| Business aircraft pioneered the quieter and more fuel-efficient turbofan engines now used also on nearly all commercial aircraft. All new business jets meet the most stringent Federal Aviation Administration noise level category, and many older models are being retrofitted with newer engines.
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[25k JPG, 43k JPG]
PRATT & WHITNEY CANADA JT15D
A first-generation turbofan, the JT15D improved the performance of small business aircraft and significantly reduced their noise. Pratt & Whitney Canada began designing it in 1966 at the request of Cessna, which was developing a new entry-level business jet--the Citation. Simplicity and low cost were key objectives. The engine was used on several Cessna Citation models, the Aerospatiale Corvette, Mitsubishi Diamond 1/1A, and Beechjet 400A business aircraft.
This engine was one of two that powered the prototype Cessna Citation on its first flight in 1969. It was used mainly during the Citation flight test program.
Gift of Pratt & Whitney Canada, United Technologies
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SPECIFICATIONS
- Type: Two-shaft turbofan. 1-stage fan, 1-stage high pressure centrifugal compressor, annular reverse flow combustor, 1-stage high pressure turbine, 2-stage low pressure turbine.
- Take-off power rating: 9.8 kN (2,200 lb)
- Bypass ratio: 3.3:1
- Weight (dry): 232.5 kg (514 lb)
- Specific fuel consumption (take-off): 15.3 mg/Ns (0.540 lb/h/lb)
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[25k JPG, 43k JPG]
ALLIEDSIGNAL TFE731
The AlliedSignal TFE731 was largely responsible for the broad-scale introduction of medium-size corporate fanjet aircraft, a trend that began in the early 1970s. The engine's low specific fuel consumption greatly increased the range of corporate jet aircraft. The TFE731 is used on many types of business jets, including Bombardier Learjets, Dassault Falcons, Cessna Citations, Raytheon Hawker 800s, and Israel Aircraft Industries 1125 Astras.
As one of the first development engines for the TFE731-3 engine series, this engine has been rebuilt nearly 200 times for various development and certification testing programs. It has undergone more than 2,000 hours of hard testing in the manufacturer's test cell facilities in Phoenix, Arizona, and on a Falcon 20 jet aircraft. This testing resulted in many improvements to the TFE731 series, including the development of a low-smoke combustion system and enhanced engine controls.
Gift of AlliedSignal Engines |
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SPECIFICATIONS
- Type: Two-shaft geared turbofan. 1-stage fan, 4-stage low pressure axial compressor, 1-stage high pressure centrifugal compressor, annular reverse flow combustor, 1-stage high pressure turbine, 3-stage low pressure turbine.
- Take-off power rating (sea level): 16.46 kN (3,700 lb)
- Bypass ratio: 2.80:1
- Weight (dry): 342 kg (754 lb)
- Specific fuel consumption (cruise): 23.65 mg/Ns (0.835 lb/h/lb)
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