Bristol Mercury engine

Mercury built by NOHAB

Bristol Mercury engine

The Bristol Mercury was a 9-cylinder one-row piston radial engine used on British aircraft in the 1930s and 1940s. Bristol Mercury engine at Bristol Industrial Museum, Bristol, England. ... Bristol Mercury engine at Bristol Industrial Museum, Bristol, England. ... Image File history File linksMetadata Size of this preview: 623 × 600 pixel Image in higher resolution (959 × 923 pixel, file size: 185 KB, MIME type: image/jpeg) This picture may have usage restriction Bristol (NOHAB) Mercury Source: own picture File links The following pages on the English Wikipedia link to... Image File history File linksMetadata Size of this preview: 623 × 600 pixel Image in higher resolution (959 × 923 pixel, file size: 185 KB, MIME type: image/jpeg) This picture may have usage restriction Bristol (NOHAB) Mercury Source: own picture File links The following pages on the English Wikipedia link to... Nohab diesel NOHAB, (Nydqvist & Holm AB), Swedish manufacturing company in the town of Trollhättan. ... Image File history File linksMetadata Size of this preview: 652 × 599 pixel Image in higher resolution (2064 × 1897 pixel, file size: 396 KB, MIME type: image/jpeg) This picture may have usage restriction Bristol Mercury Source: own picture File links The following pages on the English Wikipedia link to this... Image File history File linksMetadata Size of this preview: 652 × 599 pixel Image in higher resolution (2064 × 1897 pixel, file size: 396 KB, MIME type: image/jpeg) This picture may have usage restriction Bristol Mercury Source: own picture File links The following pages on the English Wikipedia link to this... 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. ...

History

The Mercury was developed by the Bristol Aeroplane Company in 1925 as their Bristol Jupiter was reaching the end of its lifespan. Although the Mercury initially failed to attract much interest, the Air Ministry eventually funded three prototypes and it became another winner for the designer Roy Fedden. Bristol Aeroplane Company logo The Bristol Aeroplane Company (formerly British and Colonial Aeroplane Company) was a major British aircraft company which, in 1959, merged with several major British aircraft companies, to become the British Aircraft Corporation and later still part of British Aerospace, now BAE Systems. ... This is a list of aviation-related events from Germany, in-flight (silent) movies shown in commercial airliners for the first time. ... Bristol Jupiter engine The Bristol Jupiter was a British 9-cylinder one-row piston radial engine used in the 1930s and 1940s aircraft. ... The Air Ministry was formerly a department of the United Kingdom Government, established in 1918 with the responsibility of managing the affairs of the (then newly formed) Royal Air Force. ... Sir Roy Fedden was an engineer who designed most of Bristol Engine Companys successful aircraft engine designs. ...

With the widespread introduction of superchargers to the aviation industry in order to improve altitude performance, Fedden felt it was reasonable to use a small amount of boost at all times in order to improve performance of an otherwise smaller engine. Instead of designing an entirely new block, the existing Jupiter parts were re-used with the stoke reduced by one inch (25 mm). The now-smaller capacity engine was then boosted back to Jupiter power levels, while running at higher rpm and thus requiring a reduction gear for the propeller. The same techniques were applied to the original Jupiter-sized engine to produce the Pegasus. A supercharger (also known as a blower) is an air compressor used to force more air (and hence more oxygen) into the combustion chamber(s) of an internal combustion engine than can be achieved at ambient atmospheric pressure. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Bristol Pegasus piston engine The Pegasus was a 9 cylinder one_row radial aircraft engine designed as the follow-on to the Bristol Aeroplane Companys very successful Bristol Jupiter, following lessons learned in the Mercury effort. ...

The Mercury's smaller size was aimed at fighter use, and it powered the Gloster Gauntlet and its successor, the Gloster Gladiator. It was intended that the larger Pegasus would be for bombers, but as the power ratings of both engines rose the Mercury found itself being used in almost all roles. Perhaps its most famous use was in a twin-engine light bomber, the Bristol Blenheim. Outside the United Kingdom, Mercury was licence-built in Poland and used in their PZL P.11 fighters. It was also built by NOHAB in Sweden and used in the Swedish Gloster Gladiator fighters and in the Saab 17 dive-bomber. This article or section does not adequately cite its references or sources. ... The Gloster Gauntlet was a single-seat, biplane fighter of the RAF. It was the last RAF fighter to have an open cockpit and the penultimate biplane. ... Gloster Gladiator photographed in England in 2002 The Gloster Gladiator was a biplane fighter, used by the Royal Air Force and the Royal Navy, as well as a number of other air forces, during World War II. The aircraft had a top speed of around 414 km/h. ... A bomber is a military aircraft designed to attack ground targets, primarily by dropping bombs. ... A light bomber is a military bomber aircraft which, when compared to other bombers, is relatively small and fast; such aircraft will probably not carry more than one ton of ordnance. ... The Bristol Type 142M Blenheim was a high-speed light bomber used extensively in the early days of World War II, built by Bristol Aeroplane Company. ... The PZL P.11 was a Polish fighter aircraft, designed in early-1930s by PZL in Warsaw. ... Nohab diesel NOHAB, (Nydqvist & Holm AB), Swedish manufacturing company in the town of Trollhättan. ... The Saab 17 was a Swedish bomber-reconnaisance aircraft. ...

