What is the name of the wide-body twin-engine jet airliner that use the design of Richard Clarkson in its development?
Richard Clarkson: Richard Milroy Clarkson OBE FCGI FRAeS (14 July 1904 – 7 October 1996) was a British aeronautical engineer with de Havilland, then Hawker Siddeley. Richard Clarkson:  He designed the HS121 Trident, which was subsequently taken as template for the Airbus A300 in the late 1960s. Airbus A300: The Airbus A300 is a wide-body twin-engine jet airliner that was developed and manufactured by Airbus.
Airbus A300