What specific date marks the first flight of the Gloster E.28/39 powered by the Whittle W.1?

Answer

May 15, 1941

The pivotal moment demonstrating the practical success of Whittle's turbojet technology occurred in the spring of 1941. The engine, known as the Whittle W.1, provided the necessary thrust for the Gloster E.28/39 aircraft to take to the skies for its inaugural flight. This successful demonstration, which placed Britain months ahead of German counterparts in achieving this feat, is precisely dated to May 15, 1941. This event represented the practical realization of the continuous combustion principle that Whittle had patented nearly eleven years prior.

What specific date marks the first flight of the Gloster E.28/39 powered by the Whittle W.1?
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