Lycoming ALF 502
|
Lycoming Honeywell Aerospace |
|
|---|---|
 ALF 502 of a Bombardier Challenger 600-1A11 |
|
| ALF 502 / LF 507 | |
| Production period: | n / A |
| Manufacturer: |
Lycoming Honeywell Aerospace |
| Type: | Geared turbofan |
| Developing country: |
 United States
|
| First run: | 1980 |
| Rotor diameter: | 40.25 in (1,022.4 mm) |
| Bypass ratio: | 5.7: 1 |
The Lycoming ALF 502 / LF 507 is a geared turbofan from the American manufacturers Lycoming , AlliedSignal and later Honeywell Aerospace .
The prototype YF102 was developed by the Stratford Army Engine Plant in Connecticut from the Lycoming T55 , which was used as a gas generator . Six copies of this engine were for the Northrop YA-9 built and later for the Quiet Short-Haul Research Aircraft Program of NASA in machines of the type de Havilland Canada DHC-5 used.
The ALF 502 received its type certification in 1980 and was used in the BAe 146 and the Bombardier Challenger 600 . The LF 507 equipped with FADEC was used in the second model series of the BAe 146, the Avro RJ.
Versions
_Canadair_CL-600-1A11_Challenger_600_taxiing_at_Wagga_Wagga_Airport_(3)_(cropped).jpg)
The ALF 502 is a twin-shaft turbofan engine with a geared turbofan , a combination of axial and centrifugal compressor , a combustion chamber with opposite flow direction and a four-stage turbine with two high and two low pressure stages.
- ALF502R-3 (single-stage low-pressure compressor)
- ALF502R-4: R-3 with increased thrust
- ALF502R-5: R-4 with improved arrangement of the first and second stage turbine guide vanes
- ALF502R-3A: R-3 with improved gas turbine, increased thrust
- ALF502L (two-stage low pressure compressor)
- ALF502L-2: L with modified blades for better performance at greater heights
- ALF502L-3: L-2 with improved turbine and automatic power reserve
- ALF502L-2A: L-2 with improved gas turbine and automatic power reserve
- ALF502L-2C: L-2A without automatic power reserve
- ALF502R-6: L-2C with R-5 gear
- LF507-1H: R-6 with lower thrust
- LF507-1F: 507-1H with FADEC
Applications
- YF102
- ALF 502
- Bombardier Challenger 600 , early CL-600 models, 81 examples built between 1978 and 1982
- BAe 146
- LF 507
Technical specifications
| version | ALF502R-3 | ALF502R-4/5 / 3A | ALF502L / L-2 / L-3 / L-2A / L-2C / R-6 | LF507-1H / 1F | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Turbofan engine with turbofan | |||||||||||
| Rotor diameter | 40.25 in (1,022 mm ) | |||||||||||
| Gear ratio | 2.3: 1 | |||||||||||
| Bypass ratio | 5.7: 1 | |||||||||||
| Combustion chamber | opposite flow direction | |||||||||||
| turbine | two high and two low pressure stages each | |||||||||||
| Start thrust | 6,700 lbf (30 kN ) | 6,970 lbf (31 kN) | 7,500 lbf (33 kN) | 7,000 lbf (31 kN) | ||||||||
| length | 63.66 in (1,617 mm) | 65.57 in (1,665 mm) | ||||||||||
| height | 55.5 in (1,410 mm) | 54.5 in (1,384 mm) | ||||||||||
| width | 47.8 in (1,214 mm) | 48.6 in (1,234 mm) | ||||||||||
| Dimensions | 1,336 lb (606 kg) | 1,375 lb (624 kg) (1F: 1,385 lb (628 kg)) | ||||||||||
| Speed low pressure stages | 7,184 - 7,374 | |||||||||||
| Speed high pressure stages | 19,280-19,760 | |||||||||||
| Specific fuel consumption | 0.406 lb / lbf / h (41.4 kg / kN / h) | |||||||||||
| Thrust-to-weight ratio | 5.01 | 5.22 | 5.45 | 5.09 | ||||||||
Web links
Individual evidence
- ^ Richard A. Leyes II, William A. Fleming: The History of North American Small Gas Turbine Aircraft Engines . American Institute of Aeronautics and Astronautics, Reston, Virginia 1999, ISBN 1-56347-332-1 (English).
- ↑ a b Type Certificate Data Sheet E6NE. Federal Aviation Administration , July 7, 2002, accessed February 29, 2020 .
- ↑ a b ALF 502 Turbofan Engine - Honeywell Aerospace . November 29, 2010.
- ^ Graham Warwick: Engine for Change . In: Flight International , August 25, 1993.
