Allison J35

The Allison J35 was originally developed by the General Electric Company in parallel with the Whittle-based centrifugal-flow J33, and was the USAF's first axial-flow (straight-through airflow) compressor engine. The J35 was fairly simple, consisting of an eleven-stage axial-flow compressor and a single-stage turbine. With the afterburner, which most models carried, it produced 7,400 lbf.

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 the General Motors Corporation. Some J35s were built by GM's Chevrolet division. More than 14,000 J35s had been built by the time production ended in 1955.

The J35 was used to power the Bell X-5 variable-sweep research aircraft and various prototypes such as the XB-43 Jetmaster, XB-45 Tornado, Convair XB-46, XB-47 Stratojet, Martin XB-48, and Northrop YB-49. It is probably best known, however, as the engine used in two of the USAF's leading fighters of the 1950s, the F-84 Thunderjet and the F-89 Scorpion.

A larger development of the engine was later produced as the Allison J71, producing around 10,000 lbf.

Variants

• 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

Specifications (J35-A-35A)

External links

• Allison J35 Turbojet