T55 | |
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Honeywell's T55-GA-714A turboshaft engine on a CH-47 Chinook | |
Type | Turboshaft |
National origin | United States |
Manufacturer | Lycoming Engines Honeywell Aerospace |
First run | April 1955 |
Major applications | CH-47 Chinook Bell 309 Piper PA-48 Enforcer |
Number built | 6,000+ |
Developed from | Lycoming T53 |
Developed into | Lycoming/Vericor TF40 |
The Honeywell T55 (formerly Lycoming; company designation LTC-4) is a turboshaft engine used on American helicopters and fixed-wing aircraft (inturboprop form) since the 1950s, and in unlimited hydroplanes since the 1980s. Today, there have been more than 6,000 of these engines built.[1] It is produced by Honeywell Aerospace, a division of Honeywell based in Phoenix, Arizona, and was originally designed by the Turbine Engine Division of Lycoming EnginesinStratford, Connecticut, as a scaled-up version of the smaller Lycoming T53. The T55 serves as the engine on several major applications including the CH-47-Chinook, the Bell 309, and the Piper PA-48 Enforcer. The T55 also serves as the core of the Lycoming ALF 502 turbofan. Since the T55 was first developed, progressive increases in airflow, overall pressure ratio, and turbine inlet temperature have more than tripled the power output of the engine.[2][3][4]
Related development
Comparable engines
Related lists
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Opposed piston engines |
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Radial engines and H engines |
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Aircraft diesel engines |
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Turbofans |
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Turboprops/Turboshafts |
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Aero-derivative marine gas turbines |
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Joint development | Avco (Lycoming)/Pratt & Whitney: T800-APW (Turboshaft) |
See also |
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Turboprops/Turboshafts |
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Turbofans |
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Joint development |
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Note: AVCO Lycoming/Textron Lycoming engines marked with * |
United States military gas turbine aircraft engine designation system
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Turbojets |
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Turboprops/ Turboshafts |
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Turbofans |
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Adaptive cycle engines |
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