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{|{{Infobox Aircraft Begin
__NOTOC__
| name= GA.70
⚫
The '''[[Agusta]] GA.70''' was a 4-cylinder, air-cooled, horizontally-opposed engine developed in Italy for light aircraft and helicopter use. It was produced in the 1950s and 60s.
| image=File:Hubschraubermuseum Bückeburg 2010 0986.JPG
| caption=GA.70 on display at the [[Hubschraubermuseum Bückeburg]]
}}{{Infobox Aircraft Engine
|type=4-cylinder, air-cooled, horizontally opposed engine
|national origin=[[Italy]]
|manufacturer=[[Agusta]]
|designer=
|first run=1955
|major applications=
|produced=
|number built=
|program cost=
|unit cost=$1010 for the GA.70/O, $1340 for the GA.70/V in 1958 <ref>{{cite journal|title=none|journal=Sport Aviation|date=July 1958}}</ref>
|developed from=
|variants with their own articles=
}}
|}

⚫
The '''Agusta GA.70''' was a four-cylinder, air-cooled, horizontally opposed engine developed in Italy for light aircraft and helicopter use. The GA.70/V featured a bottom sump for vertical applications and was rated at {{convert|82|hp|kW|abbr=on|0|disp=flip}}. It was produced in the 1950s and 1960s.<ref>{{cite journal|title=none|journal=Flight|date=July 1957}}</ref>

==Variants==
;GA.70/0:Horizontal mounting for light aircraft.
;GA.70/V:Vertical mounting for helicopters.


==Applications==
==Applications==
* [[Agusta A.103]]
* [[Agusta A.103]]
* [[de Bernardi Aeroscooter]]
* [[Bölkow Bo 103]]
* [[de Bernardi M.d.B. 02 Aeroscooter]]
* [[Phoenix Minor]]
* [[Phoenix Minor]]
* [[Phoenix Major]]
* [[Phoenix Major]]


==Specifications (GA.70)==
{{pistonspecs|
{{pistonspecs
<!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] -->
|ref=''Jane's All the World's Aircraft 1962-63.''<ref name=JAWA62-63>{{cite book|last=Taylor|first=John W.R. FRHistS. ARAeS|title=Jane's All the World's Aircraft 1962-63|year=1962|publisher=Sampson, Low, Marston & Co Ltd|location=London}}</ref>
<!-- 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=4-cylinder air-cooled [[flat-2|horizontally opposed]] aircraft piston engine
|type=4-cylinder air-cooled [[horizontally opposed]] aircraft piston engine, (G.A.70/V - vertically mounted helicopter engine)
|bore=92 mm (3.6 in)
|bore={{convert|92|mm|in|abbr=on|1}}
|stroke=86.5 mm (3.4 in)
|stroke={{convert|86.5|mm|in|abbr=on|1}}
|displacement= 2.3 L (140 in³)
|displacement={{convert|2.3|L|cuin|abbr=on|1}}
|length={{convert|760|mm|in|abbr=on|1}}, (G.A.70/V - {{convert|470|mm|in|abbr=on|1}})
|length=
|diameter=
|diameter=
|width={{convert|750|mm|in|abbr=on|1}}, (G.A.70/V - {{convert|540|mm|in|abbr=on|1}})
|width=
|height={{convert|450|mm|in|abbr=on|1}}, (G.A.70/V - {{convert|470|mm|in|abbr=on|1}})
|height=
|weight=176 lb (80 kg)
|weight={{convert|80|kg|lb|abbr=on|0}} dry
|valvetrain=pushrod operated overhead valve, 2 x inlet + 2 x exhaust valves per cylinder
|valvetrain=
|supercharger=
|supercharger=
|turbocharger=
|turbocharger=
|fuelsystem=
|fuelsystem=[[Stromberg NAS 3 carburettor]]
|fueltype=
|fueltype=80/87 [[octane]]
|oilsystem=Pressure lubrication with a gear driven pump
|oilsystem=
|coolingsystem=Air-cooled
|coolingsystem=Air-cooled
|power={{convert|72|hp|kW|abbr=on|0|disp=flip}} at 3,100rpm, (G.A.70/V - {{convert|82|hp|kW|abbr=on|0|disp=flip}} at 3,300rpm)
|power=54 kW (72 hp) at 3,100 rpm
|specpower=23.35 kW/L (0.51 hp/cu in), (G.A.70/V - 26.6 kW/L (0.58 hp/cu in))
|specpower=
|compression=
|compression=
|fuelcon=
|fuelcon=
|specfuelcon=
|specfuelcon=
|oilcon=
|oilcon=
|power/weight=0.67 kW/kg (0.41 hp/lb), (G.A.70/V - 0.765 kW/kg (0.465 hp/lb))
|power/weight=

