Bell 212 Twin TwoTwelve
- CountryUnited States of America and Canada
- TypeMedium lift utility helicopter
- PowerplantsOne 1340kW (1800shp) (derated to 960kW/1290shp) Pratt & Whitney Canada PT6T3 or PT6T3B Turbo TwinPac, comprising two coupled PT6 turboshafts sharing a common gearbox with a single output shaft, driving a two blade main rotor and two blade tail rotor.
- PerformanceMax speed 240km/h (130kt), long range cruising speed 193km/h (104kt). Initial rate of climb 1320ft/min. Range with standard fuel at long range cruising speed 450km (243nm).
- WeightsEmpty VFR configuration 2765kg (6097lb), IFR configuration 2847kg (6277lb); max takeoff (with or without an external load) 5080kg (11,200lb).
- DimentionsMain rotor diameter 14.69m (48ft 2in), length overall 17.46m (57ft 3in), fuselage length 12.92m (42ft 5in), height 4.53m (14ft 10in). Main rotor disc area 168.1m2 (1809.6 sq ft).
- CapacityTotal seating for 15, including one or two pilots. Max weight on an external sling load 2270kg (5000lb).
- ProductionApproximately 900 212s, including military aircraft, had been delivered by 1998. Production totals augmented by AgustaBell examples, although these are mainly military versions. Bell production transferred to Canada in 1988.
The Model 212 is a twin engined improvement of Bell's prior and very fruitful Model 204 and 205 arrangement.
Ringer declared its choice to create the Model 212 in right on time May 1968 in extensive part because of a Canadian Armed Forces necessity for a twin engined improvement of the Cuh1h (Model 205) then entering military administration in that nation, and after fruitful arrangements with Pratt & Whitney Canada and the Canadian government. Advancement of the Model 212 was a joint wander between Bell, Pratt & Whitney Canada and the Canadian government, the recent giving monetary backing. The ensuing helicopter (assigned Cuh1n in Canadian and Uh1n in US military administration) first flew in 1969 and was conceded business certificate in October 1970. The primary Canadian Cuh1ns were given over in May 1971.
The most critical peculiarity of the Twin Twotwelve is the Pt6t Twin-Pac motor establishment. This comprises of two Pt6 turboshafts mounted side by side and driving a solitary yield shaft through a consolidating gearbox. The most clear profit of the new course of action is better execution because of the unit's expanded force yield. Notwithstanding, the Twin-Pac motor framework has a significant playing point in that ought to one motor fall flat, sensors in the gearbox train the staying working motor to create full power, in this manner giving a genuine motor out capacity, even at max takeoff weight.
Aside from the twin motors, the 212 peculiarities just minor subtle element changes over the prior Model 205 and Uh1h, including a somewhat reprofiled nose. The 212 is likewise offered with a decision of IFR or VFR flight suites. Generation was exchanged to Bell's Canadian processing plant in August 1988.
Pictures of Bell 212 Twin TwoTwelve
