In 1959 the Supersonic Transport Aircraft Committee recommended the construction of a fleet of long range intercontinental airliners which would fly almost twice as high and over twice as fast as those in service at that time; at Mach 2.0, twice the speed of sound. In 1962, the British and French Governments signed an agreement to develop the aircraft together. These wing shapes were used by W E Gray in the 24 foot wind tunnel at the Royal Aircraft Establishment, Farnborough, UK. They were used during the investigation of the Concorde wing shape with regard to side gust stability and 'Dutch Roll' phenomena.
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