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|<!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] -->
|<!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] -->
<!-- Please include units where appropriate (main comes first, alt in parentheses). If data are missing, leave the parameter blank (do not delete it). For additional lines, end your alt units with </li> and start a new, fully-formatted line with <li> -->
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|ref=''Lumsden''.<ref name= "Lumsden p.92"/>
|ref=British Piston Engines and their Aircraft<ref name= "Lumsden p.92"/>, Jane's All the World's Aircraft 1919<ref name=JAWA1919>Janes 1919, p.p.63b-65b</ref>
|type=14-cylinder air-cooled two-row [[radial engine]]
|type=14-cylinder air-cooled two-row [[radial engine]]
|bore=4.375 in (111 mm)
|bore={{cvt|4.375|in|0}}
|stroke=5.8 in (147.6 mm)
|stroke={{cvt|5.8|in|0}}
|displacement=1,223 cu in (20 L)
|displacement={{cvt|1223|cuin|l|1}}
|length=
|length=
|diameter=
|diameter={{cvt|41.625|in|0}}
|width=
|width=
|height=
|height=
|weight={{cvt|582|lb|0}} including synchronisation gear
|weight=
|valvetrain=2 valves per cylinder, [[poppet valve]]
|valvetrain=2 valves per cylinder, [[poppet valve]]
|supercharger=
|supercharger=
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|oilsystem=
|oilsystem=
|coolingsystem=Air-cooled
|coolingsystem=Air-cooled
|power=<br>
|power=347 hp (259 kW) at 2,000 rpm at sea level
:'''Maximum''' {{cvt|347|hp|0}} at 2,000 rpm at sea level
:'''Normal''' {{cvt|315|hp|0}} at 1,800 rpm at sea level
|specpower=
|specpower=
|compression=5.3:1
|compression=5.3:1
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|oilcon=
|oilcon=
|power/weight=
|power/weight=
| designer = [[Roy Fedden]]
| reduction_gear =
| general_other =
| components_other = 2x M.L. 7-cylinder magnetoes delivering sparks through a 14-cylinder Remy distributor with coil.
| performance_other =
}}
}}


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===Bibliography===
===Bibliography===
{{refbegin}}
{{refbegin}}
* Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989. {{ISBN|1-85260-163-9}}
* {{cite book |last1=Gunston |first1=Bill |title=World Encyclopaedia of Aero Engines |year=1989 |publisher=Patrick Stephens Limited |location=Cambridge, England |isbn=978-1-85260-163-8 |edition=2nd |page=44}}
* Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. {{ISBN|1-85310-294-6}}.
* {{cite book |last1=Lumsden |first1=Alec |title=British Piston Engines and their Aircraft |year=2003 |publisher=Airlife Publishing |location=Marlborough, Wiltshire |isbn=978-1-85310-294-3 |page=92 }}
* {{cite book |title=Jane's All the World's Aircraft 1919 |editor1-last=Grey |editor1-first=C.G. |edition=Facsimile |year=1969 |publisher=David & Charles Limited |location=London |isbn=07153-4647-4 |pages=63b-65b}}
* {{cite journal |date=July 3, 1919 |title=The Cosmos Aero Engines |journal=[[Flight (magazine)|Flight]] |volume=XI |issue=27 |id=No. 549 |pages=869–871}}
{{refend}}
{{refend}}


