Bristol Thor

The Bristol 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, BAE put considerable effort into developing the Thor unit, including the construction of a high altitude test plant (HATP), with a supersonic test cell, at their 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.

Bristol / Bristol Siddeley aero engines
Bristol Aeroplane Company
Piston engines (1920-1956)
Horizontally opposed engines:
  • Cherub
Radial engines:
  • Draco
  • Hydra
  • Jupiter
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Sleeve valve radial engines:
  • Aquila
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  • Orion
  • Perseus
  • Taurus
Bristol Siddeley gas turbine
and rocket engines (1959-1966)
Turbojets / Turbofans:
  • Gyron Junior
  • Olympus
  • Orpheus
  • Pegasus
  • BS.100
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Turboprops / Turboshafts:
  • BS.360
  • Coupled Proteus
  • Nimbus
  • Orion
  • Proteus
  • Theseus
Ramjets:
  • Thor
  • Odin
Rocket engines:
  • BS.605
  • Gamma
  • Stentor
Designers
  • Roy Fedden
  • Stanley Hooker
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    Henry David Thoreau (1817–1862)