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Aim Point
{{Unreferenced, date=April 2007 In field artillery, the accuracy of indirect fire depends on the use of aiming points. In air force terminology the aiming point (or A.P.) refers to holding the intersection of the cross hairs on a bombsight when fixed at a specific target. An indirect fire aiming point provides a point of angular reference to aim a gun in the required horizontal direction – azimuth. Until the 1980s aiming points were essential for indirect fire artillery. They are also used by mortars and machine guns firing indirectly. An essential requirement of an aiming point is that it be at a sufficient distance from the gun using it. The reason for this is that, while firing, guns, particularly towed guns, move back a short distance – perhaps a foot, as their spades embed and may move more in soft ground. When they traverse their barrels their sights also move because they are not at the point of pivot. All this means that if the aiming point is too close then the ang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artillery
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indirect Fire
Indirect fire is aiming and firing a projectile without relying on a direct line of sight between the gun and its target, as in the case of direct fire. Aiming is performed by calculating azimuth and inclination, and may include correcting aim by observing the fall of shot and calculating new angles. Description There are two dimensions in aiming a weapon: * In the horizontal plane (azimuth); and * In the vertical plane (elevation), which is governed by the distance (range) to the target and the energy of the propelling charge. The projectile trajectory is affected by atmospheric conditions, the velocity of the projectile, the difference in altitude between the firer and the target, and other factors. Direct fire sights may include mechanisms to compensate for some of these. Handguns and rifles, machine guns, anti-tank guns, tank main guns, many types of unguided rockets (although missiles, mortars, howitzers, rocket artillery, multiple rocket launchers, and artillery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Force
An air force – in the broadest sense – is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army or navy. Typically, air forces are responsible for gaining control of the air, carrying out strategic and tactical bombing missions, and providing support to land and naval forces often in the form of aerial reconnaissance and close air support. The term air force may also refer to a tactical air force or numbered air force, which is an operational formation either within a national air force or comprising several air components from allied nations. Air forces typically consist of a combination of fighters, bombers, helicopters, transport planes and other aircraft. Many air forces may command and control other air defence forces assets such as anti-aircraft artillery, surface-to-air missiles, or anti-ballistic missile war ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombsight
A bombsight is a device used by military aircraft to drop bombs accurately. Bombsights, a feature of combat aircraft since World War I, were first found on purpose-designed bomber aircraft and then moved to fighter-bombers and modern tactical aircraft as those aircraft took up the brunt of the bombing role. A bombsight has to estimate the path the bomb will take after release from the aircraft. The two primary forces during its fall are gravity and air drag, which make the path of the bomb through the air roughly parabolic. There are additional factors such as changes in air density and wind that may be considered, but they are concerns only for bombs that spend a significant portion of a minute falling through the air. Those effects can be minimized by reducing the fall time by low-level bombing or by increasing the speed of the bombs. Those effects are combined in the dive bomber. However, low-level bombing also increases the danger to the bomber from ground-based defences, ... [...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 measure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traverse (gunnery)
Traverse may refer to: * Traverse (climbing), skiing, and in the engineering of roads into slopes * Traverse (surveying), a method of establishing basic points in the field * Movement of a machine slide on a machine tool * Traverse stage, a style of theatre seating or performance Other meanings: * TRAVERSE (software), accounting and business software * Traverse (gunnery), the horizontal field of fire of an artillery piece * Traverse (trench warfare), a development in trench design * Traverse (fortification), a mass of earth behind a military parapet * ''Traverse'' (magazine), a Northern Michigan regional monthly * Chevrolet Traverse, a 2009 sport-utility vehicle * Traverse County, Minnesota, a county in Minnesota * Traverse City, Michigan * Traverse, Michigan, an unincorporated community * Traverse Theatre, writing theatre in Scotland * Traverse Town, a fictional city in some Kingdom Hearts series video games * Traverse (common law), a pleading In law as practiced in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collimator Sight
