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37 Mm Gun M1
The 37 mm gun M1 was an anti-aircraft autocannon developed in the United States. It was used by the US Army in World War II. The gun was produced in a towed variant, or mounted along with two M2 machine guns on the M2/ M3 half-track, resulting in the T28/T28E1/M15/M15A1 series of multiple gun motor carriages. In early World War II, each Army Anti-Aircraft Artillery (AAA) Auto-Weapons battalion was authorized a total of thirty-two 37 mm guns in its four firing batteries, plus other weapons. During World War II the 37 mm gun M1 was deployed in coast defense anti- motor torpedo boat batteries (AMTB) alongside 90 mm guns, usually four 90 mm and two 37 mm guns per battery. Some AMTB batteries consisted of four 37 mm guns, but most sources have little information on these batteries. In the later part of the war the 37 mm gun was typically replaced by the 40 mm Bofors gun M1.McGovern and Smith, p. 43 Components One or two gun units were coupled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solomon Islands
Solomon Islands, also known simply as the Solomons,John Prados, ''Islands of Destiny'', Dutton Caliber, 2012, p,20 and passim is an island country consisting of six major islands and over 1000 smaller islands in Melanesia, part of Oceania, to the northeast of Australia. It is directly adjacent to Autonomous Region of Bougainville, Bougainville, a part of Papua New Guinea to the west, Australia to the southwest, New Caledonia and Vanuatu to the southeast, Fiji, Wallis and Futuna, and Tuvalu to the east, and Nauru and the Federated States of Micronesia to the north. It has a total area of 28,896 square kilometres (11,157 sq mi), and a population of 734,887 according to the official estimates for mid-2023. Its capital and largest city, Honiara, is located on the largest island, Guadalcanal. The country takes its name from the wider area of the Solomon Islands (archipelago), Solomon Islands archipelago, which is a collection of Melanesian islands that also includes the Autonomous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Director (military)
A director, also called an auxiliary predictor, is a mechanical or electronic computer that continuously calculates trigonometric firing solutions for use against a moving target, and transmits targeting data to direct the weapon firing crew. Naval warships For warships of the 20th century, the director is part of the fire control system; it passes information to the computer that calculates range and elevation for the guns. Typically, positions on the ship measured range and bearing of the target; these instantaneous measurements are used to calculate rate of change values, and the computer ("fire control table" in Royal Navy terms) then predicts the correct firing solution, taking into account other parameters, such as wind direction, air temperature, and ballistic factors for the guns. The British Royal Navy widely deployed the Pollen and Dreyer Fire Control Tables during the First World War, while in World War II a widely used computer in the US Navy was the electro-mec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
37 Mm Artillery
37 may refer to: * 37 (number) * 37 BC * AD 37 * 1937 * 2037 Media * ''37'' (film), a 2016 film about the murder of Kitty Genovese * ''37'' (album) by King Never, 2013 * ''Thirty Seven'', a Karma to Burn song from the album ''Almost Heathen'', 2001 * ''37'', a DEVO song found on '' Hardcore Devo: Volume Two'' Science * Rubidium, an alkali metal in the periodic table * 37 Fides, an asteroid in the asteroid belt Other uses * 37 (MBTA bus), a bus route in Boston, Massachusetts, US * 37 (New Jersey bus), a NJ Transit bus route in New Jersey, US See also * 37th (other) 37th may refer to: *37th (Howitzer) Brigade Royal Field Artillery, a brigade of the Royal Field Artillery which served in the First World War * 37th (North Hampshire) Regiment of Foot, raised in Ireland in February 1702 * 37th (Northern Ontario) Ba ... * List of highways numbered 37 {{Numberdis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Popular Science
Popular science (also called pop-science or popsci) is an interpretation of science intended for a general audience. While science journalism focuses on recent scientific developments, popular science is more broad ranging. It may be written by professional science journalists or by scientists themselves. It is presented in many forms, including books, film and television documentaries, magazine articles, and web pages. History Before the modern specialization and professionalization of science, there was often little distinction between "science" and "popular science", and works intended to share scientific knowledge with a general reader existed as far back as Greek and Roman antiquity. Without these popular works, much of the scientific knowledge of the era might have been lost. For example, none of the original works of the Greek astronomer Eudoxus (4th century BC) have survived, but his contributions were largely preserved due to the didactic poem '' Phenomena'' writte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerrison Predictor
The Kerrison Predictor was one of the first fully automated anti-aircraft fire-control systems. It was used to automate the aiming of the British Army's Bofors 40 mm guns and provide accurate lead calculations through simple inputs on three main handwheels. The predictor could aim a gun at an aircraft based on simple inputs like the observed speed and the angle to the target. Such devices had been used on ships for gunnery control for some time, and versions such as the Vickers Predictor were available for larger anti-aircraft guns intended to be used against high-altitude bombers. Kerrison's analog computer was the first to be fast enough to be used in the demanding high-speed low-altitude role, which involved very short engagement times and high angular rates. The design was also adopted for use in the United States, where it was produced by Singer Corporation as the M5 Antiaircraft Director, later updated as the M5A1 and M5A2. The M6 was mechanically identical, differing on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of U
A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but lists are frequently written down on paper, or maintained electronically. Lists are "most frequently a tool", and "one does not ''read'' but only ''uses'' a list: one looks up the relevant information in it, but usually does not need to deal with it as a whole". Lucie Doležalová,The Potential and Limitations of Studying Lists, in Lucie Doležalová, ed., ''The Charm of a List: From the Sumerians to Computerised Data Processing'' (2009). Purpose It has been observed that, with a few exceptions, "the scholarship on lists remains fragmented". David Wallechinsky, a co-author of '' The Book of Lists'', described the attraction of lists as being "because we live in an era of overstimulation, especially in terms of information, and lists help ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QF 2-pounder Naval Gun
