Mauser BK-27
Encyclopedia
The BK 27 (German acronym for "Bordkanone", translation: on-board cannon) is a 27 mm (1.063 in) caliber
revolver cannon
manufactured by Mauser
(now part of Rheinmetall
) of Germany
. It was developed in the late 1960s for the MRCA (Multi-Role Combat Aircraft) program that ultimately became the Panavia Tornado
.
The BK 27 is a gas-operated cannon firing a new series of 27x145 mm projectiles with a typical weight of 260 g (9.2 oz). It uses a linked feed system, but a BK 27 Linkless, with a new linkless feed system intended to improve reliability, has been developed for the Eurofighter
.
, the Alpha Jet
, the JAS 39 Gripen
, and the Eurofighter Typhoon
. At one time the USAF hoped to license its production for the F-35
Lightning II joint strike fighter, but those plans have been cancelled in favour of the cheaper GAU-22/A.
Recently Rheinmetall
also developed modified, remote controlled naval versions, the MN 27 GS and the MLG 27 fully automatic naval guns, applied on many ships of the German Navy
. 99 MLGs 27 have been ordered by the German Navy so far. The cannon is a single-barrel, high performance, breech-cylinder gun operated by a fully automatic electrically fired gas-operated system at a selective rate of 1000 or 1700 rounds per minute.
Data from Jane's Information Group
Caliber
In guns including firearms, caliber or calibre is the approximate internal diameter of the barrel in relation to the diameter of the projectile used in it....
revolver cannon
Revolver cannon
A revolver cannon is a type of autocannon commonly used as an aircraft gun. It uses a cylinder with multiple chambers, like those of a revolver handgun, to speed up the loading-firing-ejection cycle. Some examples are also power-driven, to further speed the loading process, but this is by no means...
manufactured by Mauser
Mauser
Mauser was a German arms manufacturer of a line of bolt-action rifles and pistols from the 1870s to 1995. Mauser designs were built for the German armed forces...
(now part of Rheinmetall
Rheinmetall
Rheinmetall AG is a German automotive and defence company with factories in Düsseldorf, Kassel and Unterlüß. The company has a long tradition of making guns and artillery pieces...
) of Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
. It was developed in the late 1960s for the MRCA (Multi-Role Combat Aircraft) program that ultimately became the Panavia Tornado
Panavia Tornado
The Panavia Tornado is a family of twin-engine, variable-sweep wing combat aircraft, which was jointly developed and manufactured by the United Kingdom, West Germany and Italy...
.
The BK 27 is a gas-operated cannon firing a new series of 27x145 mm projectiles with a typical weight of 260 g (9.2 oz). It uses a linked feed system, but a BK 27 Linkless, with a new linkless feed system intended to improve reliability, has been developed for the Eurofighter
Eurofighter Typhoon
The Eurofighter Typhoon is a twin-engine, canard-delta wing, multirole combat aircraft, designed and built by a consortium of three companies: EADS, Alenia Aeronautica and BAE Systems; working through a holding company, Eurofighter GmbH, which was formed in 1986...
.
Design
The Mauser BK 27 is used in the Panavia TornadoPanavia Tornado
The Panavia Tornado is a family of twin-engine, variable-sweep wing combat aircraft, which was jointly developed and manufactured by the United Kingdom, West Germany and Italy...
, the Alpha Jet
Dassault-Breguet/Dornier Alpha Jet
The Dassault/Dornier Alpha Jet is a light attack jet and advanced trainer aircraft co-manufactured by Dornier of Germany and Dassault-Breguet of France.- Origins :...
, the JAS 39 Gripen
JAS 39 Gripen
The Saab JAS 39 Gripen is a lightweight single-engine multirole fighter manufactured by the Swedish aerospace company Saab. It was designed to replace the Saab 35 Draken and 37 Viggen in the Swedish Air Force...
, and the Eurofighter Typhoon
Eurofighter Typhoon
The Eurofighter Typhoon is a twin-engine, canard-delta wing, multirole combat aircraft, designed and built by a consortium of three companies: EADS, Alenia Aeronautica and BAE Systems; working through a holding company, Eurofighter GmbH, which was formed in 1986...
. At one time the USAF hoped to license its production for the F-35
F-35 Lightning II
The Lockheed Martin F-35 Lightning II is a family of single-seat, single-engine, fifth generation multirole fighters under development to perform ground attack, reconnaissance, and air defense missions with stealth capability...
Lightning II joint strike fighter, but those plans have been cancelled in favour of the cheaper GAU-22/A.
Recently Rheinmetall
Rheinmetall
Rheinmetall AG is a German automotive and defence company with factories in Düsseldorf, Kassel and Unterlüß. The company has a long tradition of making guns and artillery pieces...
also developed modified, remote controlled naval versions, the MN 27 GS and the MLG 27 fully automatic naval guns, applied on many ships of the German Navy
German Navy
The German Navy is the navy of Germany and is part of the unified Bundeswehr .The German Navy traces its roots back to the Imperial Fleet of the revolutionary era of 1848 – 52 and more directly to the Prussian Navy, which later evolved into the Northern German Federal Navy...
. 99 MLGs 27 have been ordered by the German Navy so far. The cannon is a single-barrel, high performance, breech-cylinder gun operated by a fully automatic electrically fired gas-operated system at a selective rate of 1000 or 1700 rounds per minute.
Users
- Austrian Air ForceAustrian Air ForceThe Austrian Air Force is a component part of the Austrian armed forces .-History:The Austrian Air Force was formed in May 1955 by the victorious Allied powers, subject to restrictions on its use of guided missiles...