A collimator sight is a type of optical sight that allows the user looking into it to see an illuminated aiming point aligned with the device the sight is attached to, regardless of eye position (with little parallax). They are also referred to as collimating sights or "occluded eye gunsight" (OEG). Description The basic layout of a collimator sight is a closed tube with a lens at its open end and a luminous reticle mounted near the closed end at the focus of the lens, creating an optical collimator. The reticle is illuminated by an electronic light source (an incandescent light bulb or, more recently, a light-emitting diode) or by ambient light gathered behind the reticle via an opalescent window or fiber optic light pipe. Collimator sights are a relatively old idea, being used in many forms for almost 100 years. Usage These sights are 'blind' sights; that is, they are used with both eyes open while one looks into the sight, with one eye open and moving the head to alternately ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M109 Paladin
The M109 is an American 155 mm turreted self-propelled howitzer, first introduced in the early 1960s to replace the M44. It has been upgraded a number of times, most recently to the M109A7. The M109 family is the most common Western indirect-fire support weapon of maneuver brigades of armored and mechanized infantry divisions. The M109 has a crew of four: the section chief/commander, the driver, the gunner, and the ammunition handler/loader. The chief or gunner aims the cannon left or right (deflection) and up and down (quadrant). The British Army replaced its M109s with the AS-90. Several European armed forces have or are currently replacing older M109s with the German PzH 2000. Upgrades to the M109 were introduced by the U.S. (see variants) and by Switzerland (KAWEST). With the cancellation of the U.S. Crusader and Non-Line-of-Sight Cannon, the M109A6 ("Paladin") will likely remain the principal self-propelled howitzer for the U.S. until the new M1299 enters service. Opera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AS90
The AS-90 ("Artillery System for the 1990s"), known officially as Gun Equipment 155 mm L131, is an armoured self-propelled artillery weapon used by the British Army. It can fire standard charges up to using 39 calibre long barrel (comparable to Russian 2S19 Msta) and with 52 cal. one. The max. rate of fire is 3 rounds in 10 seconds (burst), 6 per minute for 3 minutes (intense), and 2/min. for 60 minutes (sustained). History AS-90 was designed and built by the Armaments division of Vickers Shipbuilding and Engineering (VSEL). Between 1992 and 1995, VSEL supplied 179 vehicles at a cost of £300 million ( $480 million). The AS-90 was first deployed by the British Army in 1993. The AS-90s were acquired to re-equip six of the eight self-propelled field artillery regiments (each of 24 guns) in the I (BR) Corps, replacing the 105 mm FV433 Abbot SPG and older M109 155 mm Self Propelled Gun and FH70 towed howitzer. In 1999, VSEL became a part of BAE Systems. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panzerhaubitze 2000
The Panzerhaubitze 2000 ("tank howitzer 2000"), () abbreviated PzH 2000, is a German 155 mm self-propelled howitzer developed by Krauss-Maffei Wegmann (KMW) and Rheinmetall in the 1980s and 1990s for the German Army. It is capable of a very high rate of fire; in burst mode it can fire three rounds in nine seconds, ten rounds in 56 seconds, and can—depending on barrel heating—fire between 10 and 13 rounds per minute continuously. The PzH 2000 has automatic support for up to five rounds of Multiple Round Simultaneous Impact (MRSI). Replenishment of shells is automated. Two operators can load 60 shells and propelling charges in less than 12 minutes. The PzH 2000 equips the armies of Germany, Italy, Ukraine, Netherlands, Greece, Lithuania, Hungary, Qatar and Croatia, mostly replacing older systems such as the M109 howitzer. In November 2019, a PzH 2000 L52 gun fired a shell a distance of 67 km. Development In 1986, Italy, the United Kingdom and Germany agreed to termi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
L118 Light Gun
The L118 light gun is a 105 mm towed howitzer. It was originally designed and produced in England for the British Army in the 1970s. It has since been widely exported. The L119 and the United States Army's M119 are variants that use a different type of ammunition. History Development From 1961 to 1975, the British Army had the widely used 105 mm OTO Melara Mod 56, which it called the "L5 pack howitzer", with L10 ordnance as its light artillery weapon, replacing the 75 mm howitzer, 4.2 inch mortar and 25-pounder gun in eight regular artillery regiments. It fires the US M1 type ammunition (called "105 mm How" in the UK). The Mod 56 was originally designed in Italy for its mountain artillery units. It was light enough to be lifted by Westland Wessex helicopters or towed by Land Rovers. It could also be dismantled, with no piece heavier than 128 kg, to be transported by mules or horses. It lacked range (making it potentially vulnerable to counter-battery fire), wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
