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The Bell 214 is a medium-lift helicopter derived from Bell Helicopter's ... much-modified twin-engine derivative. Design and development ... Main rotor area: 1,963.75 ...
An interim twin-engine conversion of a Model 214 flew on 15 February 1977 in Texas, [4] [5] Testing was successful, and Bell decided to press forward with a definitive twin-engine Bell 214ST, with a fuselage stretched by 30 in (76 cm) and a revised main rotor of greater diameter.
The HueyTug, was a commercial version of the UH-1C with an upgraded transmission, longer main rotor, larger tailboom, strengthened fuselage, stability augmentation system, and a 2,650 shp (1,976 kW) Lycoming T-55-L-7 turboshaft engine. [12] Bell 212 15 seat twin-engined derivative of the Bell 205 Bell 214 Huey Plus Strengthened development of ...
Civil designation for the T55-L-7 military engine; dry weight of 580 lb (260 kg) [5] also powered the original Bell 214 helicopter as a 2,930 shp (2,180 kW) engine in 1970 [6] LTC4B-8D 2,950 shp (2,200 kW) engine powering the Bell 214 A helicopter; [ 7 ] uprated from the T55-L-7C; 433 engines produced between 1973 and 1977 for this military ...
Bell 412CF looking forward from the tail Bell 412 on approach. 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.
Bell 211 – The HueyTug, was a commercial version of the UH-1C with an upgraded transmission, longer main rotor, larger tailboom, strengthened fuselage, stability augmentation system, and a 2,650 shp (1,976 kW) T55-L-7 turboshaft engine. [8] Bell 212 – Bell Helicopter's company designation for the UH-1N. [citation needed] Bell 214 Huey Plus ...
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The more powerful Bell 222B was introduced in 1982 with a larger diameter main rotor. The 222B-based Bell 222UT Utility Twin, with skid landing gear, was introduced in 1983. [1] A development of the 222 is the Bell 230, with the 222's LTS 101 engines replaced by two Allison 250 turboshaft engines, plus other refinements. A converted 222 first ...