Bristol Thor

The Bristol Thor, latterly Bristol Siddeley BS.1009 Thor, was a 16 in 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, BAE put considerable effort into developing the Thor unit, including the construction of a high altitude test plant (HATP) at their Patchway site, with a supersonic test cell.

The Bloodhound Mk.1 could attain a speed of Mach 2.2, while the Mk.2 was capable of just over Mach 2.7.

Variants

 * BT.1 Thor:
 * BT.2 Thor:
 * BT.4 Thor:
 * BS.1009 Thor: