|
M621 Cannon
The M621 is a 20 mm automatic cannon of French design, developed by Nexter as on-board armament for armored vehicles, aircraft, helicopters and small coastal vessels of the French Navy. Variants THL 20 Turreted cannon for helicopters. POD NC 621 Cannon pod for helicopters and light aircraft. ARX 20 Remotely controlled weapon station with M621 and a 7.62×51mm machinegun. SH20 Door mounted cannon for helicopters. CP 20 Pintle-mounted cannon for vehicles and boats. 15A Cannon for naval ships. NARWHAL As remote-controlled naval gun on the Nexter Narwhal 20A. See also *GIAT 30 *20 mm modèle F2 gun The 20 mm modèle F2 gun is a naval defence weapon used by the French Navy. It was developed from the GIAT M693, itself derived from Hispano-Suiza HS.820. It fires the same 20×139 mm round. History The need for a newer 20 mm def ... References 20 mm artillery Aircraft guns Autocannon Artillery of France Nexter Systems {{Machinegun- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Cannon
An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large- caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles ( bullets) fired by a machine gun. Autocannons have a longer effective range and greater terminal performance than machine guns, due to the use of larger/heavier munitions (most often in the range of , but bigger calibers also exist), but are usually smaller than tank guns, howitzers, field guns or other artillery. When used on its own, the word "autocannon" typically indicates a non-rotary weapon with a single barrel. When multiple rotating barrels are involved, such a weapon is referred to as a "rotary autocannon" or occasionally "rotary cannon", for short (particularly on aircraft). Autocannons are heavy weapons that are unsuitable for use by infantry. Due to the heavy weight and recoil, they are typically installed on fixed moun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Navy
The French Navy (french: Marine nationale, lit=National Navy), informally , is the maritime arm of the French Armed Forces and one of the five military service branches of France. It is among the largest and most powerful naval forces in the world, ranking seventh in combined fleet tonnage and fifth in number of naval vessels. The French Navy is one of eight naval forces currently operating fixed-wing aircraft carriers,Along with the U.S., U.K., China, Russia, Italy, India and Spain with its flagship being the only nuclear-powered aircraft carrier outside the United States Navy, and one of two non-American vessels to use catapults to launch aircraft. Founded in the 17th century, the French Navy is one of the oldest navies still in continual service, with precursors dating back to the Middle Ages. It has taken part in key events in French history, including the Napoleonic Wars and both world wars, and played a critical role in establishing and securing the French colonial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autocannon
An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bullets) fired by a machine gun. Autocannons have a longer effective range and greater terminal performance than machine guns, due to the use of larger/heavier munitions (most often in the range of , but bigger calibers also exist), but are usually smaller than tank guns, howitzers, field guns or other artillery. When used on its own, the word "autocannon" typically indicates a non-rotary weapon with a single barrel. When multiple rotating barrels are involved, such a weapon is referred to as a "rotary autocannon" or occasionally "rotary cannon", for short (particularly on aircraft). Autocannons are heavy weapons that are unsuitable for use by infantry. Due to the heavy weight and recoil Recoil (often called knockback, kickback o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Guns
An aircraft is a vehicle that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. Common examples of aircraft include airplanes, helicopters, airships (including blimps), gliders, paramotors, and hot air balloons. The human activity that surrounds aircraft is called ''aviation''. The science of aviation, including designing and building aircraft, is called ''aeronautics.'' Crewed aircraft are flown by an onboard pilot, but unmanned aerial vehicles may be remotely controlled or self-controlled by onboard computers. Aircraft may be classified by different criteria, such as lift type, aircraft propulsion, usage and others. History Flying model craft and stories of manned flight go back many centuries; however, the first manned ascent — and safe descent — in modern times took place by larger hot-air ball ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
20 Mm Modèle F2 Gun
The 20 mm modèle F2 gun is a naval defence weapon used by the French Navy. It was developed from the GIAT M693, itself derived from Hispano-Suiza HS.820. It fires the same 20×139 mm round. History The need for a newer 20 mm defence cannon than the Oerlikon 20 mm cannon began to grow noticeably during the 1980s. The companies DCN and GIAT Nexter Systems (formerly known as GIAT Industries or ''Groupement des Industries de l'Armée de Terre'', Army Industries Group) is a French government-owned weapons manufacturer, based in Roanne, Loire. Group organization The Nexter group is ... were contracted to design the F2 20 mm cannon, essentially a navalised version of the M693 gun used by the French Army, and sold for export. Description The 20 mm F2 is a mounted monotube gun, with two 150-cartridge boxes on each side of the piece. An electrical control system allows for a choice of three modes of fire: single shot, eight-shot burst, or free fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GIAT 30
