Gnome engines. Thus transformed, one might have assumed that the helicopter was underpowered, but the nature of turbine engines is such that- it was in fact ideal. Wessex.2 and 5 ) were powered by twin Rolls-Royce Gnome engines and employed as troop transports. Initially assembled with its Wright Cyclone, it was demonstrated to the British armed services leading to a preliminary order for the Royal Navy. Shaft drive to tail rotor through intermediate and tail gearboxes. 9 SAR-tasked Wessex helicopters were also stationed abroad, such as at Cyprus. G.Apostolo "The Illustrated Encyclopedia of Helicopters 1984 The company's success with the Whirlwind led to licence negotiations with Sikorsky to build the S-58, for Westland considered that this somewhat larger helicopter had excellent development potential with the introduction of turbine powerplant. All piston powered S-58s have now been retired from military service, although small numbers of twin Pratt Whitney Canada PT6T turboshaft S-58T conversions serve in Thailand and Indonesia. Sikorsky S-58 helicopter, Westland imported one of these aircraft. After acquiring a licence in 1956 to manufacture the.
HC.2, flown for the first time in production form on entering service with.38 Group in February 1964; the Navy's. The Squadrons of the Royal Air Force. 12 Operationally, the Wessex could lift less than the RAF's Bristol Belvedere helicopters, but was more robust and required less maintenance; thus, when the Belvedere was retired at the end of the 1960s, Wessex squadrons were often tasked with their former duties in support. 2, which differs significantly from the Royal Navys Wessexes in that it is powered by two Bristol SidJeley Gnome turboshafts joined through a combining gearbox. Other S-58 variants include the US Armys CH-34 Choctaw and the US Marine Corps UH-34 Seahorse. The type entered operational service in 1961, and had a service life in excess of 40 years before being retired in Britain. Bibliography edit Allen, Patrick. A b Halley 2001,.
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