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Pratt & Whitney JT12: Wikis


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A Pratt & Whitney JT12A turbojet
Type Turbojet
Manufacturer Pratt & Whitney
First run 1957
Major applications North American Sabreliner
T-2 Buckeye
Variants Pratt & Whitney T73

The Pratt & Whitney JT12 and J60 are small turbojets. The JFTD-12 (military designation T73) is a related turboshaft engine.[1] Turboshaft versions for naval use are known as the FT12.



The J60 conception and project design began in July 1957 at United Aircraft of Canada, Montreal (now Pratt & Whitney Canada). The project design details were transferred to the main P&W company in East Hartford. In Mqy 1958, the first prototype, with military designation YJ60-P-1, was decided jointly with the USAF and US Navy.

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 verson, JT12A-21, had an afterburner which delivered a maximum thrust of 17.91 kN (4,025 lb st).


Data from Janes[2]
  • 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



Civilian (JT12)

Military (J60)


General characteristics

  • Type: Turbojet
  • Length:
  • Diameter:
  • Dry weight:


  • Compressor:


See also

Related development

Comparable engines

Related lists


External links


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