==External links==
==External links==
<!--Dead link[http://www.flightglobal.com/pdfarchive/view/1919/1919%20-%200871.html page 871].-->
*{{cite journal |date=July 3, 1919 |title=The Cosmos Aero Engines |format=PDF |journal=[[Flight (magazine)|Flight]] |volume=XI |issue=27 |id=No. 549 |pages=869–871 |url=http://www.flightglobal.com/pdfarchive/view/1919/1919%20-%200869.html |accessdate=January 12, 2011 }} Contemporary article on Cosmos Engineering's air-cooled radial engines. Photos of the Mercury are on page 869, and a short technical description is on [http://www.flightglobal.com/pdfarchive/view/1919/1919%20-%200871.html page 871].
*[http://www.flightglobal.com/pdfarchive/view/1919/1919%20-%200675.html ''Flight'' magazine, 22 May 1919 - Flightglobal.com]
<!--Dead link*[http://www.flightglobal.com/pdfarchive/view/1919/1919%20-%200675.html ''Flight'' magazine, 22 May 1919 - Flightglobal.com]-->
*[http://www.flightglobal.com/pdfarchive/view/1960/1960%20-%200208.html ''Flight'' magazine, 12 February 1960 - Flightglobal.com]
<!--Dead link*[http://www.flightglobal.com/pdfarchive/view/1960/1960%20-%200208.html ''Flight'' magazine, 12 February 1960 - Flightglobal.com]-->
*[https://web.archive.org/web/20110611232905/http://www.aviationarchive.org.uk/stories/pages.php?enum=GE122&pnum=13&maxp=15 Cosmos Mercury at Aviationarchive.org]
* {{cite web |title=World War I late ventures - Cosmos Mercury |url=http://www.aviationarchive.org.uk/stories/pages.php?enum=GE122&pnum=13&maxp=15 |website=Aviationarchive.org |access-date=20 December 2020 |archive-url=https://web.archive.org/web/20110611232905/http://www.aviationarchive.org.uk/stories/pages.php?enum=GE122&pnum=13&maxp=15 |archive-date=11 June 2011}}


{{Cosmos aeroengines}}
{{Cosmos aeroengines}}

Revision as of 10:04, 20 December 2020

Mercury
The Cosmos Mercury
Type Radial aero engine
Manufacturer Cosmos Engineering
Brazil Straker
Designer Roy Fedden
First run July Template:Avyear
Major applications Bristol Scout F
For the 1926 nine-cylinder radial engine see Bristol Mercury

The Cosmos Mercury was a fourteen-cylinder twin-row air-cooled radial aeroengine. Designed by Roy Fedden of Cosmos Engineering, it was built in the United Kingdom in 1917. It produced 347 horsepower (259 kW). It did not enter production; a large order was cancelled due to the Armistice.

Design and development

Built at Bristol by Brazil-Straker under the direction of Roy Fedden, the Mercury featured an unusual crankshaft and connecting rod arrangement that dispensed with the more normal design of a single master rod linking to individual rods for each cylinder. It was said to run well without vibration and set an unofficial time to climb record while fitted to a Bristol 21A Scout F.1, the aircraft achieving 10,000 ft (3,000 m) in 5.4 minutes and 20,000 ft (6,000 m) in 16.25 minutes.[1]

An Admiralty order for 200 engines was placed in 1917 but was later cancelled by Lord Weir due to the end of World War I, it is also stated that Lord Weir had a preference for the ABC Dragonfly.[2]

The name was re-used by Fedden for the later nine-cylinder Bristol Mercury radial engine.

Applications

Specifications (Mercury)

Data from British Piston Engines and their Aircraft[1], Jane's All the World's Aircraft 1919[3]

General characteristics

Components

  • Valvetrain: 2 valves per cylinder, poppet valve
  • Fuel type: Petrol
  • Cooling system: Air-cooled
  • 2x M.L. 7-cylinder magnetoes delivering sparks through a 14-cylinder Remy distributor with coil.

Performance

  • Power output:
Maximum 347 hp (259 kW) at 2,000 rpm at sea level
Normal 315 hp (235 kW) at 1,800 rpm at sea level

See also

Comparable engines

Related lists

References

Notes

  1. ^ a b Lumsden 2003, p.92.
  2. ^ Gunston 1989, p.44.
  3. ^ Janes 1919, p.p.63b-65b

Bibliography

  • Gunston, Bill (1989). World Encyclopaedia of Aero Engines (2nd ed.). Cambridge, England: Patrick Stephens Limited. p. 44. ISBN 978-1-85260-163-8.
  • Lumsden, Alec (2003). British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing. p. 92. ISBN 978-1-85310-294-3.
  • Grey, C.G., ed. (1969). Jane's All the World's Aircraft 1919 (Facsimile ed.). London: David & Charles Limited. pp. 63b – 65b. ISBN 07153-4647-4.
  • "The Cosmos Aero Engines". Flight. XI (27): 869–871. July 3, 1919. No. 549.
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