch tower, to guard certain roads, passes, and borders. Though smaller than a real fortress, they act ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrought-iron
Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to failure. Wrought iron is tough, malleable, ductile, corrosion resistant, and easily forge welded, but is more difficult to weld electrically. Before the development of effective methods of steelmaking and the availability of large quantities of steel, wrought iron was the most common form of malleable iron. It was given the name ''wrought'' because it was hammered, rolled, or otherwise worked while hot enough to expel molten slag. The modern functional equivalent of wrought iron is mild steel, also called low-carbon steel. Neither wrought iron nor mild steel contain enough carbon to be hardenable by heating and quenching. Wrought iron is highly refined, with a small amount of silicate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howitzer
A howitzer () is a long- ranged weapon, falling between a cannon (also known as an artillery gun in the United States), which fires shells at flat trajectories, and a mortar, which fires at high angles of ascent and descent. Howitzers, like other artillery equipment, are usually organized in a group called a battery. Howitzers, together with long-barreled guns, mortars, and rocket artillery, are the four basic types of modern artillery. Mortars fire at angles of elevation greater than 45°, and are useful for mountain warfare because the projectile could go over obstacles. Cannons fire at low angles of elevation (<45°), and the projectile lands much faster at its target than it would in the case of a mortar. But the cannon is not useful if there is an obstacle like a hill/wall in front of its target. Etymology The English word ''howitzer'' comes from the Czech word , from , 'crowd', and is in turn a borrowing from the Middle High German word or (mode ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Steel
Carbon steel is a steel with carbon content from about 0.05 up to 2.1 percent by weight. The definition of carbon steel from the American Iron and Steel Institute (AISI) states: * no minimum content is specified or required for chromium, cobalt, molybdenum, nickel, niobium, titanium, tungsten, vanadium, zirconium, or any other element to be added to obtain a desired alloying effect; * the specified minimum for copper does not exceed 0.40%; * or the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65%; silicon 0.60%; copper 0.60%. The term ''carbon steel'' may also be used in reference to steel which is not stainless steel; in this use carbon steel may include alloy steels. High carbon steel has many different uses such as milling machines, cutting tools (such as chisels) and high strength wires. These applications require a much finer microstructure, which improves the toughness. Carbon steel is a popular metal choic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
