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{|{{Infobox Aircraft Begin
The Three ups ( also known as the voice) is a british R&B girl group whose final line-up comprised Veronica kiwele, Katie kiwele, Peyton blake, and finally Auralia shirazu. Formed in 2012 England, Norwich, three ups begin the music when they were 9 years old, after years of perfoming undergroud they got sign pualnivealSNYCO as three ups.
|name= A.74
|image = Image:Fiat A.74 RIC38.jpg
|caption = Preserved Fiat A.74 RIC38 engine
}}
{{Infobox Aircraft Engine
|type= [[Radial engine]]
|national origin =
|manufacturer= [[Fiat]]
|first run=
|major applications=
|number built =
|program cost =
|unit cost =
|developed from =
|developed into =
|variants with their own articles =
}}
|}

The '''Fiat A.74''' was a two-row, fourteen-cylinder, air-cooled radial engine produced in Italy in the 1930s as a powerplant for aircraft. It was used in some of Italy's most important aircraft of World War II.

==Design and development==
The A.74 was important in that it marked a transition for Fiat from liquid-cooled inline engines, to large air-cooled radial engines. Fiat had made a number of smaller radial air engines over the years but the A.74 marked a major increase in power and size. The A.74 family was widely produced and spawned a number of related engines such as the A.76, A.80 and A.82. Each successive generation being larger and more powerful than the previous. The entire series grew from 14 cylinders to 18 cylinders with a power output of 870 hp to 1,400 hp.

==Applications==
*[[CANSA FC.20]]
*[[Fiat CR.42]]
*[[Fiat G.50]]
*[[Fiat RS.14]]
*[[Macchi C.200]]

==Specifications (A.74)==
{{pistonspecs
|<!-- 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> -->
|type=14-cylinder air-cooled radial
|bore=140 mm (5.512 in)
|stroke=145 mm (5.709 in)
|displacement=31.25 litres (1,906.9 cu in)
|length=1,044mm (41.13 in)
|diameter=
|width=653mm (25.71 in)
|height=1,195 mm (47.05 in)
|weight=565 kg (1,246 lb)
|valvetrain=One intake and one sodium-cooled exhaust valve per cylinder
|supercharger=
|turbocharger=
|fuelsystem=1 [[Stromberg]] carburettor
|fueltype=87 octane
|oilsystem=
|coolingsystem=air-cooled
|power=870 [[Horsepower#CV_and_cv|cv]] (858 hp, 640 kW) at 2,520 rpm at sea level (take-off rating); 840 cv (828 hp, 618 kW) at 2400 rpm at 3,800 m <ref>[http://issuu.com/icar2011/docs/fiat_a.74_mr_parte_1 A.74 engine manual]</ref>
|specpower=
|compression=6.7:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=0.67 hp/lb
}}

==See also==
{{aircontent
<!-- other related articles that have not already linked: -->
|see also=

<!-- designs which were developed into or from this aircraft: -->
|related=

<!-- aircraft that are of similar role, era, and capability as this design: -->
|similar aircraft=

<!-- relevant lists that this aircraft appears in: -->
|lists=
*[[List of aircraft engines]]
<!-- For aircraft engine articles. Engines that are of similar to this design: -->
|similar engines=
* [[BMW 801]]
* [[Bristol Hercules]]
* [[Pratt & Whitney R-1830]]
* [[Wright R-2600]]
* [[Gnome-Rhône 14N]]
* [[Mitsubishi Kinsei]]
* [[Nakajima Sakae]]
* [[Shvetsov ASh-82]]

<!-- See [[WP:Air/PC]] for more explanation of these fields. -->
}}

==References==
{{commonscat}}
* [http://www.oldengine.org/members/diesel/Duxford/data01.htm oldengine.org]
<references />

{{Fiat aeroengines}}
{{Aviation lists}}

[[Category:Radial engines]]
[[Category:Fiat aircraft engines]]
[[Category:Aircraft piston engines 1930–1939]]

[[it:Fiat A.74]]

Revision as of 23:02, 2 June 2012

A.74
Preserved Fiat A.74 RIC38 engine
Type Radial engine
Manufacturer Fiat

The Fiat A.74 was a two-row, fourteen-cylinder, air-cooled radial engine produced in Italy in the 1930s as a powerplant for aircraft. It was used in some of Italy's most important aircraft of World War II.

Design and development

The A.74 was important in that it marked a transition for Fiat from liquid-cooled inline engines, to large air-cooled radial engines. Fiat had made a number of smaller radial air engines over the years but the A.74 marked a major increase in power and size. The A.74 family was widely produced and spawned a number of related engines such as the A.76, A.80 and A.82. Each successive generation being larger and more powerful than the previous. The entire series grew from 14 cylinders to 18 cylinders with a power output of 870 hp to 1,400 hp.

Applications

Specifications (A.74)

General characteristics

  • Type: 14-cylinder air-cooled radial
  • Bore: 140 mm (5.512 in)
  • Stroke: 145 mm (5.709 in)
  • Displacement: 31.25 litres (1,906.9 cu in)
  • Length: 1,044mm (41.13 in)
  • Width: 653mm (25.71 in)
  • Height: 1,195 mm (47.05 in)
  • Dry weight: 565 kg (1,246 lb)

Components

  • Valvetrain: One intake and one sodium-cooled exhaust valve per cylinder
  • Fuel system: 1 Stromberg carburettor
  • Fuel type: 87 octane
  • Cooling system: air-cooled

Performance

See also

Comparable engines

Related lists

References

Wikimedia Commons has media related to Fiat A.74.
  1. ^ A.74 engine manual
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