Bell 214
The Bell 214 is a medium-lift helicopter derived from Bell Helicopter's ubiquitous UH-1 Huey series. The Bell 214ST shares the same model number, but is a larger, much-modified twin-engine derivative.
Design and development
The original development of the Model 214 was announced by Bell in 1970 under the name "Huey Plus". The first prototype was based on a Bell 205 airframe equipped with a Lycoming T53-L-702 engine of 1,900 shp.[1]
The first 214A demonstration prototype followed and was evaluated in Iran during field exercises with the Iranian Armed Forces. The trial was judged successful and an order for 287 214A helicopters followed. The intention was that these aircraft would be constructed by Bell in their Dallas-Fort Worth facility and that a further 50 214As and 350 Bell 214ST helicopters would then be built in Iran. In the event 296 214A models and 39 214C models were delivered, before the Iranian Revolution ended the plans for Iranian production.[2]
Similar in size and appearance to the Bell 205 and Bell 212, the Bell 214 uses a single, more powerful Lycoming LTC4B-8 engine (2,930 shp / 2,185 kW) and upgraded rotor system giving it a high lifting capacity and good performance at high temperatures and high altitudes.[3] It can be identified by the single large exhaust duct and wide chord rotor blades without stabilizer bars.
Bell offered the Bell 214B "BigLifter" for civil use.[3] It received certification in 1976. The 214B was produced until 1981. Powered by a 2,930 shp (2,183 kW) Lycoming T5508D turboshaft, it has the same rotor drive and transmission system as the 214A. The transmission is rated at 2,050 shp (1,528 kW) for take-off, with a maximum continuous power rating of 1,850 shp (1,379 kW). The BigLifter features advanced rotor hub with elastomeric bearings; an automatic flight control system with stability augmentation; and commercial avionics.[4]
Operational history
An estimated 50 Bell 214As and 25 Bell 214Cs were in Iranian service as of January 2010.[5] The overhaul facility set up at the time of delivery, the Iran Helicopter Support & Renewal Company, is now able to do major rebuilds and some manufacturing.
Approximately 41 Bell 214Bs are still flying in commercial service where the hook lifting capacity of 8,000 lb suits them for fire fighting, logging, and similar crane work. User countries are Australia (6)[6], Canada (10),[7] Korea (8), Norway (2), Singapore (3), and United States (15).[8]
Variants
- Bell 214 Huey Plus - The prototype 214 flew in 1970. Powered by one Lycoming T53-L-702 turboshaft (1,900 shp/1,415 kW).[3]
- Bell 214A/C Isfahan - The 299 Bell 214As for the Imperial Iranian Army Aviation were built beginning in 1972, followed by 39 Bell 214Cs with a hoist and other search and rescue equipment for the Imperial Iranian Air Force.[3]
- Bell 214B BigLifter - Civil version of the 214A.[3] 70 built.[9]
- Bell 214B-1 - This version of the Bell Model 214B is limited to a maximum 12,500 lb (5,670 kg) gross weight with an internal load due to different certification standards.[4][10] The external load is the same as the 214B. The only difference between the 214B and 214B-1 is the dataplate, and flight manual.[11]
Operators
Military operators
Specifications (214A)
Data from The International Directory of Civil Aircraft[13]
General characteristics
- Crew: 2
- Capacity: 3,880 lb including 14 troops, or 6 stretchers, or equivalent cargo
- Length: 48 ft 0 in (14.63 m))
- Rotor diameter: 50 ft 0 in (15.24 m)
- Height: 12 ft 10 in (3.90 m)
- Empty weight: 7,588 lb (3,442 kg)
- Loaded weight: 13,800 lb (6,260 kg)
- Max takeoff weight: 15,000 lb with slung load (6,805 kg)
- Powerplant: 1 × Lycoming LTC4B-8D turboshaft, 2,930 shp (2,185 kW)
Performance
See also
- Related development
- Aircraft of comparable role, configuration and era
References
- ^ Taylor, John W.R., Jane's All The World's Aircraft 1974-75, Jane's Yearbooks, 1974.
- ^ Apostolo, Giorgio. The Illustrated Encyclopedia of Helicopters, p. 54. Bonanza Books, New York, 1984. ISBN 0-517-439352.
- ^ a b c d e Frawley, Gerard. The International Directory of Military Aircraft, p. 34. Aerospace Publications Pty Ltd, 2002. ISBN 1-875671-55-2.
- ^ a b "Bell 214". Jane's Helicopter Markets and Systems. Jane's, 2007. (online subscription article)
- ^ a b c d e "World Military Aircraft Inventory". 2010 Aerospace Source Book. Aviation Week and Space Technology, January 2010.
- ^ McDermott Aviation (2007). "Helicopters, Our Fleet". http://www.mcdermottaviation.com.au/helicopters/our_fleet/. Retrieved 2009-11-21.
- ^ Transport Canada (October 2010). "Civil Aircraft Register". http://wwwapps2.tc.gc.ca/Saf-Sec-Sur/2/ccarcs/aspscripts/en/quicksearch.asp. Retrieved 10 October 2010.
- ^ Federal Aviation Administration (January 2010). "FAA REGISTRY - Make / Model Inquiry Results". http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=214B&PageNo=1. Retrieved 2010-01-07.
- ^ Pelletier, Alain J. Bell Aircraft Since 1935. US Naval Institute Press, 1992. ISBN 1557500568.
- ^ Donald, David, ed. "Bell Model 214". The Complete Encyclopedia of World Aircraft. Barnes & Nobel Books, 1997. ISBN 0-7607-0592-5.
- ^ Type Certificate Data Sheet, Note 10., "Except for a difference in maximum weight, the Model 214B and 214B-1 are identical to each other.
- ^ Cooper, Tom; Kuhn, Stefan (2003-09-09). "Arabian Peninsula & Persian Gulf Database: Oman (and Dhofar) 1952-1979". The Air Combat Information Group. http://www.acig.org/artman/publish/article_202.shtml.
- ^ Frawley, Gerard: The International Directory of Civil Aircraft, 2003-2004, page 44. Aerospace Publications Pty Ltd, 2003. ISBN 1-875671-58-7
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