Pratt & Whitney JT12


The Pratt & Whitney JT12, is a small turbojet engine. The Pratt & Whitney T73 is a related turboshaft engine.

Design and development

The J60 conception and project design began in July 1957 at United Aircraft of Canada in Montreal. The project design details were transferred to the main P&W company in East Hartford and in May 1958, the first prototype, with military designation YJ60-P-1 commenced testing.
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. The modified JT12A-3 turbojets with a basic rating of 14.69 kN 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.

Variants

;YJ60-P-1:prototype
;J60-P-3:
;J60-P-3A:
;J60-P-4:
;J60-P-5:
;J60-P-6:
;J60-P-9:
;T73
;JT12A-3LH:
;JT12A-5: Take-off ratings from to.
;JT12A-6:Essentially similar to the -5
;JT12A-6A:
;JT12A-7: up-rated to
;JT12A-8:
;JT12A-8A:
;JT12A-21:An after-burning version developing thrust wet.
;FT12:
;JFTD12

Applications

Civilian (JT12)