What was the significant event that occurred on April 12, 1937, for the Power Jets team?

Answer

The first ground test run of the LMS 10 engine

April 12, 1937, is a milestone date in aviation history because it saw the successful ground test run of the LMS 10 engine, also known as the W.I. While this was not a flight test, it provided the vital confirmation that the theoretical design could successfully generate thrust through continuous combustion and the rotation of the turbine. The success of this ground test proved that the system was sound, showcasing the immense power that could be harnessed through this new form of propulsion, despite the inherent dangers involved in early experimental testing.

What was the significant event that occurred on April 12, 1937, for the Power Jets team?
inventorHeightaviationFrank Whittle