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Fire Correction Circle
In a military context, especially by the Finnish Non-Linear Artillery of the Continuation War, the Fire Correction Circle ( fi, korjausympyrä) or (Fire) Correction Converter Dial ( fi, korjausmuunnin) is a fully mechanical auxiliary device which was constructed of plywood and transparent plastic and which used to be used to calculate targeting values for non-linear artillery and mortars. By using a Correction Circle the artillery observer is able to report the necessary fire corrections to the unit firing without knowing exactly where the unit is firing from. This is achieved by having the artillery observer report targets' coordinates and azimuth (from his or her own position) to the firing units, then report corrections (both lateral and distance-) in meters after a salvo. Each firing unit would make their own calculations for correction based on their own position, target's position, artillery observer's azimuth as well as lateral- and distance corrections in meters provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Correction Circle
In a military context, especially by the Finnish Non-Linear Artillery of the Continuation War, the Fire Correction Circle ( fi, korjausympyrä) or (Fire) Correction Converter Dial ( fi, korjausmuunnin) is a fully mechanical auxiliary device which was constructed of plywood and transparent plastic and which used to be used to calculate targeting values for non-linear artillery and mortars. By using a Correction Circle the artillery observer is able to report the necessary fire corrections to the unit firing without knowing exactly where the unit is firing from. This is achieved by having the artillery observer report targets' coordinates and azimuth (from his or her own position) to the firing units, then report corrections (both lateral and distance-) in meters after a salvo. Each firing unit would make their own calculations for correction based on their own position, target's position, artillery observer's azimuth as well as lateral- and distance corrections in meters provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continuation War
The Continuation War, also known as the Second Soviet-Finnish War, was a conflict fought by Finland and Nazi Germany against the Soviet Union from 1941 to 1944, as part of World War II.; sv, fortsättningskriget; german: Fortsetzungskrieg. According to Finnish historian Olli Vehviläinen, the term 'Continuation War' was created at the start of the conflict by the Finnish government, to justify the invasion to the population as a continuation of the defensive Winter War and separate from the German war effort. He titled the chapter addressing the issue in his book as "Finland's War of Retaliation". Vehviläinen asserted that the reality of that claim changed when the Finnish forces crossed the 1939 frontier and started annexation operations. The US Library of Congress catalogue also lists the variants War of Retribution and War of Continuation (see authority control)., group="Note" In Soviet historiography, the war was called the Finnish Front of the Great Patriotic War.. Alter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plywood
Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured boards which include medium-density fibreboard (MDF), oriented strand board (OSB) and particle board (chipboard). All plywoods bind resin and wood fibre sheets (cellulose cells are long, strong and thin) to form a composite material. This alternation of the grain is called ''cross-graining'' and has several important benefits: it reduces the tendency of wood to split when nailed at the edges; it reduces expansion and shrinkage, providing improved dimensional stability; and it makes the strength of the panel consistent across all directions. There is usually an odd number of plies, so that the sheet is balanced—this reduces warping. Because plywood is bonded with grains running against one another and with an odd number of composite part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Targeting Value
Targeting may refer to: Biology * Gene targeting * Protein targeting Marketing * Behavioral targeting * Targeted advertising * Target market * Geotargeting, in internet marketing Other uses * Targeting (gridiron football), a penalty * Targeting (politics), to determine where to spend the resources of time, money, manpower and attention when campaigning for election * Targeting (video games), a controversial strategy in online gaming where a player continuously attacks the same opponent * Targeting (warfare), to select objects or installations to be attacked, taken, or destroyed * Targeting pod, in warfare * Targeting tower, a radio frequency antenna * Geographic targeting * Inflation targeting, in economics See also * Goal (other) * Target (other) Target may refer to: Physical items * Shooting target, used in marksmanship training and various shooting sports ** Bullseye (target), the goal one for which one aims in many of these sports ** Aimin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-linear Artillery
