Pratt & Whitney T73
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The Pratt & Whitney T73 (company designation JFTD12) is a turboshaft engine.[1] Based on the JT12A, the T73 powered the Sikorsky CH-54 Tarhe and its civil counterpart Sikorsky S-64 Skycrane flying crane heavy-lift helicopters.[2] Turboshaft versions for naval use are known as the FT12, and have been used on the Iroquois-class destroyer.
Variants
- T73-P-1
- Basic military model, rated at 4,500 horsepower (3,355 kW) takeoff power and 4,000 horsepower (2,982 kW) maximum continuous power[3]
- T73-P-700
- Higher-power military model with improved internal components; rated at 4,800 horsepower (3,579 kW) takeoff power and 4,430 horsepower (3,303 kW) maximum continuous power[3]
- JFTD12A-3
- JFTD12A-4A
- Civilian equivalent of T73-P-1[3]
- JFTD12A-5A
- Civilian equivalent of T73-P-700[3]
- FT12
- Marine powerplant
Applications
- Sikorsky CH-54 Tarhe (T73)
- Sikorsky S-64 Skycrane/Erickson Air-Crane S-64 Skycrane (JTFD12)
- Iroquois-class destroyer (FT12AH-3)
Specifications (T73-P-1)
Data from FAA Type Certificate E15EA
General characteristics
- Type: Turboshaft
- Length: 107.0 in (2,718 mm)
- Diameter: 30.0 in (762 mm) maximum
- Dry weight: 966 lbs (438 kg)
Components
- Compressor: nine stage axial compressor
- Combustors: eight cans in annular configuration
- Turbine: axial two stage gas generator turbine and axial two stage free turbine
- Fuel type: aviation kerosene conforming to MIL-I-5161 E Grade I or II
Performance
- Maximum power output: 4,500 horsepower (3,355 kW) takeoff, 4,000 horsepower (2,982 kW) maximum continuous; at sea level at or below -8°C (17°F)
- Turbine inlet temperature: 688°C (1270°F)
- Power-to-weight ratio: 4.66 hp/lb (7.66 kW/kg)
See also
Related development
Comparable engines
Related lists
References
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- ↑ Greg Goebel's VectorsiteTemplate:Category handler[<span title="Script error: No such module "string".">usurped]Script error: No such module "Check for unknown parameters".
- ↑ Pratt & Whitney JT12 (United States), Aero-engines - Turbojet, Jane's Information Group, 2011.05.09
- ↑ a b c d Type Certificate Data Sheet E15EAScript error: No such module "Unsubst"., US DoT - FAA, 2011.09.12
Script error: No such module "Check for unknown parameters".
- Script error: No such module "citation/CS1".
- EASE Type Certificate IM.E.106Script error: No such module "Unsubst". retrieved 14 February 2014
External links
- Atlantic Canadian Aviation: JT12 for Canadair aircraftScript error: No such module "Unsubst".
Template:Pratt & Whitney aeroengines Template:USAF gas turbine engines
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