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Utility transport helicopter family by Bell From Wikipedia, the free encyclopedia
The Bell 412 is a utility helicopter of the Huey family manufactured by Bell Helicopter. It is a development of the Bell 212, with the major difference being the composite four-blade main rotor. It is a twin-turbine helicopter that has been popular on the civilian and military markets, and major users include Canada, Italy, and Japan. Several hundred have been produced since its introduction in 1979, and several iterations of upgrades and variations have been produced, such as with upgraded cockpit electronics.
| Bell 412 | |
|---|---|
Police_Helicopter_039.jpg) Bell 412EP of the NSW Police Sydney | |
| General information | |
| Type | Multipurpose utility helicopter |
| National origin | United States/Canada |
| Manufacturer | Bell Helicopter |
| Primary users | Japan Ground Self Defence Force See Operators for others |
| Number built | 1,300+[1] |
| History | |
| Manufactured | 1979–present |
| Introduction date | 1981 |
| First flight | August 1979 |
| Developed from | Bell 212 |
| Variants | Bell CH-146 Griffon |
It has been manufactured under license in Italy as the Agusta-Bell AB412, in Indonesia by Indonesian Aerospace, and in Japan by Subaru. The Canadian Bell 412 was produced in Canada, but it was already the location of the main Bell Textron factory.
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Development began in the late 1970s, with two Bell 212s 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 deliveries commencing in the same month.[2] The 412 model was followed by the 412SP (Special Performance) version, which featured a larger fuel capacity, a higher takeoff weight, and optional seating arrangements. In 1991, the 412HP (High Performance) variant with improved transmission replaced the SP version in production.[2]
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In the early 2000s, Bell offered the Bell 412EP as its Bell 412 LUH entrant in the U.S. Army Light Utility Helicopter program, where it competed against several other light helicopters for an order.[3]
The current production version, 412EP (Enhanced Performance), is equipped with a dual digital automatic flight control system. In 2013, Bell introduced the 412EPI, which includes an electronic (digital) engine control for a PT6T-9 engine upgrade and a glass cockpit display system similar to the Bell model 429. Also featured is a Garmin touchscreen navigation system, and the BLR Strake and Fast Fin upgrades for improved hover performance.[4] Over 700 Model 412s (including 260 by AgustaWestland) have been built.[5][unreliable source?]
The helicopter is powered by the Pratt and Whitney Canada twin-pack power plant with two turboshaft engines and has achieved the lowest in-flight shut-down rate of aircraft turboshaft engines. If one engine is shut down, a single engine can produce emergency power for 30 minutes. [6]
The aircraft has been produced in Montreal, Canada, in Italy under license by Agusta, in Indonesia by Indonesian Aerospace, and also in Japan by Subaru (Fuji Heavy Industries).[7] The Bell 412 was also initially manufactured in Texas, USA.[8]
The emergency medical configuration can carry 6 patients/wounded and two attendants, or two stretchers and up to four attendants. [6]
By 2022, over 1300 Bell 412 helicopters had been delivered.[9]
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The Bell 412 is used by private and commercial operators. It is particularly popular in the oil industries, military, and for law enforcement use.
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Data from International Directory of Civil Aircraft,[71] Bell 412EP Product Specifications[72]
General characteristics
Performance
Related development
Related lists
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