The 2-pounder gun, officially the QF 2-pounder ( QF denoting "quick firing") and universally known as the pom-pom, was a British autocannon, used as an anti-aircraft gun by the Royal Navy.British military of the period traditionally denoted smaller guns in terms of the approximate weight of the standard projectile, rather than by its bore diameter, which in this case was 40 mm. References to 40-mm anti-aircraft guns invariably mean the Bofors gun, while references to 2-pounder anti-aircraft guns mean this gun. The name came from the sound that the original models make when firing. This QF 2-pounder was not the same gun as the Ordnance QF 2-pounder, used by the British Army as an anti-tank gun and a tank gun, although they both fired , projectiles. Predecessors – Boer War and the Great War QF 1 pounder The first gun to be called a pom-pom was the 37 mm Nordenfelt-Maxim or "QF 1-pounder" introduced during the Second Boer War, the smallest artillery piece of that war. It fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
37 Mm Automatic Air Defense Gun M1939 (61-K)
The 37 mm automatic air defense gun M1939 (61-K) () is a Soviet Union, Soviet 37 mm calibre anti-aircraft gun developed during the late 1930s and used during World War II. The land-based version was replaced in Soviet service by the AZP S-60 during the 1950s. Guns of this type were successfully used throughout the Eastern Front (World War II), Eastern Front against dive bombers and other low- and medium-altitude targets. It also had some usefulness against lightly armoured ground targets. Development The Soviet Navy purchased a number of Bofors Bofors 25 mm M/32, 25 mm Model 1933 guns in 1935, trials of the weapon were successful, and it was decided to develop a 45 mm version of the weapon designated the 49-K. The development under the guidance of leading Soviet designers Loginov Mikhail Nikolaevich, M. N. Loginov, I. A. Lyamin and L. V. Lyuliev was successful, but the army thought that the 45 mm calibre was a little too large for an automatic field weapon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cannone-Mitragliera Da 37/54 (Breda)
The Cannone-Mitragliera da 37/54 (Breda) was a automatic anti-aircraft gun produced by the Breda company in Italy. It was used by both the Regia Marina and the Regio Esercito The Royal Italian Army () (RE) was the land force of the Kingdom of Italy, established with the proclamation of the Kingdom of Italy. During the 19th century Italy started to unify into one country, and in 1861 Manfredo Fanti signed a decree c ... during World War II, with the former using it as the standard light anti-aircraft weapon on its battleships and cruisers. Nazi Germany used captured weapons after the surrender of Italy in 1943 as the ''3.7 cm Breda (i)''. Design The Model 1932 was water-cooled while Models 1938 and 1939 were air-cooled. The gun was fed by a flat magazine holding six rounds which could be loaded one after another to maintain a high rate of fire. It was possible to select alternate rates of fire, either 60, 90 or 120 rpm. The twin mountings for Models 1932 and 1938 were very ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon De 37 Mm Modèle 1925
The Canon de 37 mm Modèle 1925 was a widely used family of French anti-aircraft guns used by the French Navy during World War II. Design and construction The Modèle 1925 was a single gun mount while the later Modèle 1933 was a twin mount. Both were hand-loaded, semi-automatic guns with a low rate of fire compared to their clip-fed contemporaries. A combination of low rate of fire, low projectile weight and small numbers of guns per ship led to a reputation of it being a poor anti-aircraft weapon. Ship classes that carried Modèle 1925 & Modèle 1933 include: * Aigle-class destroyers * Bougainville-class avisos * Bourrasque-class destroyers * Chacal-class destroyers *Dunkerque-class battleships * Duquesne-class cruisers * Guépard-class destroyers * L'Adroit-class destroyers * La Melpomène-class torpedo boats * Le Fantasque-class destroyers * Le Fier-class torpedo boats * Mogador-class destroyers * Richelieu-class battleships * Suffren-class cruisers * Vauquelin-class ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M4 Cannon
The 37 mm Automatic Gun, M4, known as the T9 during development, was a 37 mm (1.46 in) recoil-operated autocannon designed by John Browning, Browning Arms Company and entered service in 1942. The M4 and its variants would primarily be manufactured by Colt's Manufacturing Company and Oldsmobile (under-contract by Colt) and is therefore sometimes referred to as the "Colt M4" or "Oldsmobile M4." It was primarily mounted in the Bell P-39 Airacobra and Bell P-63 Kingcobra, P-63 Kingcobra, with the United States Navy, U.S. Navy also using it on many PT boats. Design Designed primarily as an anti-aircraft weapon, the gun had a muzzle velocity of and a cyclic rate of 150 rounds per minute. It was normally loaded with high-explosive shells, but could also be loaded with the M80 armor-piercing shell, which could penetrate 1 inch (25 mm) of Vehicle armour, armor plate at . It was magazine-fed and could be fired manually or by remote control through a solenoid mounted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PT Boat
A PT boat (short for patrol torpedo boat) was a motor torpedo boat used by the United States Navy in World War II. It was small, fast, and inexpensive to build, and it was valued for its maneuverability and speed. However, PT boats were hampered at the beginning of the war by ineffective torpedoes, limited armament, and comparatively fragile construction that limited some of the variants to coastal waters. In the US Navy they were organized in Motor Torpedo Boat Squadrons (MTBRONs). The PT boat was very different from the first generation of torpedo boats, which had been developed at the end of the 19th century and featured a displacement hull form. These first generation torpedo boats rode low in the water, displaced up to 300 tons, and had a top speed of . During World War I Italy, the US, and UK developed the first high-performance, gasoline-powered motor torpedo boats (often with top speeds over ) and corresponding torpedo tactics, but these projects were all quickly di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