The GIAT 30 is a series of 30 mm cannon developed to replace the DEFA 550 series weapons on French military aircraft. Introduced in the late 1980s, the GIAT 30 is a revolver cannon with electric ignition and automatic recocking. Unlike the DEFA cannon, the revolver chamber is electrically operated, rather than gas operated, improving both reliability and rate of fire. Two versions of the GIAT 30 are offered. GIAT 30M 781 Primarily intended for helicopter use and offered in several fixed, podded, and turreted installations. It is long with a total system weight of . It is designed to fire the ADEN/DEFA 30x113mm B rounds. The weight of the projectile varies from for HEI to for APHEI-SD. Typical muzzle velocity is with a rate of fire of 750 rounds per minute. Given its considerable recoil, it is typically used for single shots or controlled bursts rather than continuous fire. The 30 M781 is used on the Eurocopter Tiger and is also offered for naval use as part of the NARWHAL ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nexter Narwhal
The Nexter Narwhal is a type of remotely operated naval artillery turret made by the French company Nexter. It houses a 20 mm autocannon based on the Nexter M621 and M693. The name "Narwhal" is a backronym of "NAval Remote Weapon, Highly Accurate, Lightweight". It is designed to fit warships of all types ranging from patrol boats to frigates to aircraft carriers, notably as a close-quarters self-defence weapon. Design Nexter offers two versions of the Narwhal: * Narwhal 20A, based on the Nexter M621, firing 20×102mm ammunition;. * Narwhal 20B, based on the Nexter M693, firing 20×139mm ammunition. This is the version operated by the French Navy. The turret houses electro-optical cameras that offer daylight and nighttime vision, as well as a motion tracking system. It can rotate 360° in azimut, and from +75° to -20° in elevation. The gun is stabilised and can rotate quickly to attack targets at close range. Users France The French Navy uses the Narwhal on a num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Cannon
An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large- caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles ( bullets) fired by a machine gun. Autocannons have a longer effective range and greater terminal performance than machine guns, due to the use of larger/heavier munitions (most often in the range of , but bigger calibers also exist), but are usually smaller than tank guns, howitzers, field guns or other artillery. When used on its own, the word "autocannon" typically indicates a non-rotary weapon with a single barrel. When multiple rotating barrels are involved, such a weapon is referred to as a "rotary autocannon" or occasionally "rotary cannon", for short (particularly on aircraft). Autocannons are heavy weapons that are unsuitable for use by infantry. Due to the heavy weight and recoil, they are typically installed on fixed moun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nexter
Nexter Systems (formerly known as GIAT Industries or ''Groupement des Industries de l'Armée de Terre'', Army Industries Group) is a French government-owned weapons manufacturer, based in Roanne, Loire. Group organization The Nexter group is divided in several smaller entities, with the main one being Nexter Systems. The sub-companies are: * Nexter Munitions * Nexter Mechanics * Nexter Electronics * Nexter Robotics * Nexter Training * OptSys * NBC Sys * Euro-Shelter * Mecar * Simmel Difesa History The GIAT group was founded in 1973 by combining the industrial assets of the technical direction of Army weapons of the French Ministry of Defense. The company was nationalized in 1991. On 22 September 2006 GIAT became the core of the new company Nexter. For many years GIAT struggled to turn a profit. The company was operated at a loss. A 2001 report by the ''Cour des Comptes'' and a 2002 report by the National Assembly described the situation as critical. In April 2004 the boar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
20 Mm
20 mm caliber is a specific size of popular autocannon ammunition. It is typically used to distinguish smaller-caliber weapons, commonly called "guns", from larger-caliber "cannons" (e.g. machine gun vs. autocannon). All 20 mm cartridges have an outside projectile (bullet) diameter and barrel bore diameter of . These projectiles are typically long, cartridge cases are typically long, and most are shells, with an explosive payload and detonating fuze. Weapons using this caliber range from anti-materiel rifles and anti-tank rifles to aircraft autocannons and anti-aircraft guns. Usage Twenty-millimeter-caliber weapons are generally not used to target individual soldiers, but have targets such as vehicles, buildings, or aircraft. Types of ammunition *High explosive (HE) *High explosive incendiary (HEI) *Armor-piercing (AP) * Semi-armor-piercing high explosive incendiary (SAPHEI) *Armor-piercing discarding sabot (APDS) *High explosive fragmentation tracer (HEF-T) * High ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blowback (arms)
Blowback is a system of operation for self-loading firearms that obtains energy from the motion of the cartridge case as it is pushed to the rear by expanding gas created by the ignition of the propellant charge. Several blowback systems exist within this broad principle of operation, each distinguished by the methods used to control bolt movement. In most actions that use blowback operation, the breech is not locked mechanically at the time of firing: the inertia of the bolt and recoil , relative to the weight of the bullet, delay opening of the breech until the bullet has left the barrel. A few locked breech designs use a form of blowback (example: primer actuation) to perform the unlocking function. The blowback principle may be considered a simplified form of gas operation, since the cartridge case behaves like a piston driven by the powder gases. Other operating principles for self-loading firearms include delayed blowback, blow forward, gas operation, and recoil operatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
