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The Westland Dragonfly HR.3 was a Royal Navy search and rescue helicopter produced under license from the Sikorsky S-51 design. It featured all-metal rotor blades and entered service in the 1950s as the Royal Navy's primary rescue helicopter. A total of 71 HR.3 models were manufactured, with some la...
The Westland WS-51 Dragonfly was a British helicopter produced by Westland Aircraft under license from Sikorsky, based on the Sikorsky S-51 design. It first flew on October 5, 1948, and became the first British-built helicopter to be used by the Royal Navy and the Royal Air Force. The Dragonfly was...
The Westland-Sikorsky WS-51 Mk.1A was a civil transport helicopter Dragonfly with a 520 hp Alvis Leonides engine; 36 were built.
The Westland Dragonfly HC.4 was a casualty-evacuation variant of the Westland Dragonfly helicopter operated by the Royal Air Force. It was related to the HR.3 but incorporated all-metal rotor blades and was configured for transport and medical evacuation duties. Twelve examples were built, making it...
The Westland Dragonfly HR.1 was a Royal Navy air-sea rescue version of the WS-51, powered by an Alvis radial engine; 13 were built.
The Westland-Sikorsky WS-51 Mk.1B was a civil Dragonfly powered by a Pratt & Whitney Wasp Junior radial engine; 15 were built.
The Westland Dragonfly HC.2 was an RAF casualty evacuation version of the WS-51, similar to the civil Mk.1A; three were built or converted.
The Westland Lynx is a British multi-role military helicopter first flown in 1971, notable for setting a world helicopter speed record of 400.87 km/h in 1986.
