Another of those strange "I know where that is, now what is it?" backward solutions. Maybe I'd do better at geography quizzes than aeronautica obscura...
"In France, the Dorand Rotorcraft Company built, in 1951-52, an aircraft with an original design, the DH.011. It was equipped with a turbo-jet engine with double flux, the Turbomeca "Aspin I". The slightly compressed air of the second flux (the compression ratio was only 1.18) was directed to nozzles located at the end of the two huge blades. The cabin had four seats; the design cruising speed was 110km/h. Tests, carried out at Issy-les-Moulineaux were not as good as expected so they abandoned the aircraft."
Best I could emulate in Google Earth. Arched hangars are gone and trees are too tall now to see in Street View. Original probably taken nr Boul. Henri Farman looking SW