What is Bristol Draco?

Information about Bristol Draco

The Bristol Draco was an air-cooled 9-Cylinder radial engine from the British manufacturer Bristol Aeroplane Company.

The Draco was tested with a fue;l injection system. The carburetor had only a simple butterfly valve, while two injection pumps supplied the cylinders with fuel: one handling four and one five cylinders - injection being into the manifold before they split into the two intake valves for each cylinder. The engine was flight tested in a Westland Wapiti. Since the expenditure did not bring considerable improvements the development was stopped.

technical data

Bore: 146 mm Stroke: 190.5 mm Capacity: 28.7 l Compression: 5.3:1 Propeller reduction: 0.5:1 Diameter: 1,410 mm Length: 1,105 mm Continuous duty: 540 hp

References

  • "British Piston aero Engines and their aircraft", Alec Lumsden, ISBN 1853102946
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Bristol / Bristol Siddeley aero-engines
Piston engines
Jupiter Mercury Draco Pegasus Phoenix Aquila Perseus Hydra Taurus Hercules Centaurus
Turbojet / Turbofan
Olympus Orpheus Pegasus BS100
Turboprop / Turboshaft
Theseus Proteus Orion Nimbus
Ramjet
Thor Odin
Rocket
Gamma Stentor
The radial engine is an internal combustion engine configuration in which the cylinders point outward from a central crankshaft like the spokes on a wheel. This configuration was very commonly used in aircraft engines before being superseded by turboshaft and turbojet
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The Bristol Aeroplane Company (formerly British and Colonial Aeroplane Company) was a major British aviation company. In 1956 its major operations were split into Bristol Aircraft and Bristol Aero Engines.
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Type general purpose
Manufacturer Westland
Designed by Arthur Davenport
Maiden flight March 1927
Introduced June 1928
Primary users Royal Air Force
IAF, RCAF, AAF
Number built 517
Variants
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The Bristol Aeroplane Company (formerly British and Colonial Aeroplane Company) was a major British aviation company. In 1956 its major operations were split into Bristol Aircraft and Bristol Aero Engines.
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Bristol Siddeley

Founded 1959
Headquarters Bristol, England

Industry aero-engine manufacture
Dissolved 1966
Bristol Siddeley was a British aero-engine manufacturer formed in 1959 from the merger of Bristol Aero Engines and Armstrong Siddeley Motors.
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The Bristol Jupiter was a British 9-cylinder one-row piston radial engine built by Bristol Aeroplane Company. Originally designed late in World War I, a lengthy series of upgrades and developments turned it into one of the finest engines of its era.
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Bristol Mercury was a 9-cylinder one-row piston radial engine used on British aircraft in the 1930s and 1940s.

History

The Mercury was developed by the Bristol Aeroplane Company in 1925 as their Bristol Jupiter was reaching the end of its lifespan.
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Bristol Pegasus is also a motor-racing club in Bristol, England.


The Bristol Pegasus was a British 9-cylinder one-row air-cooled radial engine used in the 1930s and 1940s aircraft.
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The Bristol Phoenix is also the name of the newspaper of Bristol, Rhode Island.

The Phoenix was a version of the Bristol Aeroplane Company's Pegasus engine, adapted to run on the Diesel cycle.
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The Aquila was a 9-cylinder one-row radial aircraft engine produced by the Bristol Engine Company starting in 1934. It saw little use, as its power range was already covered by existing designs. Its primary use was to supply mechanicals to a 14-cylinder version, the Taurus.
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The Perseus was a nine cylinder one-row radial aircraft engine produced by the Bristol Engine Company starting in 1932. It was not widely used due to the rapid introduction of much more powerful two-row engines like the Bristol Hercules, but is notable as being Bristol's
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The Hydra was an experimental 16-cylinder, twin row radial aircraft engine built by Bristol Aero Engines. It is a relatively rare example of a radial with and even number of cylinders – it is often claimed that radial engines require an odd number of cylinders, but this is
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The Taurus was a 14-cylinder two-row radial aircraft engine, produced by the Bristol Engine Company starting in 1936. The Taurus was developed by adding cylinders to the existing Aquila design, creating a design that produced just over 1,000 horsepower (750 kW) with very
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Bristol Hercules was a 14-cylinder two-row radial aircraft engine designed by Sir Roy Fedden and produced by the Bristol Engine Company starting in 1939. It was the first of their sleeve valve designs to see widespread use, powering many aircraft in the mid-World War II time frame.
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The Centaurus was the final development of Bristol Engine Company's series of sleeve valve radial aircraft engines, an 18-cylinder two-row design that eventually delivered over 3,000 hp (2.2 MW).
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The Olympus is a high-powered axial-flow turbojet, originally developed and produced by Bristol Aero Engines (hence the name from Greek mythology, a long time tradition of Bristol Aero Engines), later passed to Bristol Siddeley, and finally to Rolls-Royce.
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The Bristol-Siddeley Orpheus was a single spool turbojet developed by Bristol Aero Engines for various light fighter/trainer applications such as the Folland Gnat and the Fiat G91.
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Rolls Royce Pegasus is a turbofan engine originally designed by Bristol (hence the name from Greek mythology) and now manufactured by Rolls-Royce plc.

The unique Pegasus engine powers all versions of the Hawker Siddeley Harrier multi-role military aircraft.
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The Bristol Siddeley BS100 was a two-spool, vectored thrust, turbofan, similar in general arrangement to that of the Pegasus, but with the addition of Plenum Chamber Burning (PCB), to enable the P1154 VSTOL fighter to accelerate to supersonic speed.
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Theseus was the Bristol Aeroplane Company's first attempt at a gas-turbine engine design, a turboprop that delivered just over 2,000 hp (1,500 kW). A novel feature was the use of a heat exchanger to transfer waste heat from the exhaust to the compressor exit.
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The Proteus was the Bristol Aeroplane Company's first successful gas-turbine engine design, a turboprop that delivered just over 4,000 hp (3,000 kW). Proteus was a two spool, reverse flow gas turbine.
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The Bristol Orion aeroengine was a 2 shaft turboprop intended for later marks of the Bristol Britannia and Canadair CL-44. Although the engine was built and underwent a development program, around 1959 the project was cancelled by the British Ministry of Supply.
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The Bristol-Siddeley Nimbus was a turboshaft engine developed by Bristol Siddeley. It was used on the Westland Scout and Westland Wasp helicopters.

See also

  • List of aircraft engines


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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.
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The Bristol Aerojet Odin is a ramjet engine developed by Bristol Aero Engines. It is used to power the Sea Dart missile.


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