Astra Clément-Bayard
Astra Clément-Bayard was a French manufacturer of dirigibles. In 1908 the French industrialist Adolphe Clément-Bayard, who had already made a fortune manufacturing cars, motorcycles and bicycles, diversified into the aviation industry. His first project was a lens-shaped airship designed by Louis Capazza, which was never built. He then collaborated with the Société Astra (Société Astra des Constructions Aéronautiques) on the manufacture of a more conventional craft. Astra were responsible for the manufacture of the envelope, and Clement-Bayard took responsibility for the nacelle and engine. After this collaborative effort the company started manufacturing the envelopes as well, at a new factory in La Motte-Breuil built in anticipation of orders from  the French Army, who had  decided to commence airship operations. The Clément-Bayard No.1 airship was offered to the French government but was too expensive so it was bought by Tsar Nicholas II for the Russian army. In 1910 the Clément-Bayard No.2, piloted by Maurice Clément-Bayard, was the first airship to cross the Channel, travelling over  in six hours. The army ordered three. The company was bought by Citroën in 1922. The airship hangar in La Motte-Breuil is still maintained by Clément-Talbot Ltd.

Clément-Bayard dirigibles 
Seven Clément-Bayard airships were completed. N° 1 was  long,  wide,  capacity, powered by 2 Clément-Bayard 115 hp engines. First flew on 28 October 1908. N° 2 was  long,  wide,  capacity, powered by 2 Clément-Bayard 120 hp engines. Top speed 54 km/h. First flew on 1 June 1910. N° 3 Dupuy de Lôme,  long,  wide,  capacity, powered by 2 Clément-Bayard 120 hp engines. First flew on 1 May 1912. N° 4 Adjudant Vincenot,  long, wide,  capacity, powered by 2 Clément-Bayard 120 hp engines. Top speed 49 km/h. First flew in 1911. Adj Vincenot modified,  metres long,  wide,  capacity, powered by 2 Clément-Bayard 120  engines. Top speed 53 km/h. First flew on 13 August 1913. N° 5 livré à la Russie,  long,  wide,  capacity, powered by 2 Clément-Bayard 130 hp engines. First flew on 9 February 1913. Montgolfier, long, 12.2 metres wide,  capacity, powered by 2 Clément-Bayard 90 hp engines. Top speed 60 km/h. First flew on 31 July 1913. See also
 Société Astra (Société Astra des Constructions Aéronautiques)

References

Defunct aircraft manufacturers of France
Manufacturing companies established in 1908
Brass Era vehicles
Airships
French companies established in 1908
Manufacturing companies disestablished in 1922
1922 disestablishments in France