In mathematics and science, a nonlinear system is a system in which the change of the output is not proportional to the change of the input. Nonlinear problems are of interest to engineers, biologists, physicists, mathematicians, and many other scientists because most systems are inherently nonlinear in nature. Nonlinear dynamical systems, describing changes in variables over time, may appear chaotic, unpredictable, or counterintuitive, contrasting with much simpler linear systems. Typically, the behavior of a nonlinear system is described in mathematics by a nonlinear system of equations, which is a set of simultaneous equations in which the unknowns (or the unknown functions in the case of differential equations) appear as variables of a polynomial of degree higher than one or in the argument of a function which is not a polynomial of degree one. In other words, in a nonlinear system of equations, the equation(s) to be solved cannot be written as a linear combination of the un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortar (weapon)
A mortar is usually a simple, lightweight, man-portable, muzzle-loaded weapon, consisting of a smooth-bore (although some models use a rifled barrel) metal tube fixed to a base plate (to spread out the recoil) with a lightweight bipod mount and a sight. They launch explosive shells (technically called bombs) in high-arcing ballistic trajectories. Mortars are typically used as indirect fire weapons for close fire support with a variety of ammunition. History Mortars have been used for hundreds of years. The earliest mortars were used in Korea in a 1413 naval battle when Korean gunsmiths developed the ''wan'gu'' (gourd-shaped mortar) (완구, 碗口). The earliest version of the ''wan'gu'' dates back to 1407. Choi Hae-san (최해산, 崔海山) (1380–1443), the son of Choe Mu-seon (최무선, 崔茂宣) (1325–1395), is generally credited with inventing the ''wan'gu''. In the Ming dynasty, general Qi Jiguang recorded the use of a mini cannon called the Hu dun pao that was simi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artillery Observer
An artillery observer, artillery spotter or forward observer (FO) is responsible for directing artillery and mortar fire onto a target. It may be a ''forward air controller'' (FAC) for close air support (CAS) and spotter for naval gunfire support (NGSF). Also known as fire support specialist (FiSTer), an artillery observer usually accompanies a tank or infantry maneuver unit. Spotters ensure that indirect fire hits targets which the troops at the fire support base cannot see. Because artillery is an indirect fire weapon system, the guns are rarely in line-of-sight of their target, often located miles away. The observer serves as the eyes of the guns, by sending target locations and if necessary corrections to the fall of shot, usually by radio. More recently, a mission controller for an Army Unmanned Air System (UAS) may also perform this function, and some armies use special artillery patrols behind the enemy's forward elements. Special forces such as the British SAS, US SE ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azimuth
An azimuth (; from ar, اَلسُّمُوت, as-sumūt, the directions) is an angular measurement in a spherical coordinate system. More specifically, it is the horizontal angle from a cardinal direction, most commonly north. Mathematically, the relative position vector from an observer (origin) to a point of interest is projected perpendicularly onto a reference plane (the horizontal plane); the angle between the projected vector and a reference vector on the reference plane is called the azimuth. When used as a celestial coordinate, the azimuth is the horizontal direction of a star or other astronomical object in the sky. The star is the point of interest, the reference plane is the local area (e.g. a circular area with a 5 km radius at sea level) around an observer on Earth's surface, and the reference vector points to true north. The azimuth is the angle between the north vector and the star's vector on the horizontal plane. Azimuth is usually measured in d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Tali-Ihantala
A battle is an occurrence of combat in warfare between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and force commitment. An engagement with only limited commitment between the forces and without decisive results is sometimes called a skirmish. The word "battle" can also be used infrequently to refer to an entire operational campaign, although this usage greatly diverges from its conventional or customary meaning. Generally, the word "battle" is used for such campaigns if referring to a protracted combat encounter in which either one or both of the combatants had the same methods, resources, and strategic objectives throughout the encounter. Some prominent examples of this would be the Battle of the Atlantic, Battle of Britain, and Battle of Stalingrad, all in World War II. Wars and military campaigns are guided by military strategy, whereas bat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Equipment Of World War II
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct military uniform. It may consist of one or more military branches such as an army, navy, air force, space force, marines, or coast guard. The main task of the military is usually defined as defence of the state and its interests against external armed threats. In broad usage, the terms ''armed forces'' and ''military'' are often treated as synonymous, although in technical usage a distinction is sometimes made in which a country's armed forces may include both its military and other paramilitary forces. There are various forms of irregular military forces, not belonging to a recognized state; though they share many attributes with regular military forces, they are less often referred to as simply ''military''. A nation's military may f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
