Allison TF41
Low-bypass turbofan engine
From Wikipedia, the free encyclopedia
The Allison TF41 (Company designations RB.168-62 and Model 912) is a low-bypass turbofan engine.
| 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 |
Design and development
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
- LTV A-7 Corsair II (USAF -D/-K and US Navy -E models),
Specifications (TF41-A-1)
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
See also
Related development
Comparable engines
Related lists
