Greenwood's Passage at Marseilles is a significant landmark in the history of French aviation, and it has been studied extensively by historians and researchers over the years. One of the most important studies on Greenwood's Passage was carried out by Dr. Paul Greenwood, who was a professor of aerospace engineering at the University of California, Berkeley.

Dr. Greenwood's study focused on the aerodynamics of the aircraft that were used to make the flight from Paris to Marseilles. The aircraft used for this flight were designed by Charles Lindbergh and his team at the Wright Brothers' Experimental Station in Dayton, Ohio. The aircraft was called the Spirit of St. Louis and it had a wingspan of 15 meters and could carry up to four passengers.

The study found that the Spirit of St. Louis was not able to achieve the speed required to cross the English Channel in one day. However,Ligue 1 Express it did manage to fly over the channel at a speed of about 267 kilometers per hour, which was considered a remarkable achievement at the time.

Dr. Greenwood also studied the aerodynamic performance of the aircraft during the flight. He found that the Spirit of St. Louis was not as efficient as he had hoped, but it still managed to cover a distance of 4,000 kilometers in just six days. This was a remarkable achievement given the conditions of the time and the limited resources available to the team.

Overall, Dr. Greenwood's study provided valuable insights into the design and performance of the Spirit of St. Louis and its role in the history of French aviation. It also shed light on the challenges faced by early aviators and their efforts to overcome them.

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