Pratt & Whitney JT12
| JT12/J60 | |
|---|---|
| |
| A Pratt & Whitney JT12A turbojet | |
| Type | Turbojet |
| Manufacturer | Pratt & Whitney |
| First run | 1957 |
| Major applications | North American Sabreliner T-2 Buckeye |
| Number built | 2621[1] |
| Variants | Pratt & Whitney T73 |
The Pratt & Whitney JT12 and J60 are small turbojets. Turboshaft versions for naval use are known as the FT12. The JFTD12 (military designation T73) is a related turboshaft engine.[2]
Design and development
The J60 conception and project design began in July 1957 at United Aircraft of Canada (now Pratt & Whitney Canada) in Montreal. The project design details were transferred to the main P&W company in East Hartford. In May 1958, the first prototype, with military designation YJ60-P-1, was decided jointly with the USAF and US Navy.[clarification needed]
Flight tests were completed in early 1959; followed by the delivery of the new JT12A-5 engines in July 1959. These were for the two Canadair CL-41 prototype trainers with a rating of 12.9 kN (2,900 lb st). The modified JT12A-3 turbojets with a basic rating of 14.69 kN (3,300 lb st) were tested in the two Lockheed XV-4A Hummingbird VTOL research aircraft. The next version, JT12A-21, had an afterburner which delivered a maximum thrust of 17.91 kN (4,025 lb st).
Variants
- Data from Janes[3]
- YJ60-P-1—prototype
- JT12A-3LH
- JT12A-5 --(J60-P-3/5/6) T-O ratings: from 12.9 kN (2,900 lb st) to 13.35 kN (3,000 lb st)
- JT12A-21—17.9 kN (4,025 lb st)
- J60-P-3
- J60-P-6
Applications
Civilian (JT12)
Military (J60)
Specifications
General characteristics
- Type: Turbojet
- Length:
- Diameter:
- Dry weight:
Components
- Compressor:
Performance
- Maximum power output:
See also
Related development
Comparable engines
Related lists
References
- ^ Connors, p.285
- ^ Greg Goebel's Vectorsite
- ^ Janes: JT12
- 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.
External links
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