The Bristol Aerojet Odin is a ramjet engine developed by Bristol Aero Engines. A ramjet, sometimes referred to as a stovepipe jet, or an athodyd, is a form of Jet engine that contains no major Moving parts. The Bristol Aeroplane Company, originally British and Colonial Aeroplane Company was a major British aviation company It is used to power the Sea Dart missile. Sea Dart or Guided Weapon System (GWS 30 is a British Surface-to-air missile system designed by Hawker Siddeley Dynamics and built by