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Topic: Hispano 20 mm cannon

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	Armchair General Magazine: Interactive Military History
		Guns: Normally two Hispano 20 mm cannon (120 rounds per gun) and four Browning.303 machine guns (350 rounds per gun).
		Vc introduced the "universal" wing which enabled this variant to be fitted with various combinations of armament, including four 20 mm.
		Vc fighters had the B version armament with the outer cannon positions being covered, but the C wing carried 120 rounds for each cannon versus only 60 for each cannon on the B wing.
	www.armchairgeneral.com /articles.php?p=2109&page=1 (778 words)

	20 mm cannon aboard a B-17G???
		Field modification 20mm cannon installations on multi-engine aircraft was not uncommon (see attachment of a 20mm x 2 nose mount on a PBY-5A extracted from http://www.daveswarbirds.com/flcat/photo4.htm).
		http://www.ww2incolor.com/forum/showthread.php?p=85514 for a ground mount 20 mm AT cannon.
		20 MM Cannon in The tail, Spring, 1944.
	www.armyairforces.com /forum/m_109283/printable.htm (1294 words)

	Cannon - Free net encyclopedia (Site not responding. Last check: )
		Since World War II the term cannon is used to refer to a gun of around 20 mm to 125 mm calibre, sometimes with an automatic loading action capable of firing explosive ammunition, an auto-cannon.
		The Bofors 40 mm gun and Oerlikon 20 mm cannon are two examples largely used during the Second World War, and still in usage today.
		Typical of the type is the 25 mm 'Bushmaster' cannon mounted on the LAV and Bradley armoured vehicles.
	www.netipedia.com /index.php/Cannon (733 words)

	Hispano 20 mm cannon
		The Hispano Suiza 20 mm cannon was one of the most widely used aircraft weapons of the 20th century, used by British, American, French, and many other military services.
		The Hispano fired a 130 gram (4.59 oz) 20 mm x 110 mm projectile with a muzzle velocity between 840 and 880 m/s (2,755 and 2,888 ft/s), depending on barrel length.
		The U.S. Navy later replaced the M3 with the Colt Mk 12 cannon, while the British RAF and FAA went to the 30 mm ADEN cannon.
	www.xasa.com /wiki/en/wikipedia/h/hi/hispano_20_mm_cannon.html (326 words)

	Cannon
		In the West, the use of cannon was first recorded in the battles of the early 14th century, for instance, at the siege of Metz in 1324, and by the English against the Scots in 1327.
		Shotguns were developed as essentially small cannons, having been first named in Kentucky in the 18th Century; their size, expressed in gauge, is expressed in the fraction of a pound that a round shot of a diameter equal to their barrel bore diameter would be.
		Cannons in fortified positions, such as the Maginot Line and the Atlantic Wall, were increasingly unable to protect areas from infantry and tank attacks.
	www.ufaqs.com /wiki/en/ca/Cannon.htm (1626 words)

	Cannon - Archaepedia
		Although a variety of such guns are commonly referred to as "cannon", the term specifically refers to a gun designed to fire a 42 lb shot as opposed to a "Demi-cannon" (32 lb), Culverin (18 lb) or Demi-culverin (9 lb).
		Since World War II the term cannon is used to refer to a gun of around 20 mm to 125 mm calibre, sometimes with an automatic loading action capable of firing explosive ammunition, an auto-cannon.
		The Bofors 40 mm gun and Oerlikon 20 mm cannon are two examples largely used during the Second World War, and still in usage today.
	www.recceology.com /archie/index.php?title=Cannon (1916 words)

	Cannon - TvWiki, the free encyclopedia (Site not responding. Last check: )
		Image:Tir.jpg The oldest evidence for the use of cannon is a relief carved by Buddhist monks in China in 1128, where a cannon is portrayed among other weapons of war.
		However, it is undeniable that regardless of their (probably feeble) physical impact, early cannons, with their noise, smoke, and flames, had a terrifying psychological impact on horses or soldiers who had never encountered the weapons before.
		These cannons, combining explosive power with a flat trajectory, were adopted by various Navies from the 1840s, thereby triggering the demise of wooden ships, and the iron hull revolution in boat building.
	www.tvwiki.tv /wiki/Cannon (1727 words)

