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HS. 404
Type Aircraft Cannon
Place of origin Flag of France France
Service history
Wars World War II
Production history
Designer Marc Birkigt
Manufacturer Hispano-Suiza
Specifications
Weight 43 kg
Length 2. This article is about the country For a topic outline on this subject see List of basic France topics. Marc Birkigt (1878 - 1953 was a Swiss Engineer who moved to Spain where he became designer of Hispano-Suiza Automobiles He created History Early Years In 1898 a Spanish artillery captain Emilio de la Cuadra started with electric automobile production in Barcelona under 78 m
Barrel length 80 calibres
Cartridge 20×110mm
Caliber 20 mm
Rate of fire 700 rounds/min
Muzzle velocity 880 m/s
Feed system Drum magazine
Hispano Mk. For the fictional characters see Gunbarrel (Transformers. A gun barrel is the tube usually Metal, through which a controlled Explosion A cartridge (also known as a "round" packages the Bullet, Gunpowder and primer into a single metallic case precisely made to fit the The term caliber or calibre designates the interior Diameter of a tube or the exterior diameter of a wire or rod Rate of fire is the frequency at which a specific Weapon can fire or launch its projectiles A gun's muzzle velocity is the speed at which the Projectile leaves the muzzle of the gun V
Type Aircraft Cannon
Place of origin Flag of the United Kingdom United Kingdom
Service history
Used by United Kingdom, Commonwealth & United States
Wars World War II, Korean War
Specifications
Weight 42 kg
Cartridge 20×110mm
Calibre 20 mm
Rate of fire 750 rounds/min
Muzzle velocity 840 m/s
Feed system Belt

The Hispano-Suiza HS. The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located The United States of America —commonly referred to as the A cartridge (also known as a "round" packages the Bullet, Gunpowder and primer into a single metallic case precisely made to fit the The term caliber or calibre designates the interior Diameter of a tube or the exterior diameter of a wire or rod Rate of fire is the frequency at which a specific Weapon can fire or launch its projectiles A gun's muzzle velocity is the speed at which the Projectile leaves the muzzle of the gun History Early Years In 1898 a Spanish artillery captain Emilio de la Cuadra started with electric automobile production in Barcelona under 404 20 mm autocannon was one of the most widely used aircraft weapons of the 20th century, used by British, American, French, and many other military services. An autocannon is a rapid fire projectile Weapon. Autocannon often have a larger Caliber (calibre than a Machine gun (i The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located The United States of America —commonly referred to as the This article is about the country For a topic outline on this subject see List of basic France topics. Firing a 20 mm diameter projectile, it delivered a useful load of explosive from a relatively light weapon. This made it an ideal aircraft weapon, replacing the multiple 7. 62 mm (. 30 caliber) machine guns commonly used in military aircraft in the 1930s. For other uses of the phrase see Machine Gun (disambiguation.

Contents

Development

It was based on the earlier Swiss Oerlikon FF S weapons, which Hispano-Suiza manufactured under license in France as HS. Switzerland (English pronunciation; Schweiz Swiss German: Schwyz or Schwiiz Suisse Svizzera Svizra officially the Swiss Confederation The FF were a series of 20 mm Autocannon introduced by Oerlikon in the late 1920s 7 and HS. 9. In the late 1930s engineer Marc Birkigt designed a new and much improved version with a revised action, much faster rate of fire, and somewhat higher muzzle velocity. The 1930s were described as an abrupt shift to more radical and conservative lifestyles as countries were struggling to find a solution to the Great Depression. An engineer is a person professionally engaged in a field of Engineering. Marc Birkigt (1878 - 1953 was a Swiss Engineer who moved to Spain where he became designer of Hispano-Suiza Automobiles He created A gun's muzzle velocity is the speed at which the Projectile leaves the muzzle of the gun The result was the Type 404, or HS. 404, which was widely considered the best aircraft cannon of its kind. The 404 was widely used on pre-war French designs, notably in installations firing through the drive shaft of the Hispano-Suiza 12Y engine, a system known as a moteur-canon. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The HS. 404 was fed by drum magazines that could accommodate at most 60 rounds. Since in most installations the magazine could not be switched during flight, the small ammunition capacity was problematic. In 1940, Hispano-Suiza was developing a belt-feeding system, as well as derivatives of the HS. 404 in heavier calibres such as 23 mm, but all these projects were halted with the German occupation of France.

