The Allison J35 was originally developed by the General Electric Company in parallel with the Whittle-based J33 , and was the Air Force's first axial-flow (straight-through airflow) compressor engine.

Operational History

The J35 first flew in the XP-84 in 1946. Late in 1947, complete responsibility for the production of the engine was transferred to the Allison Division of General Motors. More than 14,000 J35s had been built by the time production ended in 1955.

The J35 was used to power the X-5 variable-sweep research aircraft and various prototypes such as the XB-43, XB-45, XB-46, XB-47, XB-48, and XB-49. It is probably best known, however, as the engine used in two of the Air Force's leading fighters of the 1950s, the F-84B/C/D/E/G "Thunderjet" and the F-89 "Scorpion."

Specifications

• Model: J35-A-35A
• Compressor: 11-stage axial
• Turbine: single-stage axial
• Weight: 2,850 lb (1,293 kg) including afterburner
• Thrust: 5,600 lbf (25 kN), 7,400 lbf (33 kN) with afterburner
• Maximum RPM: 8,000
• Maximum operating altitude: 50,000 ft (15,000 m)
• Cost: $46,000

Models

• J35-A-11: 6,000 lbf (27 kN) thrust
• J35-A-15C: 4,000 lbf (18 kN) thrust
• J35-A-17: 4,900 lbf (22 kN)
• J35-A-35: 7,200 lbf (32 kN) afterburning thrust

External links

• Allison J35 Turbojet