	Supermarine Spitfire - The Air Combat Wiki
		When fitted with only two cannons, the outboard guns were retained because of the tendancy of the wing to buckle under bomb loads at the inboard cannon ammo bay when only two cannons were installed in the inboard positions.
		XII used clipped "e" wings, with either 2x cannon in the internal gun bay (unlike normal "e" wing use with bomb racks) or augmented the cannons with 4x.303 machine guns.
		Camera installations were either two fanned vertical F.52s with 20 or 36 in lenses, two vertical F.8 cameras with 20 in lenses, or two vertical F.24s with 14 in lenses and a single port-facing oblique F.24 with an 8 or 14 in lens.
	wikipedia.ketsujin.com /index.php/Supermarine_Spitfire (8695 words)

	Cannon - Databank
		Although a variety of such guns are commonly referred to as "cannon", the term specifically refers to a gun designed to fire a 42 lb shot as opposed to a "Demi-cannon" (32 lb), Culverin (18 lb) or Demi-culverin (9 lb).
		Yet, a Korean cannon from the late 16th century had a range of 960m and an English cannon from the same time period had a range of 760m.
		Cannon fire is used annually on the Fourth of July by the Boston Pops during their annual concert on the shores of the Charles River and by the National Symphony Orchestra during their annual concert on the steps of the US Capitol Building.
	www.notd-aftermath.com /databank/index.php?title=Cannon (1596 words)

	CANNON OR MACHINE GUN
		Their 30 mm M-Geschoss HEI shells were highly effective, containing four times as much HE as the 20 mm version, and three or four hits with these could bring down a bomber, compared with 20 hits with 20 mm ammunition.
		The Hispano was significantly heavier and slower-firing until the British Mk V emerged near the war's end, matching the MG 151/20 in weight and rate of fire.
		The 20 mm cannon shells were not only two to three times heavier than HMG bullets, but their HEI contents greatly increased their effectiveness.
	www.quarry.nildram.co.uk /CannonMGs.htm (3242 words)

	Spitfire Vc by Ian Robertson (Tamiya 1/48)
		The additional cannon fairing was plugged and the inner machine gun on each wing was moved one rib toward the wing tip to give more room for the cannon ammunition.
		Because the cannons on the Mk.Vc were belt fed rather than drum fed, the blister on the lower surface of the wing was unnecessary and therefore deleted.
		New cannon blisters for the upper surface of the wings were scratch built using spare US WWII drop tanks that I cut longitudinally and then filed and sanded to the desired shape.
	www.hyperscale.com /features/2000/spitfirevcir_1.htm (832 words)

	Aircraft cannon data
		By the RN Sea Harriers during the Falklands war: Four in all, one Pucara, one A-4, one Hercules which had been damages by one Sidewinders and one A-4 which already was damaged by ground fire which was further damaged so it couldn't land, compared to eleven plus two damaged with Sidewinders.
		With TEABALL, the 555th TFW specialists, and the accompanying GCI support, it was possible for the USAF fighters who DID engage, to use their longer range weapons and negate the requirement to close to gun range.
		Text last updated 1995 Mar 15 by Urban Fredriksson, apart from the M61 section which was updated 1997 June 20, BK 27 update on 1997 Dec 11, Aden 30 and details 1997 Dec 16, Rafale 2005 Jan 24, links and aircraft list added 1998 Nov 04.
	www.canit.se /~griffon/aviation/text/akandata.htm (1498 words)

	Modifications and Attempts at Standardization
		The history of the acquisition and development of the American Hispano is dealt with at great length in the classic work, "The Machine Gun", written by George M. Chinn, a retired USMC Colonel, in the early 1950s.
		It soon became apparent that the Navy would be the largest user of the 20-mm cannon; in fact, records show that this branch of the service mounted over 90 percent of the cannon actually placed in American aircraft.
		One was that the 20-mm Hispano-Suiza automatic cannon could not be considered satisfactory as an aircraft weapon as long as it was necessary for the ordnanceman to coat the cartridge case with a heavy lubricant or wax.
	www.quarry.nildram.co.uk /US404.htm (3435 words)

	COMBATSIM.COM: The Planes of CFS3, Part. 1
		Beyond that the plane had four Hispano 20 mm cannon with 150 RPG in the nose and a quartet of.303 machine guns with 500 RPG.
		In the fuselage nose were four.50 calibers with 500 RPG and a 20 mm Hispano cannon with 150 rounds.
		Two 20 mms and two.50s were the planned armament but mock ups showed a better use of space in the slim nose with four.50s at 200 RPG.
	www.combatsim.com /memb123/htm/2002/09/cfs3p1 (3002 words)

