Coanda : double-seat motorised (turbo-propulseur) sled

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The additional turbo-propulseur patent application 13.502, dated 3 December 1910, was implemented on a double-seat motorised sled commissioned by Cyril Vladimirovich, Grand Duke of Russia.With the help of Despujols, a boat maker, and the motor manufacturer Gregoire, Coandă supervised the building of a motor sled, powered by a 30 hp (22 kW) Gregoire engine driving the turbo-propulseur. The sled was blessed by Russian Orthodox priests at the Despujols plant near Paris on 2 December 1910. Starting the next day, it was exhibited for two weeks at the 12th Automobile Salon of France, alongside Gregoire-powered automobiles on the Gregoire stand. A number of automobile and general interest magazines published photographs or sketches of the sled. This was the second time in the autumn of 1910 that a version of Coandă's turbo-propulseur design was shown at the Grand Palais of Paris. One of the periodicals reported an expected speed of 60 mph (97 km/h), but no account exists of the sled being tested. ( source wikipedia )