The Bell 47 first flew in 1945 and was the type that cemented the usefulness of the helicopter on the battlefield during the Korean war where it was used heavily by UN forces to evacuate wounded soldiers. This role was also made famous by the wartime comedy MASH which featured the Bell 47 in its titles sequence. In British Army service the type was known as the Sioux and was licence built by Westland Aircraft in Yeovil. The example appearing at this year's Air Tattoo on static has been provided by the Historic Army Aircraft Flight.
Photo Credit: Andrew Evans