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]
[edit] 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).
[edit] Variants
- Data from Janes[3]
- YJ60-P-1—prototype
- 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
[edit] Applications
[edit] Civilian (JT12)
[edit] Military (J60)
[edit] Specifications
General characteristics
- Type: Turbojet
- Length:
- Diameter:
- Dry weight:
Components
Performance
[edit] See also
- Related development
- Comparable engines
- Related lists
[edit] References
[edit] External links
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