| 释义 |
- Variants
- Applications
- Specifications
- See also
- Notes
- References
- External links
| name= ALF 502/LF 507 | image= File:ALF502.JPG | caption= ALF 502 removed from a Bombardier Challenger 600-1A11
}}{{Infobox Aircraft Engine | type= Geared turbofan | national origin = United States | manufacturer= Lycoming Engines
Honeywell Aerospace | first run= 1980 | major applications= Bombardier Challenger 600
British Aerospace 146
Northrop YA-9 | number built = | program cost = | unit cost = | developed from = | variants with their own articles = | developed into =
}} |
The Lycoming ALF 502/LF 507 (now Honeywell) is a geared turbofan engine produced by Lycoming Engines, AlliedSignal, and then Honeywell Aerospace. The original YF102 was developed at the Stratford Army Engine Plant in Connecticut by adding a fan to the Lycoming T55 engine, which was used as the gas generator.[1] Six engines were built for the Northrop YA-9 prototype ground-attack aircraft. These engines were later reused in the C-8A Quiet Short-Haul Research Aircraft (QSRA). The ALF 502 was certified in 1980 and used on the British Aerospace 146 and Bombardier Challenger 600. The derated FADEC-equipped LF 507 was used on the Avro RJ update of the BAe 146. VariantsThe ALF502 is a high bypass turbofan with geared fan, axial-centrifugal flow high pressure compressor, reverse flow annular combustor, two-stage high pressure turbine, two-stage low pressure turbine :[2] - ALF502R-3 (single-stage LP compressor)
- ALF502R-4: R-3 with higher thrust
- ALF502R-5: R-4 with improved first-stage and second-stage turbine nozzle assemblies
- ALF502R-3A: R-3 with gas producer turbine improvements, but operated at higher thrust
- ALF502L (two-stage LP compressor)
- ALF502L-2: L with fan blade modification for increased altitude performance
- ALF502L-3: L-2 with turbine improvements and automatic power reserve features
- ALF502L-2A: L-2 with gas producer turbine improvements and automatic power reserve features
- ALF502L-2C: L-2A without automatic power reserve
- ALF502R-6: L-2C with R-5 accessory gearbox
- LF507-1H: R-6 with lower, flat-rated thrust
- LF507-1F: 507-1H with a single-channel FADEC with hydromechanical backup
Applications- YF102
- Northrop YA-9
- C-8A Quiet Short-Haul Research Aircraft
- ALF 502
- Bombardier Challenger 600: early CL-600 (1A11) series, 81 built from 1978 to 1982
- British Aerospace 146
- LF 507
Specifications Type Certificate Data Sheet[2]| Variant | ALF502R-3 | ALF502R-4/5/3A | ALF502L/L-2/L-3/L-2A/L-2C/R-6 | LF507-1H/1F | | Configuration | High bypass turbofan, geared fan |
|---|
| Fan diameter | {{cvt|40.25|in|mm}}[3] |
|---|
| Gear ratio | 2.3:1[4] |
|---|
| Bypass ratio | 5.7:1 |
|---|
| Compressor | 1 LP, 7-stage axial[3] + centrifugal HP | 2 LP, 7-stage axial[3] + centrifugal HP |
|---|
| Combustor | reverse flow annular |
|---|
| Turbine | two-stage HP, two-stage LP |
|---|
| Takeoff thrust | 6,700|lbf|kN}} | 6,970|lbf|kN}} | 7,500|lbf|kN}} | 7,000|lbf|kN}} |
|---|
| Length | {{cvt|63.66|in|mm}} | {{cvt|65.57|in|mm}} |
|---|
| Height | {{cvt|55.5|in|mm}} | {{cvt|54.5|in|mm}} |
|---|
| Width | {{cvt|47.8|in|mm}} | {{cvt|48.6|in|mm}} |
|---|
| includes essential engine accessories but excludes starter, hydraulic pump, integrated drive generator and exhaust nozzle | {{cvt|1,336|lb|kg}} | {{cvt|1,375|lb|kg}} (1F: {{cvt|1,385|lb|kg}}) |
|---|
| LP RPM | 7,184 - 7,374 |
|---|
| HP RPM | 19,280 - 19,760 |
|---|
| TSFC | {{cvt|0.406|lb/lbf|kg/kN}}/h[3] |
|---|
| Thrust/weight | {{#expr:6700/1336round2}} | {{#expr:6970/1336round2}} | {{#expr:7500/1375round2}} | {{#expr:7000/1375round2}} |
|---|
See also{{Aircontent
|related=- Honeywell HTF7000 (AS907), ALF502/LF507 successor
|similar engines=- GE CF34
- Pratt & Whitney Canada PW300
- Rolls-Royce AE 3007
Geared turbofans- Garrett TFE731
- Pratt & Whitney PW1000G
- Turbomeca Aspin/Astafan
- IAE SuperFan
- Rolls-Royce/SNECMA M45SD
|lists=
}}Notes{{notelist}}References1. ^{{cite book |title=The History of North American Small Gas Turbine Aircraft Engines |last=Leyes |first=Richard A., II |author2=William A. Fleming |year=1999 |publisher=American Institute of Aeronautics and Astronautics |location=Reston, VA |isbn=1-56347-332-1}}
2. ^1 {{cite web |url= http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/3f30606514a3b28086256bea006c249c/$FILE/e6ne.pdf |title= Type Certificate Data Sheet E6NE |date= June 7, 2002 |publisher= FAA}}
3. ^1 2 3 {{cite web | title=ALF 502 Turbofan Engine -Honeywell Aerospace | url=http://www.honeywell.com/sites/portal?smap=aerospace&page=Propulsion_Engines3&theme=T5&catID=CDAB5CA0F-004C-6DBB-B50C-20859E156C16&id=H8D86112E-572B-E3ED-33CB-C2D8ED91628F&sel=1g | archive-url=https://web.archive.org/web/20120305232900/http://www.honeywell.com/sites/portal?smap=aerospace&page=Propulsion_Engines3&theme=T5&catID=CDAB5CA0F-004C-6DBB-B50C-20859E156C16&id=H8D86112E-572B-E3ED-33CB-C2D8ED91628F&sel=1g | dead-url=yes | archive-date=March 5, 2012 | date=November 29, 2010 }}
4. ^{{cite news |url= https://www.flightglobal.com/pdfarchive/view/1993/1993%20-%202096.html |title= Engine for Change |work=Flight International |date= 25 August 1993 |author= Graham Warwick }}
External links{{Commons category|Lycoming ALF 502}}- [https://web.archive.org/web/20080216183330/http://www.honeywell.com/sites/aero/Propulsion_Engines.htm Honeywell propulsion products page]
- [https://web.archive.org/web/20080517224926/http://www.swiss-technical-services.com/tsindex/print/pr-honeywell-alf_502_507-technical-details Technical details from Swiss International Air Lines]
- {{cite web |url= https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19730004744.pdf |title= Design study of an air pump and integral lift engine ALF-504 using the Lycoming 502 core |author= Dale Raunch |publisher= NASA |date= July 1972}}
{{Lycoming aeroengines}}{{Garrett/Honeywell aeroengines}}{{USAF gas turbine engines}} 8 : Geared turbofan engines|High-bypass turbofan engines|Honeywell|Honeywell|Lycoming aircraft engines|Lycoming aircraft engines|Mixed-compressor gas turbines|Turbofan engines 1980–1989 |