Featuring a more powerful Pratt & Whitney R-4360 Wasp Major engine, the B-50 offered improved speed, range, and high-altitude performance. -However, its service life was relatively brief ...

flying Boeing Model 40 aircraft with a single Pratt & Whitney Wasp engine. Today Pratt & Whitney powers more than 250 United aircraft, including the Airbus A320ceo family with V2500® engines and ...