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The Bristol Thor, latterly Bristol Siddeley BS.1009 Thor, was a 16-inch (41 cm) diameter ramjet engine developed by Bristol Aero Engines (later Bristol Siddeley Engines) for the Bristol Bloodhound anti-aircraft missile.

Thor
Bristol Thor modified for display purposes
Type	Ramjet
National origin	United Kingdom
Manufacturer	Bristol Aero Engines
First run	1950
Major applications	Bristol Bloodhound

Although Bristol Aero Engines acquired ramjet technology from the US company Marquardt, BAE put considerable effort into developing the Thor unit,[1] 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.[2]

Variants

BT.1 Thor

BT.2 Thor

BT.4 Thor

BS.1009 Thor

Specifications (BT.2 Thor)

Data from [3]

General characteristics

• Type: Ramjet
• Length: 103.9 in (2,639 mm)
• Diameter: 15.75 in (400 mm)
• Dry weight:

Components

• Compressor:

Performance

• Maximum thrust: (BT.1) - 5,275 lbf (23 kN) at M2.0 at sea level[4]
• Specific fuel consumption: 2.5 lb/(lbf h) (254.84 kg/(kN h)) at full thrust at sea level
• Power-to-weight ratio:

Notes

References

Wikimedia Commons has media related to Bristol Thor.

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