Avro Vulcan B.Mk2

In 1955, the Vulcan B.Mk2 was proposed and a new wing modification was designed to take advantage of the more powerful Olympus engines and a new stand-off missile known as Blue Steel. Avro were given a contract for an aerodynamic prototype on 10 July 1956, with the first prototype VX777 making its first flight with the new wing on 31 August 1957.