	Hispano-Suiza HS.404 Information
		The Hispano-Suiza HS.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.
		The Hispano fired a 130 gram (4½ oz) 20 mm x 110 mm projectile with a muzzle velocity between 840 and 880 m/s (2,750 and 2,900 ft/s), depending on barrel length.
		The USAF introduced the 20 mm M39 revolver cannon to replace the M24, while the Navy instead stuck with the original design with a lighter round for better muzzle velocity in the Colt Mk 12 cannon.
	www.bookrags.com /wiki/Hispano-Suiza_HS.404 (706 words)

	Spitfire Vc by Ian Robertson (Tamiya 1/48) (Site not responding. Last check: )
		The additional cannon fairing was plugged and the inner machine gun on each wing was moved one rib toward the wing tip to give more room for the cannon ammunition.
		Because the cannons on the Mk.Vc were belt fed rather than drum fed, the blister on the lower surface of the wing was unnecessary and therefore deleted.
		New cannon blisters for the upper surface of the wings were scratch built using spare US WWII drop tanks that I cut longitudinally and then filed and sanded to the desired shape.
	www.kitparade.com /features00/spitfirevcir_1.htm (832 words)

	For Land Forces
		Since World War II the term cannon is used to refer to a gun of around 20 mm to 125 mm calibers, sometimes with an automatic loading action capable of firing explosive ammunition, an auto-cannon.
		Most nations use these modern (auto-) cannon on their lighter vehicles.
		Typical of the type is the 25 mm 'Bushmaster' cannon mounted on the LAV and Bradley armored vehicles.
	www.cannoninfo.com /Moderncannon/MODERNCANNON.htm (225 words)

	Mosquito Aircraft Production at Downsview
		The front half of the bomb bay was sacrificed in order to contain four British Hispano 20 mm.
		Hispano cannon were housed in the front half of the bomb bay.
		The machine guns had 500 rounds, and cannon 150 rounds per gun.
	www.virtualmuseum.ca /pm.php?id=story_line&lg=English&fl=&ex=00000192&sl=3205&pos=1 (555 words)

	De Havilland Mosquito - Great Britain
		Its armament comprised four 20 mm cannon in the front fuselage belly and four 0.303 in.
		More unusual weapons carried by some Mosquitos included a 57 mm cannon for ground attack (this devastating gun was capable of destroying any armored vehicle), and the 4,000 lb.
		The centimetric radar supplanted the four machine guns in the fuselage nose, reducing the armament to four 20 mm Hispano cannon.
	www.aviation-history.com /dehavilland/mosquito.html (1566 words)

	Swedish 20-38mm Guns
		20 mm Apjäs M/38 is an Italien clone fitted to Romulus and Remus
		20 mm Akan m/46A: similar cannon fitted to J 30
		37 mm Kanon m/38 stridsvagn, Kan m/38 strv
	www.mvs.chalmers.se /~m95perm_2/vapen/kanon/20.html (303 words)

	Aviation Art-Original Canadian Landscape Paintings-Limited Edition Giclée Prints-Catalog Shopping-Rich Thistle ...
		However, the aircraft had the strength to mount four 20 mm cannon, and later marks were armed this way.
		So it’s not surprising to hear that the pilots were much relieved when they could finally deliver their ordinance and look for targets of opportunity on their way back to base, or set out without bombs at all.
		No bombs, no pre-selected target; just stooging around in battle formation at 10,000 feet looking for something to hit with our (cannons)...we would split up into sections of four...and each of which would fly home separately once his 20 mm ammo was used up.”...
	www.richthistle.com /article_include.php?i=a21_looking_trouble.php (1231 words)

	RE: 20 mm cannon aboard a B-17G???
		Roman....Shooshoobaby (Mike) told you about cannon in the nose....on page 44 of Roger Freeman and David Osborne's The Flying Fortress Story...on the same page are two photos of the tail mounted 20mm cannon...
		If installed in the waste or radio compartment positions, the 20-mm cannons would be almost useless to defend the plane from attacks from directly behind, which is what they were hoping to accomplish with these bigger guns.
		In Freeman's book, there are also photos on the same page of an experimental 20-mm installation in the nose of a B-17, but it indicates it was was just an experiment in a loan 385th BG plane.
	www.armyairforces.com /forum/fb.asp?m=109283&go=last (3057 words)

	hurricane info (Site not responding. Last check: )
		The first prototype was flown on the 6th 1935 with a contract for 600 being placed only seven months later on 20 July 1936 with the first production examples being test flown on 12th October.
		During 1941 a four 20-mm Hispano cannon armed Hurricane Mk.IIc was introduced.
		During 1942, the Hurricane was superseded in the air-air role in the UK but continued to serve as a ground attack fighter with a dedicated anti-armour version, the Hurricane Mk.IID with two 40-mm cannon plus two.303 guns entering squadron service during 1942.
	www.airattack.co.uk /avengers/hurricane_info.htm (438 words)

