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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 (winch) and other search and rescue equipment for the Imperial Iranian ...
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.
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.
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 ...
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It has a metal fuselage of semi-monocoque construction with tubular landing skids and two rotor blades on the main rotor. [23] Early UH-1 models featured a single Lycoming T53 turboshaft engine in versions with power ratings from 700 to 1,400 shp (522 to 1,040 kW). [7] Later UH-1 and related models often featured twin engines and four-blade ...
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 ...