Bristol Thor



- Note: This is a Subsection of Bristol Aero-Engines
The Bristol Thor, latterly Bristol Siddeley BS.1009 Thor, was a 16" diameter ramjet engine developed by Bristol Aero Engines (later Bristol Siddeley Engines) for the Bristol Bloodhound anti-aircraft missile.
Although Bristol Aero Engines acquired ramjet technology from the US company Marquardt, the company also put considerable effort into developing the Thor unit, including the construction of a high altitude test plant, with a supersonic test cell, at their Bristol, Patchway site.
The Bloodhound Mk.1 could attain a speed of Mach 2.2, while the Mk.2 was capable of just over Mach 2.7.[1]