	Southampton Hall of Aviation
		The prototype flew from Christchurch in November 1950 and was followed by over 800 production aircraft built at de Havilland's Christchurch, Hatfield and Chester factories and also by Fairey, Flight Refueling and Marshalls of Cambridge.
		In 1972 it was passed to Testwood Detached Flight of 424 (Southampton) Sqn ATC where it remained until 1986 when it was moved to the Squadron HQ and refurbished by members of the squadron, after a period on external display in Ocean Village it was installed in the Museum in 1993.
		Armament: Two or four 20 mm Hispano cannon, rockets and bombs.
	www.spitfireonline.co.uk /popup/exhibit5.html (232 words)

	Lockheed P-38 Lightning
		Although not all of these air- craft were armed, when they were, they were fitted with four.50 calibre (12.7 mm) machineguns instead of the two.50 calibre (12.7 mm) and two.30 calibre (7.62 mm) Brownings of their predecessors, but the 37 mm can- non was retained.
		The Model 222 was to be armed with four 12.7 mm and two 20 mm Brownings, and a P-38G was modified to test this armament fit.
		The XP-58 was to mount four 37 mm fixed forward-firing cannon and two remote-control barbettes, each with two 12.7 mm Brownings, mounted at the rear of the crew na- celle.
	www.aviationtrivia.homestead.com /P_38.html (9072 words)

	Toowoomba City Council Home - Historic Aircraft
		Armed with 4 x 20 mm Hispano Mk5 cannon, plus a mix of bomb and rockets.
		Fuel consumption 260 gph Imperial (572 lph) at take-off.
		Armed with two 20 mm Hispano cannon and four 0.303 in (7.7 mm) machine - guns, plus a 500 lb (226 kg) bomb.
	www.toowoomba.qld.gov.au /index.php?option=content&task=view&id=245&Itemid=251 (272 words)

	CFS1 Aircraft page 24
		Bell P-400 AIRACOBRA The RAF model was at first named Caribou, but the American name of Airacobra was adopted in July 1941.
		The British Airacobra was virtually identical to the American P-39D, but the 37-mm cannon was replaced with a Hispano 20-mm cannon with 60 rounds.
		After Pearl Harbor, the USA found itself in desperate need of aircraft to stem the Japanese onslaught in the Pacific.
	www.simviation.com /cfs1aircraft24.htm (599 words)

	Cannon information - Search.com
		A process where the cannonball is heated red hot and shot at flammable targets with the intent of starting a fire.
		In addition, cannons are used during the Australian Defence Force Academy's annual passing out parade in Canberra, Australia.
		The heavy metal band AC/DC also use cannons in their song For those about to rock, we salute you.
	domainhelp.search.com /reference/Cannon (1277 words)

	CANNON, MACHINE GUNS AND AMMUNITION
		An introduction to collecting 20 mm cannon cartridges NEW 6 MARCH 2007
		The Hispano-Suiza HS.404 20 mm Aircraft Gun in US Service AMENDED 4 MAY 2003
		The Cannon Pioneers: the Early Development and Use of Aircraft Cannon
	www.quarry.nildram.co.uk (260 words)

	WW2 Warbirds: the Dewoitine D.520 - Frans Bonné
		When these were changed to a metal 3-blade propeller, 1 central radiator and a Hispano Suiza 12Y-29 engine, the prototype reached its designed top level speed, and possessed a high diving speed.
		Two further prototypes followed, the D.520.02 and D.520.03, which differed in armament (a moteur-canon 20mm cannon firing through the propeller, and 4 x 0.295 inch/7,5 mm machineguns in the leading edge of the wings), and the.03 version had a Szydlowski supercharger in stead of the standard Hispano Suiza one.
		At the outbreak of the War only these three prototypes had flown, and too much emphasis on development and evaluation as well as a rigorous reorganisation of the French air industries delayed deliveries of much needed aircraft.
	www.xs4all.nl /~fbonne/warbirds/ww2htmls/dewod520.html (568 words)

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