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Lycoming GSO-580

This article is about the 1959-era geared, eight-cylinder aircraft engine series. For the 1997 six-cylinder engine, see Lycoming IO-580.
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GSO-580
Type

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Manufacturer

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Major applications

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The Lycoming GSO-580 is a family of eight-cylinder horizontally opposed, supercharged, carburetor-equipped aircraft engines for both airplanes and helicopters, manufactured by Lycoming Engines in the late 1950s and early 1960s.[1][2]

The family includes the original GSO-580 fixed-wing aircraft engine series, as well as the later SO-580 and VSO-580 helicopter engines. There is no non-supercharged, non-geared version of the engine, which would have been designated O-580 and therefore the base model is the GSO-580.[1][2]

Design and development

The GSO-580 family of engines covers a range from Script error: No such module "convert". to Script error: No such module "convert".. All have a displacement of Script error: No such module "convert". and the cylinders have air-cooled heads. Compared to other horizontally opposed engines of similar displacement this family of engines produces high output power by supercharging and high maximum rpm, at the cost of higher weight.[1][2]

The GSO-580 series was certified under Type Certificate 256, while the SO-580 and VSO-580 series were certified under type certificate 285. Both were manufactured under Production Certificate No. 3.[1][2]

Variants

GSO-580
Eight-cylinder, horizontally opposed, geared-drive, supercharged, Script error: No such module "convert"., Script error: No such module "convert". at 3300 rpm for take-off, Script error: No such module "convert". at 3000 rpm continuous, dry weight Script error: No such module "convert"., Bendix PSH-9BDE carburetor. Minimum fuel grade 91/98 avgas. Designation indicates Geared, Supercharged, Opposed.[1]
GSO-580-B
Eight-cylinder, horizontally opposed, geared-drive, supercharged, Script error: No such module "convert"., Script error: No such module "convert". at 3300 rpm for take-off, Script error: No such module "convert". at 3000 rpm continuous, dry weight Script error: No such module "convert"., Bendix PSH-9BDE carburetor. Minimum fuel grade 100/130 avgas. Designation indicates Geared, Supercharged, Opposed.[1]
GSO-580-C
Eight-cylinder, horizontally opposed, geared-drive, supercharged, Script error: No such module "convert"., Script error: No such module "convert". at 3300 rpm for take-off, Script error: No such module "convert". at 3000 rpm continuous, dry weight Script error: No such module "convert"., Bendix PS-9BDE carburetor. Minimum fuel grade 91/98 avgas. Designation indicates Geared, Supercharged, Opposed.[1]
GSO-580-D
Eight-cylinder, horizontally opposed, geared-drive, supercharged, Script error: No such module "convert"., Script error: No such module "convert". at 3300 rpm for take-off, Script error: No such module "convert". at 3000 rpm continuous, dry weight Script error: No such module "convert"., Bendix PS-9BDE carburetor. Minimum fuel grade 100/130 avgas. Designation indicates Geared, Supercharged, Opposed.[1]
SO-580-A1A
Eight-cylinder, horizontally opposed, geared-drive, supercharged, Script error: No such module "convert"., Script error: No such module "convert". at 3300 rpm for take-off, Script error: No such module "convert". at 3000 rpm continuous, dry weight Script error: No such module "convert"., Bendix PS-9BDE carburetor. Minimum fuel grade 100/130 avgas. Designation indicates Supercharged, Opposed. Designed for horizontal or up to 35 degrees nose-up helicopter installation.[2]
SO-580-A1B
Eight-cylinder, horizontally opposed, geared-drive, supercharged, Script error: No such module "convert"., Script error: No such module "convert". at 3300 rpm for take-off, Script error: No such module "convert". at 3000 rpm continuous, dry weight Script error: No such module "convert"., Bendix PS-9BDE carburetor. Minimum fuel grade 100/130 avgas. Designation indicates Supercharged, Opposed. Designed for horizontal or up to 35 degrees nose-up helicopter installation.[2]
VSO-580-A1A
Eight-cylinder, horizontally opposed, geared-drive, supercharged, Script error: No such module "convert"., Script error: No such module "convert". at 3300 rpm for take-off, Script error: No such module "convert". at 3000 rpm continuous, dry weight Script error: No such module "convert"., Bendix PS-9BDE carburetor. Minimum fuel grade 100/130 avgas. Designation indicates Vertical-mounted, Supercharged, Opposed. Designed for vertical helicopter installation.[2]

Applications

GSO-580
SO-580


Specifications (VSO-580-A1A)

Data from FAA AIRCRAFT ENGINE SPECIFICATION E-285, Revision 2[2]

General characteristics

  • Type: 8-cylinder fuel-injected horizontally opposed, vertically mounted, helicopter engine
  • Bore: Script error: No such module "convert".
  • Stroke: Script error: No such module "convert".
  • Displacement: Script error: No such module "convert".
  • Dry weight: Script error: No such module "convert". dry

Components

  • Supercharger: 7.91:1 drive ratio
  • Fuel system: Bendix PS9BDE carburetor
  • Fuel type: 100/130 avgas minimum
  • Cooling system: air-cooled

Performance

See also

Related lists

References

  1. ^ a b c d e f g h Federal Aviation Administration (April 1959). "AIRCRAFT ENGINE SPECIFICATION, Revision 6". Retrieved 2009-01-04. 
  2. ^ a b c d e f g h Federal Aviation Administration (March 1959). "AIRCRAFT ENGINE SPECIFICATION, Revision 2". Retrieved 2009-01-04. 
  3. ^ Murphy, Daryl (2006). "The Cessnas that got away". Retrieved 2008-12-22. 
  4. ^ Collinge, Ken & Glidden S. Doman (2006). "Doman Helicopters: Unsung Innovations, Part 1". Retrieved 2009-01-04.