Rheinmetall Air Defence. Rheinmetall Air Defence AG is a division of German armament manufacturer Rheinmetall, created when the company's Oerlikon Contraves unit was renamed on 1 January 2009 and integrated with Rheinmetall's other air-defence products. Oerlikon Contraves was a Swiss anti-aircraft artillery manufacturer famous for its adaptation of the 1916 20 mm Becker as the Oerlikon 20 mm autocannon design, which was used in the Second World War and remains in use. Copies and derivatives of these designs were made by German, French, British, and Japanese weapon manufacturers. Oerlikon Contraves was purchased by Rheinmetall in 1999.
  
, Rheinmetall Air Defence had around 1,050 employees at locations in Switzerland, Germany, Italy, and Canada. The group's sales  were about .

History
Oerlikon's earliest predecessor was Schweizerische Werkzeugmaschinenfabrik Oerlikon, founded in the Oerlikon district of Zürich, Switzerland in 1906.

In 1923 it acquired a factory in Germany. It entered the anti-aircraft defence field in 1924. In 1936, it founded a purely anti-aircraft development company called Contraves (contra aves is Latin for "against birds", better translated as "anti-flying-objects") In 1989, the Werkzeugmaschinenfabrik Oerlikon-Bührle and Contraves merged to form the Oerlikon-Contraves Group, later renamed Oerlikon Contraves Defence. Oerlikon Contraves was purchased by Rheinmetall, a German armament manufacturer, in 1999, and renamed Rheinmetall Air Defence AG on 1 January 2009.

Historic products

American versions of the Oerlikon 20 mm cannon, such as the Mk 4, Mk 10, and Mk 24, were used extensively from World War II to the Vietnam War. As anti-aircraft weapons used by the US Navy, they were frequently the last line of defence against kamikaze attacks. Most combat ships from aircraft carriers to PT boats were equipped with Oerlikon guns. During the Vietnam War they were widely employed by riverine forces as anti-personnel weapons. They remained in service until the 1970s, when they were replaced by the Mk 16 20 mm cannon.

Oerlikon also developed the following surface-to-air missiles: the RSA Missile, the RSD 58, and the Kriens RSC Missile.
Oerlikons 20mm cannon was frequently used on Naval Ships throughout the 1920s, 30s and 40s.

Products  
Rheinmetall Air Defence specializes in ground-based and naval air defence. Their products include search-and-tracking sensors, 35 mm air-defence guns, command-and-control posts, battle management and ship-based combat systems.

Medium calliber weapons 

 Oerlikon KAD cannon, calibre 20×139 mm

 Oerlikon KAE cannon, calibre 20×128 mm (modernised variant of KAA and KAB cannons) 
 Oerlikon KBA autocanon, calibre 25×137 mm
 Oerlikon KCA autocanon, calibre 30×173 mm
 Oerlikon KCE autocanon, calibre 30×173 mm
 Oerlikon KDE autocanon, calibre 35×228 mm (used on Mitsubishi Type 89 IFV)
 Oerlikon KDC autocanon, calibre 35×228 mm
 Oerlikon KDG autocanon, calibre 35×228 mm

Ground-based air defence  

 Radar systems
 Oerlikon Skyguard 3
 X-TAR3D (radar)

Ground Based Air Defence Unit: 
Oerlikon GDF, calibre 35×228 mm, twin cannon
MANTIS C-RAM, calibre 35×228 mm
Oerlikon Skyshield, calibre 35×228 mm
Oerlikon revolver gun Mk2
Oerlikon revolver gun Mk3
Oerlikon Skynex
SkyKnight C-RAM missile launcher unit
 Mobile Air Defence: 
 Oerlikon Skyranger:
 Oerlikon Skyranger 30
 Oerlikon Skyranger 35
 Oerlikon Skyranger Search Radar Control Node (SRCN)
 Oerlikon Skyranger Missile (Stinger oder äquivalent)
 Oerlikon Skyranger Missile (Cheetah)
 Air Defence Anti-Tank System
 Natter Counter-UAS-System
 High-energy laser C-RAM
Command systems
Oerlikon Skymaster
Oerlikon Skynex

Naval systems 
Naval Gun Systems:
Oerlikon Natter:
Oerlikon Natter 7.62, calibre 7.62×51 mm NATO
Oerlikon Natter 12.7, calibre 12.7×99 mm NATO
Oerlikon Searanger:
Oerlikon Searanger 20, calibre 20×128 mm
Oerlikon Searanger 25, calibre 25×137 mm
Oerlikon Seasnake:
Oerlikon Seasnake 20, calibre 20×128 mm
Oerlikon Seasnake 30, calibre 30×173 mm
Oerlikon Millennium Naval Gun, calibre 35×228 mm
Search and Acquisition Radar: 
Oerlikon X-TAR3D/M
Radar and Electro Optical Tracking Modules: 
Oerlikon TMX/EO NT 
Oerlikon TMX/EO Mk2
Oerlikon SeaVision
Oerlikon SeaStorm
Command and Control: 
Oerlikon Seaguard naval tracking system
Oerlikon Weapon Control Module

Weapon stations (vehicles) 

 Oerlikon Fieldranger 20

Other military products 

 Mosquito (missile) ATGM
 LLM01 laser light module for firearms

Civilian products 
Oerlikon Contraves subsidiary Oerlikon Transtec manufactured railcar and locomotive systems, including locomotive brakes, subway and electric train power conversion systems, and other subsidiary systems for mass-transit vehicles. , Rheinmetall's website no longer lists these products as part of the Air Defence group.

Corruption charges
Rheinmetall Air Defence (RAD) is one of six companies that were blacklisted by India's Ministry of Defence in March 2012 for their involvement in a bribery scandal. The companies are accused of bribing the Director General of Ordnance Factories Board (OFB), Sudipta Ghosh. RAD and the other firms have been barred from any dealings with the OFB and all other Indian defence companies, as well as being blacklisted from participating in any Indian defence contract, for a period of 10 years. RAD has claimed that the charges against it are without merit.

Rheinmetall Air Defence was implicated in a corruption case in India along with arms dealer Abhishek Verma and his wife Anca Verma lodged by anti-corruption agency of India, the CBI in 2012 for bribing defence officials for securing multi billion dollar weapons contracts of the Indian military establishment. RAD Chairman Bodo Garbe and General Manager Gerhard Hoy were issued summons of the Indian courts. Subsequently a red-corner notice was issued for their detention through Interpol. The case at present is under trial in Indian courts.

See also 

30mm DS30M Mark 2 Automated Small Calibre Gun
Typhoon Weapon Station

References

 Air Force Center "Fliegermuseum Dübendorf"
 Hugo Schneider: Armament and equipment of the Swiss Army since 1817: light and medium anti-aircraft air defence anti-aircraft missiles, Volume 12 of armament and equipment of the Swiss Army since 1817, Author Publisher Stocker-Schmidt, 1982

External links

 Rheinmetall-DeTec, parent company
 Official site

Firearm manufacturers of Switzerland
Rheinmetall
 

fi:Oerlikon