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Lycoming O-540

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The Lycoming O-540 is a family of six-cylinder, horizontally opposed fixed-wing aircraft and helicopter engines of 541.5 cubic inch (8,874 cc) displacement, made by Lycoming Engines. The engine is a six-cylinder version of the four-cylinder Lycoming O-360.

Design and development

Generally these engines produce 235 to 350 horsepower[1]. They are installed on a large number of different aircraft types.[2] Their main competitive engine is the Continental IO-520 and IO-550 series.

The AEIO version was developed for high-performance competition aerobatics aircraft. Starting at Template:Convert, the power was then improved to Template:Convert. The AEIO-540 family has achieved tremendous results in competition aircraft such as the Extra 300, CAP 232 and Zivko Edge 540.

Variants

All engines have an additional prefix preceding the 540 to indicate the specific configuration of the engine[1]. There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different magnetos.

O-540
Standard, direct-drive, normally-aspirated Opposed engine, equipped with a carburetor.
IO-540
Normally-aspirated engine with fuel Injection.
AEIO-540
Normally-aspirated engine with fuel injection and inverted lubrication for Aerobatic use.
TIO-540
Turbocharged and fuel-injected.
LTIO-540
Left-hand (opposite-direction) rotation, turbocharged, fuel-injected; used as the right-hand engine on Piper PA-31-325 Navajo C/Rs and Piper PA-31-350 Chieftains[3] to prevent critical engine control issues.
IGO-540
Gearbox at the front end of the crankshaft to drive the propeller fewer revolutions per minute than the engine, normally-aspirated with fuel injection.
IGSO-540
Supercharger driven by the engine, gearbox to drive propeller, and fuel injection (up to 435hp).
VO-540
Vertically-mounted engine for use in a helicopter, normally aspirated and equipped with a carburetor.
IVO-540
Normally-aspirated engine with fuel injection, mounted vertically for use in a helicopter.
TVO-540
Turbocharged engine equipped with a carburetor, mounted vertically for use in a helicopter.
TIVO-540
Turbocharged engine with fuel injection, mounted vertically for use in a helicopter.
HIO-540
Helicopter engine mounted horizontally as in fixed-wing aircraft, normally aspirated with fuel injection; not used in any aircraft.[2]

Applications

Specifications (IO-540-K1A5)

Template:Pistonspecs

See also

Related development

Related lists

References

External links

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This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Lycoming O-540".