General Electric J31

J31
General Electric J31 turbojet engine
Type Turbojet
National origin United States
Manufacturer General Electric
First run April 1943
Major applications P-59 Airacomet
Ryan FR Fireball
Number built 241
Developed from General Electric I-A
Developed into General Electric I-40/Allison J33

The General Electric J31 was the first jet engine to be mass-produced in the United States.