Power Jets W.1

W.1
The Whittle W.1X at the National Air and Space Museum
Type Turbojet
Manufacturer Power Jets
First run 14 December 1940
Major applications Gloster E.28/39
Developed into General Electric I-A

The Power Jets W.1 (sometimes called the Whittle W.1) was a British turbojet engine designed by Frank Whittle and Power Jets. The W.1 was built under contract by British Thomson-Houston (BTH) in the early 1940s. It is notable for being the first British jet engine to fly, as the "Whittle Supercharger Type W1", powering the Gloster E.28/39 on its maiden flight at RAF Cranwell on 15 May 1941. The W.1 was superseded by the Power Jets W.2.