In the meantime, Great Britain had acquired a license to build the HS. 404, which was first used in a British fighter as the Hispano Mk. I with the Westland Whirlwind of 1940. This article describes the Second World War fighter aircraft For the postwar helicopter of the same name see Westland Whirlwind (helicopter. British engineers developed a belt-feeding mechanism. The new design was adopted by the RAF and FAA in 1941 in a slightly modified form as the Hispano Mk. The Fleet Air Arm is the branch of the Royal Navy responsible for the operation of the aircraft on board their ships II. Four cannons replaced the eight Browning .303 machine guns in the Hawker Hurricane and in tropical versions of the Supermarine Spitfire, and became standard armament in later fighters. The Browning M1919 is a.30 caliber Medium machine gun family widely used during the 20th century For other uses of the phrase see Machine Gun (disambiguation. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout Most other Spitfires had only two cannons, because of technical difficulties (i. e. , inadequate gun-heating capacity for the outboard cannon leading to the gun freezing at high altitiudes), along with four 0. 303 calibre or two 0. 50 calibre machine guns.

The gun was also licensed for use in the United States as the M1, with both the United States Army Air Corps (USAAC) and U.S. Navy planning to switch to the 20 mm as soon as sufficient production was ready. The United States Army Air Corps (USAAC was the predecessor of the U A massive building program was set up, along with production of ammunition, in 1941. Ammunition, often referred to as ammo, is a generic term derived from the French language la munition which When delivered the guns proved to be extremely unreliable and suffered a considerable number of misfires due to the round being "lightly struck" by the firing pin. The British were interested in using this weapon to ease production in England, but after receiving the M1 they were disappointed. In April 1942 a copy of the British Mk. II was sent to the U. S. for comparison, the British version used a slightly shorter chamber and did not have the same problems as the U. S. version of the cannon.

The U. S. declined to modify the chamber of their version, but nevertheless made other different modifications to create the no-more-reliable M2. By late 1942 the USAAC had 40 million rounds of ammunition stored, but the guns remained unsuitable. The U. S. Navy had been trying to go all-cannon throughout the war, but the conversion never occurred. As late as December 1945 the Army's Chief of Ordnance was still attempting to complete additional changes to the design to allow it to enter service. The United States Army is a military organization whose primary mission is to "provide necessary forces and capabilities.

Meanwhile, the British had given up on the U. S. versions and production levels had been ramped up to the point where this was no longer an issue anyway. They upgraded to the Hispano Mk. V, which had a shorter barrel, was lighter and had a higher rate of fire, although at the expense of some muzzle velocity. For the fictional characters see Gunbarrel (Transformers. A gun barrel is the tube usually Metal, through which a controlled Explosion One of the main British fighters to use the Mk. V was the Hawker Tempest Mk. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout V Series II, which mounted a total of four. The U. S. followed suit with the M3, but reliability problems continued. After World War II the United States Air Force (USAF) adopted a version of the M3 cannon as the M24, similar in most respects except for the use of electrically primed ammunition. World War II, or the Second World War, (often abbreviated WWII) was a global military conflict which involved a majority of the world's nations, including

The Hispano fired a 130 gram (4. 58 oz) 20 mm × 110 mm projectile with a muzzle velocity between 840 and 880 m/s (2,750 and 2,900 ft/s), depending on barrel length. A gun's muzzle velocity is the speed at which the Projectile leaves the muzzle of the gun Rate of fire was between 600 and 850 rounds per minute. It was 2. 36 m (7 ft 9 in) long, weighing between 42 and 50 kg (93 and 110 lb). The British Mk V and American M3/M24 weapons were lighter with higher rates of fire than the early HS. 404 guns.

In the post-war era the HS. 404 disappeared fairly quickly due to the introduction of revolver cannon based on the German Mauser MG 213. A revolver cannon is a type of Autocannon commonly used as an aircraft gun The Mauser MG 213 was a 20 mm aircraft-mounted Revolver cannon developed for the Luftwaffe during World War II. The British introduced the powerful 30 mm ADEN cannon in most post-war designs, and the French used the very similar DEFA cannon, both firing the same ammunition. The Royal Small Arms Factory ADEN is a 30 mm Cannon used on many Military aircraft, particularly those of the British Royal Air Force and The GIAT DEFA 550 is a series of widely used French aircraft guns The USAF introduced the 20 mm M39 revolver cannon to replace the M24, while the Navy instead combined the original Hispano design with a lighter round for better muzzle velocity in the Colt Mk 12 cannon. The Pontiac M39 was a 20 mm single-barreled Revolver cannon developed for the United States Air Force in the late 1940s. A revolver cannon is a type of Autocannon commonly used as an aircraft gun The Colt-Browning Mk 12 was a 20 mm Cannon widely used by the United States Navy after World War II.

Usage

France

HS. 404

United Kingdom & Commonwealth

Hispano Mk. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout I
Hispano Mk. II
Hispano Mk. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The Bristol Beaufighter is also the name of a Car produced by Bristol Cars in the 1980s WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout V

United States

M1
M2
M3
M24

Specifications

References

See also

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