Lycoming T55
| T55 | |
|---|---|
 | |
| 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
- 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
- Bell 309
- Boeing CH-47 Chinook
- Boeing Chinook (UK variants)
- Boeing Model 360
- Boeing RC-135- One T55 was fitted to the RC-135E derivative to provide power to the aircraft's phased array radar.
- Curtiss-Wright X-19
- North American YAT-28E Trojan
- Piper PA-48 Enforcer
- H1 Unlimited hydroplane
Specifications (T55-L-714A)
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
- Compressor: 7-stage axial compressor and 1-stage centrifugal compressor
- Turbine: 2-stage gas producer and 2-stage free power
Performance
- Maximum power output: 4,867 shp (3,631 kW)
- Overall pressure ratio: 9.32[1]
- Turbine inlet temperature: 815 °C (power turbine inlet temperature)
- Power-to-weight ratio: (4,867 shp / 831 lbs) ~ 5.8568:1 shp/lb
See also
- Comparable engines
- Related lists
References
- 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
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Wikimedia Commons has media related to Lycoming T55. |
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