The Allison J35 Axial-Flow Jet Engine
Like the Allison J33 centrifugal jet engine, the Allison J35 was based on a General Electric Design. It was developed by the General Electric company alongside the Whittle based J33, and was the first Axial-Flow jet engine to be used by the USAF.
USAF Museum
Allison J35 Engine on display at the USAF Museum
The Allison J35 first flew in the Republic XP-84 in 1946, although the first Allison Production units didn’t appear until late 1947.
The J35 was used to power the X-5 variable-sweep research aircraft and numerous prototypes, as listed below:
- Bell X-5
- Douglas XB-43
- North American XB-45 "Tornado"
- Convair XB-46
- Boeing XB-47 "Stratojet"
- Martin XB-48
- Northrop XB-49
It was also used in the USAF's leading fighters of the 1950s:
- Republic F-84 "Thunderjet"
- Northrop F-89 "Scorpion"
- Douglas D-558-I "Skystreak"
USAF Museum
Allison J35 Engine at the USAF Museum.
This was the first American Axial-flow engine.
Allison J35 Specifications
The Allison J35 Models:
- J35-A-11: 6,000lb thrust
- J35-A-15C: 4,000lb thrust
- J35-A-17: 4,900lb
- J35-A-35: 7,200lb afterburning thrust
| Allison J35-A-35 | ||
|---|---|---|
| Country | United States |  |
| Introduction | 1947 | |
| Production end | 1955 | |
| Number built | more then 14,000 | |
| Type | Axial Flow Afterburning Turbojet | |
| Compressor | Eleven-stage axial-flow compressor | |
| Turbine | Single-stage axial turbine | |
| After-burner | Afterburner | |
| Maximum RPM | 8000 | |
| Weight | 1,290 kilograms | 2,850 pounds |
| Thrust | 3,270 kilograms | 7,200 pounds |
| Thrust to weight ratio | 2.6 | |
| Max operating altitude | 15,200 meters | 50,000 feet |
A later development of the Allison J35 was produced as the Allison J71, which produced around 10,000lb thrust, which powered powered the Douglas B-66 "Destroyer" and the McDonnell F3H-2 "Demon".
USAF Museum
Allison J35 Axial Flow turbojet
NASA
