Allison_TF41 Knowpia

TF41 Spey
	An Allison TF41-A-1B turbofan
Type	Turbofan
Manufacturer	Allison Engine Company / Rolls-Royce Limited
First run	1967
Major applications	LTV A-7 Corsair II
Number built	1,440
Developed from	Rolls-Royce Spey

The Allison TF41 (Company designations RB.168-62 and Model 912) is a low-bypass turbofan engine.

Design and development edit

The TF41 was jointly developed by Allison Engine Company and Rolls-Royce from the latter's RB.168-25R Spey.^[1] Allison manufactured the TF41 under license, while Rolls-Royce supplied parts common to existing Speys.^[2] The TF41 was developed for use in the LTV A-7D Corsair II for the USAF, and the US Navy's A-7E. Between 1968 and 1983, a total of 1,440 TF41s were delivered.^[3]

Applications edit

A TF41 of a U.S. Navy A-7E-4-CV Corsair II (BuNo 156809).

LTV A-7 Corsair II (USAF -D/-K and US Navy -E models),

Specifications (TF41-A-1) edit

Data from Flight.^[4]^[5]

General characteristics

Type: Turbofan
Length: 114.5 in (2908.3 mm)
Diameter: 40 in (1016 mm)
Dry weight: 3,511 lb (1592.6 kg)

Components

Compressor: Three-stage LP compressor, two-stage IP compressor (both driven by LP turbine),11-stage HP compressor
Combustors: Cannular combustor with ten flame tubes
Turbine: Two-stage LP, Two-stage HP

Performance

Maximum thrust: 14,250 lb (64.5 kN)
Overall pressure ratio: 20:1
Bypass ratio: 0.77:1
Air mass flow: 258 lb/s (117 kg/s)
Thrust-to-weight ratio: 4.06

References edit

^ "alfa romeo | fiat | 1975 | 0025 | Flight Archive". www.flightglobal.com. Archived from the original on 2012-10-26.
^ http://www.flightglobal.com/pdfarchive/view/1968/1968%20-%200018.html TURBOFANS: A Survey of Current Airline Powerplants
^ Gunston, p. 9
^ "Archived copy". Archived from the original on 2012-10-26. Retrieved 2010-06-23.{{cite web}}: CS1 maint: archived copy as title (link)
^ "Military Turbofan Engine Data". Archived from the original on 2018-02-21. Retrieved 2018-01-31.

Connors, Jack (2010). The Engines of Pratt & Whitney: A Technical History. Reston. Virginia: American Institute of Aeronautics and Astronautics. ISBN 978-1-60086-711-8.
Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. p. 9. ISBN 0-7509-4479-X.