Marlène Aviation: The 'Turbine Leduc' was one of the very first turbojets developed in France by René Leduc, who also developed the world's first ramjet aircraft. The turbojet engine, patented in 1934, was ordered by the French government in 1937 as a prototype and ran on a test bench in 1939.

The 'Turbine Leduc' was one of the very first turbojets developed in France by René Leduc, who also developed the world's first ramjet aircraft. The turbojet engine, patented in 1934, was ordered by the French government in 1937 as a prototype and ran on a test bench in 1939.