- Bolivian Air ForceBolivian Air ForceThe Bolivian Air Force is part of the Military of Bolivia.-History:By 1938 the Bolivian air force consisted of about 60 aircraft , and about 300 staff; the officers were...
- Cameroon Air ForceCameroon Air ForceThe Cameroon Air Force is the air force of the African nation of Cameroon. The Cameroon Air Force, along with the Cameroon Army, the Cameroon Navy , the National Gendarmerie, and the Presidential Guard make up the Cameroonian Armed Forces.The Cameroon Air Force theoretically possesses a fairly...
- Top Aces Incorporated
- Czech Air ForceCzech Air ForceThe Czech Air Force is the air force branch of the Armed Forces of the Czech Republic. The Air Force, with the Land Forces, comprises the Joint Forces, the main combat power of the Armed Forces of the Czech Republic...
- German Air Force
- German NavyGerman NavyThe German Navy is the navy of Germany and is part of the unified Bundeswehr .The German Navy traces its roots back to the Imperial Fleet of the revolutionary era of 1848 – 52 and more directly to the Prussian Navy, which later evolved into the Northern German Federal Navy...
- Hungarian Air ForceHungarian Air ForceThe Hungarian Air Force is the air force branch of the Hungarian Army.- 1918 to Pre–World War II :Following the dissolution of the Austro-Hungarian Monarchy in 1918, a small air arm was established operating surviving aircraft from Hungarian factories and training schools...
- Italian Air ForceItalian Air ForceThe Italian Air Force has gone under different names in different periods:*Regia Aeronautica , from 1923 to June 1946*Aeronautica Nazionale Repubblicana, the air force of Italian Social Republic during World War II...
- Portuguese Air ForcePortuguese Air ForceThe Portuguese Air Force is the air force of Portugal. Formed on July 1, 1952, with the Aeronáutica Militar and Aviação Naval united in a single independent Air Force, it is one of the three branches of the Portuguese Armed Forces and its origins dates back to 1912, when the military aviation...
- South African Air ForceSouth African Air ForceThe South African Air Force is the air force of South Africa, with headquarters in Pretoria. It is the world's second oldest independent air force, and its motto is Per Aspera Ad Astra...
- Royal Saudi Air ForceRoyal Saudi Air ForceThe Royal Saudi Air Force , is the aviation branch of the Saudi Arabian armed forces. The RSAF has developed from a largely defensive military force into one with an advanced offensive capability...
- Swedish Air ForceSwedish Air ForceThe Swedish Air Force is the air force branch of the Swedish Armed Forces.-History:The Swedish Air Force was created on July 1, 1926 when the aircraft units of the Army and Navy were merged. Because of the escalating international tension during the 1930s the Air Force was reorganized and expanded...
- Spanish Air ForceSpanish Air Force-The early stages:Hot air balloons had been used with military purposes in Spain as far back as 1896. In 1905, with the help of Alfredo Kindelán, Leonardo Torres y Quevedo directed the construction of the first Spanish dirigible in the Army Military Aerostatics Service, created in 1896 and located...
- Royal Thai Air ForceRoyal Thai Air ForceThe Royal Thai Air Force or RTAF is the air force of the Kingdom of Thailand. Since its establishment in 1913, as one of the earliest air forces of Asia, the Royal Thai Air Force had engaged in many major and minor battles. During the Vietnam war era, the air force has been developed with USAF-aid...
- Royal Air ForceRoyal Air ForceThe Royal Air Force is the aerial warfare service branch of the British Armed Forces. Formed on 1 April 1918, it is the oldest independent air force in the world...
- QinetiqQinetiQQinetiq is a British global defence technology company, formed from the greater part of the former UK government agency, Defence Evaluation and Research Agency , when it was split up in June 2001...
Specifications
Jane's Information Group
Jane's Information Group is a publishing company specializing in transportation and military topics.-History:It was founded by Fred T...
- Type: single-barrel revolver cannonRevolver cannonA revolver cannon is a type of autocannon commonly used as an aircraft gun. It uses a cylinder with multiple chambers, like those of a revolver handgun, to speed up the loading-firing-ejection cycle. Some examples are also power-driven, to further speed the loading process, but this is by no means...
- Caliber: 27 mm x 145 (1.063 in)
- Operation: revolverRevolver cannonA revolver cannon is a type of autocannon commonly used as an aircraft gun. It uses a cylinder with multiple chambers, like those of a revolver handgun, to speed up the loading-firing-ejection cycle. Some examples are also power-driven, to further speed the loading process, but this is by no means...
- Length: 2.31 m (7 ft 7 in)
- Weight (complete): 100 kg (220 lb)
- Rate of fire: 1,700 rpm (+/- 100rpm)
- Muzzle velocity: 1,025 m/s (3,362 ft/s)
- Muzzle energy: ~136600 Joule
- Projectile weight: 260 g (9.2 oz)
See also
- ADEN cannonADEN cannonThe Royal Small Arms Factory ADEN is a 30 mm revolver cannon used on many military aircraft, particularly those of the British Royal Air Force and Fleet Air Arm...
- Comparable British design - DEFA cannonDEFA cannonThe DEFA cannon is a family of widely used French-made aircraft revolver cannons firing the standard 30 mm caliber NATO rounds.-Design history:...
- Comparable French design - M39 cannonM39 cannonThe M39 cannon was a 20 mm caliber single-barreled revolver cannon developed for the United States Air Force in the late 1940s. It was used on a number of fighter aircraft from the early 1950s through the 1980s.-Development:...
- Comparable US design