Lycoming T55

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T55
Lycoming T55-GA-712.jpg
T55-GA-714A turboshaft engine on a CH-47 Chinook
Type Turboshaft
National origin United States
Manufacturer Lycoming Engines
Honeywell Aerospace
First run 1950s
Major applications CH-47 Chinook
Bell 309
Piper PA-48 Enforcer
Number built 4,200+
Developed from Lycoming T53
Developed into Lycoming/Vericor TF40

The Lycoming T55, (Company designation Lycoming LTC-4), is a turboshaft engine used on American helicopters and fixed-wing aircraft (in turboprop form), since the 1950s. It was designed at the Lycoming Turbine Engine Division in Stratford, Connecticut as a scaled-up version of the smaller Lycoming T53. Both engines are now produced by Honeywell Aerospace. The T55 also serves as the core of the Lycoming ALF 502 turbofan.

Variants[edit]

LTC4
LTC4A
LTC4B-8
LTC4B-12
T5508D
Commercial version of the LTC4-8D
AL5512
T55-L-7
T55-L-9
T55-L-11
T55-L-712
T55-L-714
T55-L-714A
T55-GA-714
T55-GA-715
variable vane control : under development.

Applications[edit]

Specifications (T55-L-714A)[edit]

General characteristics

  • Type: Turboshaft
  • Length: 1,196.3 mm (47.1 inches)
  • Diameter: 615.9 mm (24.3 inches)
  • Dry weight: 377kg (831 lbs)

Components

Performance

See also[edit]

Comparable engines
Related lists

References[edit]

  • Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. p. 132. ISBN 0-7509-4479-X. 

External links[edit]