Pratt & Whitney J48

J48
A Pratt & Whitney J48
TypeTurbojet
National originUnited Kingdom/United States
ManufacturerPratt & Whitney
Major applications
Number built4,108
Developed fromRolls-Royce RB.44 Tay

The Pratt & Whitney J48 (company designation JT7 Turbo-Wasp) is a turbojet engine developed by Pratt & Whitney as a license-built version of the Rolls-Royce Tay. The Tay/J48 was an enlarged development of the Rolls-Royce Nene (Pratt & Whitney J42).