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Bell 412

By Wikipedia,
the free encyclopedia,

http://en.wikipedia.org/wiki/Bell_412

For an overview of the whole Huey family of aircraft see Bell Huey
Bell 412
Norwegian Bell 412SP helicopters taking part in the NATO exercise Strong Resolve 2002
Role Multipurpose utility helicopter
Manufacturer Bell Helicopter
Introduced 1981
Primary users Royal Air Force
Jamaica Defence Force
See Operators for others
Number built over 869
Developed from Bell 212
Variants CH-146 Griffon

The Bell 412 is a utility helicopter manufactured by Bell Helicopter. It is a further development of the Bell 212 model, the major difference being the composite four-blade main rotor.

Design and development

The development began in the late 1970s with two Bell 212 being converted into 412 prototypes. An advanced four blade main rotor with a smaller diameter replaced the 212's two blade rotor. A Bell 412 prototype first flew in August 1979. The initial model was certified in January 1981 with the deliveries commencing in the same month.

The 412 model was followed by the 412SP (Special Performance) version featuring larger fuel capacity, higher takeoff weight and more optional seating arrangement. In 1991, the 412HP (High Performance) variant with improved transmission replaced the SP version in production. The current production version, 412EP (Enhanced Performance), is equipped with a dual digital automatic flight control system.

Over 700 Model 412s (including 260 by AgustaWestland) have been built and in operation.

Variants


Bell 412 (VH-NSP) of Fire and Emergency Services Authority of Western Australia operated by CHC Helicopter
Bell 412 (VH-NSP) of Fire and Emergency Services Authority of Western Australia operated by CHC Helicopter

Polish Bell 412HP
Polish Bell 412HP

A Mercy Air Bell 412 at Victorville Airport
A Mercy Air Bell 412 at Victorville Airport

A Los Angeles Fire Department 412
A Los Angeles Fire Department 412

U.S. Department of Energy 412 at Mojave
U.S. Department of Energy 412 at Mojave

RAC Rescue 1, a Bell 412EP. Sponsored by RAC WA and operated by FESA
RAC Rescue 1, a Bell 412EP. Sponsored by RAC WA and operated by FESA

Bell Griffin HT1 of the Royal Air Force Defence Helicopter Flying School.
Bell Griffin HT1 of the Royal Air Force Defence Helicopter Flying School.
Bell 412 
Utility transport helicopter.
Bell 412EP 
Enhanced performance version.
Bell 412HP 
High performance version.
Bell 412SP 
Special performance version.
Military 412 
Armed military version.
CH-146 Griffon 
Utility transport helicopter for the Canadian Forces.
Bell Griffin HT1 
Advanced training helicopter based on the Bell 412EP, operated by the RAF since 1997 as an advanced flying trainer. Operated by the Defence Helicopter Flying School at RAF Shawbury and the Search and Rescue Training Unit at RAF Valley.
Bell Griffin HAR2 
Search and Rescue helicopter based on the Bell 412EP, operated by 84 Squadron RAF since 2003 at RAF Akrotiri in Cyprus.
Agusta-Bell AB 412 
Civil utility transport version, built under license in Italy by Agusta.
Agusta-Bell AB 412EP 
Italian-built version of the Bell 412EP.
Agusta-Bell AB 412 Grifone 
Military utility transport version, built under licence in Italy by Agusta.
Agusta-Bell AB 412 CRESO 
Italian-built version, fitted with a ground surveillance radar.
NBell 412 
IPTN's licensed product of Bell 412

Operators

Military operators

Civilian and government operators

Adelaide Bank Rescue Helicopter Service
Westpac Life Saver Rescue Helicopter Service
Fire and Emergency Services Authority of Western Australia
Lider Taxi Aereo, serving the Brazil offshore petroleum industry
Brazilian Federal Police
Government of Antioquia Department
Police of the Czech Republic
Finnish Border Guard has 5 AB 412s in service.
Oil and Natural Gas Corporation
GAIL
Global Vectra Helicorp
Atlantic Airways
Japan Coast Guard
Iranian helicopter service company (IHSC)
Slovenian Police
Department of Energy
United States Park Police
Delaware State Police
Los Angeles City Fire Department
Los Angeles County Fire Department
New York Police Department
Puerto Rico Police Department
Miami-Dade County Fire Department
Blackwater USA (private military and security company)
Chicago Fire Department

Incidents and accidents

Specifications (412EP)


Rotor head and transmission of a Bell 412.
Rotor head and transmission of a Bell 412.

Data from International Directory of Civil Aircraft Bell 412EP Product Specifications

General characteristics

  • Crew: 1-2 pilots
  • Capacity: up to 13 passengers, maximum external load of 4,500 lb (2,040 kg)
  • Length: 41 ft 9 in (12.7 m)
  • Rotor diameter: 46 ft (14 m)
  • Height: 15 ft (4.6 m)
  • Disc area: 1,662 ft² (154.4 m²)
  • Empty weight: 6,789 lb (3,079 kg)
  • Max takeoff weight: 11,900 lb (5,397 kg)
  • Powerplant:Pratt & Whitney Canada PT6T-3BE Twin-Pac turboshafts, 900 shp (671 kW) each

Performance

See also

Related development

Related lists

External links




Text from Wikipedia is available under the Creative Commons Attribution/Share-Alike License; additional terms may apply.


Published - July 2009














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