Allison T40

T40
TypeTurboprop
National originUnited States
ManufacturerAllison Engine Company
Major applicationsA2D Skyshark
Convair R3Y Tradewind
Convair XFY Pogo
Developed fromAllison T38

The Allison T40, company designation Allison Model 500, was an early American turboprop engine composed of two Allison T38 power sections driving a contra-rotating propeller via a common gearbox.