Variants

• Mercury VIII - 730 hp (545 kW) at 2,650 rpm for takeoff, 840 hp (625 kW) at 2,750 rpm maximum continuous power
• Mercury XV - 840 hp (625 kW) at 2,750 rpm at 14,000 ft (4,270 m) maximum power with 87-octane fuel; 995 hp (740 kW) at 2,750 rpm at 9,250 ft (2,820 m) maximum power with 100-octane fuel
• Mercury XX - 870 hp (650 kW) at 2,650 rpm at 4,500 ft (1,370 m) maximum power

A gas station pump offering five different octane ratings. ...

Specifications (Mercury XV)

General characteristics

• Type: 9-cylinder supercharged air-cooled radial engine
• Bore: 5.75 in (146 mm)
• Stroke: 6.5 in (165 mm)
• Displacement: 1,520 in³ (24.9 L)
• Diameter: 51.5 in (1.307 m)
• Dry weight: 1,065 lb (485 kg)

Components

• Valvetrain: Four pushrod-actuated valves per cylinder, two inlet and two sodium-cooled exhaust valves
• Supercharger: High-speed centrifugal, single-stage single-speed
• Fuel system: Claudel-Hobson carburetor with automatic boost and mixture control
• Fuel type: 87- or 100-octane gasoline
• Oil system: Dry sump with one combination pressure/scavenge pump
• Cooling system:

Performance

• Power output:
  
  • 840 hp (625 kW) at 2,750 rpm at 14,000 ft (4,270 m) maximum power with 87-octane fuel
  • 995 hp (740 kW) at 2,750 rpm at 9,250 ft (2,820 m) maximum power with 100-octane fuel
• Specific power: 0.65 hp/in³ (29.7 kW/L) with 100-octane fuel
• Compression ratio: 7:1
• Specific fuel consumption: 1.0 lb/(hp·h) (0.61 kg/(kW·h))
• Power-to-weight ratio: 0.93 hp/lb (1.53 kW/kg)

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. ... A pushrod engine or overhead valve (OHV) engine is a type of piston engine that places the camshaft below the pistons (usually beside and slightly above the crankshaft in a straight engine or directly above the crankshaft in the V of a V engine) and uses pushrods or rods to... General Name, Symbol, Number sodium, Na, 11 Chemical series alkali metals Group, Period, Block 1, 3, s Appearance silvery white Atomic mass 22. ... A supercharger (also known as a blower) is an air compressor used to force more air (and hence more oxygen) into the combustion chamber(s) of an internal combustion engine than can be achieved at ambient atmospheric pressure. ... Bendix-Technico (Stromberg) 1-barrel downdraft carburetor model BXUV-3, with nomenclature The carburetor, carburettor, or carburetter (see spelling differences), also called carb (in North America) or carbie (chiefly in Australia) for short, is a device that blends air and fuel for an internal combustion engine. ... A gas station pump offering five different octane ratings. ... A dry sump is a lubricating oil management method for four-stroke and large two-stroke piston internal combustion engines that uses a secondary reservoir for oil, as compared to a conventional wet sump system. ... A gas station pump offering five different octane ratings. ... In engineering, specific power (sometimes also power per unit mass or power density) refers to the amount of power delivered by an energy source, divided by some measure of the sources size or mass. ... Bold text The compression ratio is a single number that can be used to predict the performance of any engine (such as an internal-combustion engine or a Stirling Engine). ... Specific fuel consumption, often shortened to SFC, is an engineering term that is used to describe the fuel efficiency of an engine design w/ a mechanical output. ... Power-to-weight ratio is a measure commonly used when comparing various vehicles (or engines), including automobiles, motorcycles and aircraft. ...

References

• Bridgman, L, (ed.) (1998) Jane's fighting aircraft of World War II. Crescent. ISBN 0-517-67964-7

See also

• Bristol Jupiter
• Bristol Pegasus

Bristol Jupiter engine The Bristol Jupiter was a British 9-cylinder one-row piston radial engine used in the 1930s and 1940s aircraft. ... Bristol Pegasus piston engine The Pegasus was a 9 cylinder one_row radial aircraft engine designed as the follow-on to the Bristol Aeroplane Companys very successful Bristol Jupiter, following lessons learned in the Mercury effort. ...

External links

• Recorded sound of the Bristol Mercury VI engine used in PZL P.11c (mp3 format)

The PZL P.11 was the Polish fighter aircraft, designed in early-1930s in the PZL factory in Warsaw. ...

See also

The Bristol Mercury was also a newspaper from Bristol, published in the 1800s. View from Cumberland Basin of the Clifton Suspension Bridge and the Avon Gorge Bristol (IPA: ) is a city, unitary authority and ceremonial county in South West England, 115 miles (185 km) west of London and between the cities of Bath, Gloucester and Newport. ...