Lycoming ALF 502

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ALF 502
ALF502.JPG
ALF 502 removed from a Bombardier Challenger 600-1A11
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
Developed into Honeywell LF 507
The YF102-LD-100 was tested on an AJ Savage in the early 1970s.
Honeywell ALF 502 on a BAe 146

The Lycoming ALF 502 is a geared turbofan engine produced by Lycoming, AlliedSignal and then Honeywell Aerospace.

Development[edit]

The original YF102 was developed at the Lycoming Turbine Engine Division in Stratford, 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 improved, higher-thrust LF 507 was used on the Avro RJ update of the BAe 146.

Variants[edit]

ALF502
ALF502R
ALF502R-3
ALF502R-3A
ALF502R-5
ALF502R-6
ALF502R-7
ALF502L
ALF502L-2
ALF502L-2A
ALF502L-3

Applications[edit]

YF102
ALF 502

Specifications (ALF502-R5)[edit]

Data from "ALF 502 Turbofan Engine -Honeywell Aerospace". November 29, 2010. [dead link]

General characteristics

  • Type: High bypass geared turbofan
  • Length: 63.6 in (162 cm)
  • Diameter: Fan: 40.25 in (102 cm)
  • Dry weight: 1336 lb (606 kg)

Components

  • Compressor: Single stage fan, single stage axial low pressure compressor, 7 stage axial and single stage centrifugal high pressure compressor
  • Combustors: Annular
  • Turbine: Two stage high pressure turbine, two stage low pressure turbine

Performance

See also[edit]

Related development
Comparable engines
Related lists

References[edit]

  1. ^ Leyes 1999
Bibliography

Leyes, Richard A., II; William A. Fleming (1999). The History of North American Small Gas Turbine Aircraft Engines. Reston, VA: American Institute of Aeronautics and Astronautics. ISBN 1-56347-332-1. 

External links[edit]