|designer=[[M. Ginnini]]
|reduction_gear=

|general_other=
|components_other=
|performance_other=
}}
}}


==References==
==Notes==
{{Reflist}}
⚫
* Erickson, Jack. ''[http://home.adelphia.net/~aeroengine/ Horizontally-Opposed Piston Aero Engines]''


==References==
{{Commons category}}
{{refbegin}}
*{{cite book|last=Taylor|first=John W.R. FRHistS. ARAeS|title=Jane's All the World's Aircraft 1962-63|year=1962|publisher=Sampson, Low, Marston & Co Ltd|location=London}}
⚫
* Erickson, Jack. ''[https://web.archive.org/web/20091006084718/http://home.comcast.net/~aeroengine/Agusta.html Horizontally-Opposed Piston Aero Engines]''
{{refend}}


{{AgustaWestland aircraft}}
{{airlistbox}}


[[Category:Aircraft piston engines]]
[[Category:1950s aircraft piston engines]]
[[Category:Boxer engines]]
[[Category:Agusta aircraft engines]]

Latest revision as of 11:05, 30 October 2024

GA.70
GA.70 on display at the Hubschraubermuseum Bückeburg
Type 4-cylinder, air-cooled, horizontally opposed engine
National origin Italy
Manufacturer Agusta
First run 1955

The Agusta GA.70 was a four-cylinder, air-cooled, horizontally opposed engine developed in Italy for light aircraft and helicopter use. The GA.70/V featured a bottom sump for vertical applications and was rated at 61 kW (82 hp). It was produced in the 1950s and 1960s.[1]

Variants

[edit]
GA.70/0
Horizontal mounting for light aircraft.
GA.70/V
Vertical mounting for helicopters.

Applications

[edit]

Specifications (GA.70)

[edit]

Data from Jane's All the World's Aircraft 1962-63.[2]

General characteristics

  • Type: 4-cylinder air-cooled horizontally opposed aircraft piston engine, (G.A.70/V - vertically mounted helicopter engine)
  • Bore: 92 mm (3.6 in)
  • Stroke: 86.5 mm (3.4 in)
  • Displacement: 2.3 L (140.4 cu in)
  • Length: 760 mm (29.9 in), (G.A.70/V - 470 mm (18.5 in))
  • Width: 750 mm (29.5 in), (G.A.70/V - 540 mm (21.3 in))
  • Height: 450 mm (17.7 in), (G.A.70/V - 470 mm (18.5 in))
  • Dry weight: 80 kg (176 lb) dry
  • Designer: M. Ginnini

Components

  • Valvetrain: pushrod operated overhead valve, 2 x inlet + 2 x exhaust valves per cylinder
  • Fuel system: Stromberg NAS 3 carburettor
  • Fuel type: 80/87 octane
  • Oil system: Pressure lubrication with a gear driven pump
  • Cooling system: Air-cooled

Performance

  • Power output: 54 kW (72 hp) at 3,100rpm, (G.A.70/V - 61 kW (82 hp) at 3,300rpm)
  • Specific power: 23.35 kW/L (0.51 hp/cu in), (G.A.70/V - 26.6 kW/L (0.58 hp/cu in))
  • Power-to-weight ratio: 0.67 kW/kg (0.41 hp/lb), (G.A.70/V - 0.765 kW/kg (0.465 hp/lb))

Notes

[edit]
  1. ^ Flight. July 1957.{{cite journal}}: CS1 maint: untitled periodical (link)
  2. ^ Taylor, John W.R. FRHistS. ARAeS (1962). Jane's All the World's Aircraft 1962-63. London: Sampson, Low, Marston & Co Ltd.

References

[edit]
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